Class: NumRu::NetCDFVar

Inherits:
Object
  • Object
show all
Defined in:
lib/numru/netcdf.rb,
lib/numru/netcdf_miss.rb,
ext/numru/netcdfraw.c

Constant Summary collapse

@@unpack_type = 
nil

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.new(file, varname, mode = "r", share = false) ⇒ Object Also known as: open 



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# File 'lib/numru/netcdf.rb', line 277

def new(file,varname,mode="r",share=false)
  if(file.is_a?(String))
    file = NetCDF.open(file,mode,share)
  elsif(!file.is_a?(NetCDF))
    raise TypeError, "1st arg must be a NetCDF (file object) or a String (path)"
  end
  file.var(varname)
end

.unpack_type ⇒ Object 



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# File 'lib/numru/netcdf.rb', line 383

def unpack_type
  @@unpack_type
end

.unpack_type=(na_type) ⇒ Object 



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# File 'lib/numru/netcdf.rb', line 386

def unpack_type=(na_type)
  if [NArray::BYTE, NArray::SINT, NArray::INT,
      NArray::SFLOAT, NArray::FLOAT, nil].include?(na_type)
    @@unpack_type = na_type
  else
    raise ArgumentError, "Arg must be one of NArray::BYTE, NArray::SINT, NArray::INT, NArray::SFLOAT, NArray::FLOAT"
  end
end

Instance Method Details

#==(Varb) ⇒ Object 



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# File 'ext/numru/netcdfraw.c', line 1990

VALUE
NetCDF_var_eql(VALUE Vara,VALUE Varb)
{
  struct NetCDFVar *Netcdf_vara;
  struct NetCDFVar *Netcdf_varb;

  if( rb_obj_is_kind_of(Varb, cNetCDFVar) ){
      Data_Get_Struct(Vara,struct NetCDFVar,Netcdf_vara);
      Data_Get_Struct(Varb,struct NetCDFVar,Netcdf_varb);

      if(Netcdf_vara->ncid == Netcdf_varb->ncid &&
	 Netcdf_vara->varid == Netcdf_varb->varid){
	  return Qtrue;
      } else {
	  return Qfalse;
      }
  } else {
      return Qfalse;
  }
}

#[](*a) ⇒ Object 



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# File 'lib/numru/netcdf.rb', line 635

def [](*a)
  if a.length == 0
    return self.get
  end
  a = __rubber_expansion(a)
  first = Array.new
  last = Array.new
  stride = Array.new
  set_stride = false
  a.each{|i|
    if(i.is_a?(Integer))
      first.push(i)
      last.push(i)
      stride.push(1)
    elsif(i.is_a?(Range))
      first.push(i.first)
      last.push(i.exclude_end? ? i.last-1 : i.last)
      stride.push(1)
    elsif(i.is_a?(Hash))
      r = (i.to_a[0])[0]
      s = (i.to_a[0])[1]
      if ( !( r.is_a?(Range) ) || ! ( s.is_a?(Integer) ) )
        raise TypeError, "Hash argument must be {a_Range, step}"
      end
      first.push(r.first)
      last.push(r.exclude_end? ? r.last-1 : r.last)
      stride.push(s)
      set_stride = true
    elsif(i.is_a?(TrueClass))
      first.push(0)
      last.push(-1)
      stride.push(1)
    elsif( i.is_a?(Array) || i.is_a?(NArray))
      a_new = a.dup
      at = a.index(i)
      i = NArray.to_na(i) if i.is_a?(Array)
      for n in 0..i.length-1
        a_new[at] = i[n]..i[n]
        na_tmp = self[*a_new]
        if n==0 then
          k = at
          if at > 0
            a[0..at-1].each{|x| if x.is_a?(Integer) then k -= 1 end}
          end
          shape_tmp = na_tmp.shape
          shape_tmp[k] = i.length
          na = na_tmp.class.new(na_tmp.typecode,*shape_tmp)
          index_tmp = Array.new(shape_tmp.length,true)
        end
        index_tmp[k] = n..n
        na[*index_tmp] = na_tmp
      end
      return na
    else
      raise TypeError, "argument must be Integer, Range, Hash, TrueClass, Array, or NArray"
    end
  }

  if(set_stride)
    na = self.get({"start"=>first, "end"=>last, "stride"=>stride})
  else
    na = self.get({"start"=>first, "end"=>last})
  end
  shape = na.shape
  (a.length-1).downto(0){ |i|
    shape.delete_at(i) if a[i].is_a?(Integer)
  }
  na.reshape!( *shape )
  na
end

#[]=(*a) ⇒ Object 



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# File 'lib/numru/netcdf.rb', line 706

def []=(*a)
  val = a.pop
  a = __rubber_expansion(a)
  first = Array.new
  last = Array.new
  stride = Array.new
  set_stride = false
  a.each{|i|
    if(i.is_a?(Integer))
      first.push(i)
      last.push(i)
      stride.push(1)
    elsif(i.is_a?(Range))
      first.push(i.first)
      last.push(i.exclude_end? ? i.last-1 : i.last)
      stride.push(1)
    elsif(i.is_a?(Hash))
      r = (i.to_a[0])[0]
      s = (i.to_a[0])[1]
      if ( !( r.is_a?(Range) ) || ! ( s.is_a?(Integer) ) )
        raise ArgumentError, "Hash argument must be {first..last, step}"
      end
      first.push(r.first)
      last.push(r.exclude_end? ? r.last-1 : r.last)
      stride.push(s)
      set_stride = true
    elsif(i.is_a?(TrueClass))
      first.push(0)
      last.push(-1)
      stride.push(1)
    elsif(i.is_a?(Array) || i.is_a?(NArray))
      a_new = a.dup
      at = a.index(i)
      i = NArray.to_na(i) if i.is_a?(Array)
      val = NArray.to_na(val) if val.is_a?(Array)
      rank_of_subset = a.dup.delete_if{|v| v.is_a?(Integer)}.length
      if val.rank != rank_of_subset
        raise "rank of the rhs (#{val.rank}) is not equal to the rank "+
              "of the subset specified by #{a.inspect} (#{rank_of_subset})"
      end
      k = at
      a[0..at-1].each{|x| if x.is_a?(Integer) then k -= 1 end}
      if i.length != val.shape[k]
        raise "length of the #{k+1}-th dim of rhs is incorrect "+
              "(#{i.length} for #{val.shape[k]})"
      end
      index_tmp = Array.new(val.rank,true) if !val.is_a?(Numeric) #==>Array-like
      for n in 0..i.length-1
        a_new[at] = i[n]..i[n]
        if !val.is_a?(Numeric) then
          index_tmp[k] = n..n
          self[*a_new] = val[*index_tmp]
        else
          self[*a_new] = val
        end
      end
      return self
    else
      raise TypeError, "argument must be Integer, Range, Hash, TrueClass, Array, or NArray"
    end
  }

  if(set_stride)
    self.put(val, {"start"=>first, "end"=>last, "stride"=>stride})
  else
    self.put(val, {"start"=>first, "end"=>last})
  end
end

#att(att_name) ⇒ Object 



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# File 'ext/numru/netcdfraw.c', line 1932

VALUE
NetCDF_var_att(VALUE Var,VALUE att_name)
{
  int ncid;
  int status;
  int varid;
  char *c_att_name;
  int c_attnump;
  struct NetCDFVar *Netcdf_var;
  struct NetCDFAtt *Netcdf_att;
  VALUE Att;

  Data_Get_Struct(Var,struct NetCDFVar,Netcdf_var);

  ncid=Netcdf_var->ncid;
  varid=Netcdf_var->varid;

  Check_Type(att_name,T_STRING);
  c_att_name=StringValueCStr(att_name);

  status = nc_inq_attid(ncid,varid,c_att_name,&c_attnump);
  if(status == NC_NOERR){
    Netcdf_att=NetCDF_att_init(ncid,varid,c_att_name);
    Att=Data_Wrap_Struct(cNetCDFAtt,0,Netcdf_att_free,Netcdf_att);
    return Att;
  }
  else if(status == NC_ENOTATT){
    return Qnil;
  }
  else{
    NC_RAISE(status);
    return Qnil;
  }
}

#att_names ⇒ Object 



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# File 'lib/numru/netcdf.rb', line 305

def att_names
  num_att=natts()
  names=[]
  for attnum in 0..num_att-1
    obj_Att=id2att(attnum)
    names=names+[obj_Att.name]
  end
  return names
end

#clone ⇒ Object 



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# File 'ext/numru/netcdfraw.c', line 550

VALUE
NetCDF_var_clone(VALUE var)
{
    VALUE clone;
    struct NetCDFVar *nv1, *nv2;

    Data_Get_Struct(var, struct NetCDFVar, nv1);
    nv2 = NetCDF_var_init(nv1->ncid, nv1->varid, nv1->file);
    clone = Data_Wrap_Struct(cNetCDFVar, nc_mark_obj, NetCDF_var_free, nv2);
    CLONESETUP(clone, var);
    return clone;
}

#deflate(*args) ⇒ Object

USAGE

NetCDFVar#deflate(deflate_level, shuffle=false)



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# File 'ext/numru/netcdfraw.c', line 1385

VALUE
NetCDF_var_deflate(int argc, VALUE *argv, VALUE Var)
{
  int ncid, varid, status;
  struct NetCDFVar *Netcdf_var;

  int shuffle;
    /* If non-zero, turn on the shuffle filter.

       http://www.unidata.ucar.edu/software/netcdf/papers/AMS_2008.pdf :
       The shuffle algorithm changes the byte order in the data stream;
       when used with integers that are all close together, this
       results in a better compression ratio. There is no benefit
       from using the shuffle filter without also using
       compression.

       MEMO by horinouchi: shuffling filter was also effective for float
       variables in some test (demo5-netcdf4.rb).
     */
  int deflate_level;
  int deflate=1;
        /* Always set to non-zero:
           See https://www.unidata.ucar.edu/software/netcdf/docs/netcdf-c/nc_005fdef_005fvar_005fdeflate.html#nc_005fdef_005fvar_005fdeflate
           If non-zero, turn on the deflate filter at the
           level specified by the deflate_level parameter.
         */

  if (argc>2 || argc<1) rb_raise(rb_eArgError,
		         "wrong # of arguments (%d). It must be 1 or 2", argc);

  Data_Get_Struct(Var,struct NetCDFVar,Netcdf_var);
  ncid = Netcdf_var->ncid;
  varid = Netcdf_var->varid;

  deflate_level = NUM2INT(argv[0]);

  if (argc==1) {
      shuffle = 0;  /* default: false */
  } else {
      if ( argv[1] == Qnil || argv[1] == Qfalse ) {
	  shuffle = 0;
      } else {
	  shuffle = 1;
      }
  }

  status = nc_def_var_deflate(ncid, varid, shuffle, deflate, deflate_level);
  if(status != NC_NOERR) NC_RAISE(status);

  return(Var);
}

#deflate_params ⇒ Object 



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# File 'ext/numru/netcdfraw.c', line 1437

VALUE
NetCDF_var_deflate_params(VALUE Var)
{
  int ncid, varid, status;
  struct NetCDFVar *Netcdf_var;
  int shufflep, deflatep, deflate_levelp;
  VALUE sh, df, params;

  Data_Get_Struct(Var,struct NetCDFVar,Netcdf_var);
  ncid = Netcdf_var->ncid;
  varid = Netcdf_var->varid;
  status = nc_inq_var_deflate(ncid, varid, &shufflep, &deflatep,
			      &deflate_levelp);
  if(status != NC_NOERR) NC_RAISE(status);
  if (shufflep==0) {sh=Qfalse;} else {sh=Qtrue;}
  if (deflatep==0) {df=Qfalse;} else {df=Qtrue;}
  params = rb_ary_new3(3, sh, df, INT2NUM(deflate_levelp) );
  return(params);
}

#dim(ith) ⇒ Object 



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# File 'ext/numru/netcdfraw.c', line 1542

VALUE
NetCDF_var_dim(VALUE Var, VALUE ith)
{
  int ncid, *dimids, ndims, varid, status, c_ith;
  struct NetCDFVar *Netcdf_var;
  struct NetCDFDim *Netcdf_dim;
  VALUE Dim;

  Check_Type(ith,T_FIXNUM);
  c_ith=NUM2INT(ith);
  Data_Get_Struct(Var,struct NetCDFVar,Netcdf_var);
  ncid = Netcdf_var->ncid;
  varid = Netcdf_var->varid;
  status = nc_inq_varndims(ncid,varid,&ndims);
  if(status != NC_NOERR) NC_RAISE(status);
  if(c_ith < 0 || c_ith >= ndims) {
      rb_raise(rb_eNetcdfError, "dimension count less than zero or greater than ndims-1");
  }
  dimids=ALLOCA_N(int,ndims);
  status = nc_inq_vardimid(ncid,varid,dimids);
  if(status != NC_NOERR) NC_RAISE(status);
  Netcdf_dim = NetCDF_dim_init(ncid,dimids[ndims-1-c_ith]);
  Dim = Data_Wrap_Struct(cNetCDFDim,0,NetCDF_dim_free,Netcdf_dim);
  return(Dim);
}

#dim_names ⇒ Object 



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# File 'lib/numru/netcdf.rb', line 299

def dim_names
  ary = Array.new()
  dims.each{|dim| ary.push(dim.name)}
  ary
end

#dims ⇒ Object 



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# File 'ext/numru/netcdfraw.c', line 1517

VALUE
NetCDF_var_dims(VALUE Var)
{
  int ncid, *dimids, ndims, varid, i, status;
  struct NetCDFVar *Netcdf_var;
  struct NetCDFDim *Netcdf_dim;
  VALUE Dims;

  Data_Get_Struct(Var,struct NetCDFVar,Netcdf_var);
  ncid = Netcdf_var->ncid;
  varid = Netcdf_var->varid;
  status = nc_inq_varndims(ncid,varid,&ndims);
  if(status != NC_NOERR) NC_RAISE(status);
  dimids=ALLOCA_N(int,ndims);
  status = nc_inq_vardimid(ncid,varid,dimids);
  if(status != NC_NOERR) NC_RAISE(status);
  Dims = rb_ary_new();
  for(i=0;i<ndims;i++){
      Netcdf_dim = NetCDF_dim_init(ncid,dimids[ndims-1-i]);
      rb_ary_push(Dims,
		  Data_Wrap_Struct(cNetCDFDim,0,NetCDF_dim_free,Netcdf_dim));
  }
  return(Dims);
}

#each_att ⇒ Object 



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# File 'lib/numru/netcdf.rb', line 291

def each_att
  num_att=natts()
  for attnum in 0..num_att-1
    obj_Att=id2att(attnum)
    yield(obj_Att)
  end
end

#endian ⇒ Object 



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# File 'ext/numru/netcdfraw.c', line 1471

VALUE
NetCDF_var_endian(VALUE Var)
{
  int ncid, varid, status;
  struct NetCDFVar *Netcdf_var;
  int endian;

  Data_Get_Struct(Var,struct NetCDFVar,Netcdf_var);
  ncid = Netcdf_var->ncid;
  varid = Netcdf_var->varid;
  status = nc_inq_var_endian(ncid, varid, &endian);
  if(status != NC_NOERR) NC_RAISE(status);
  return(INT2FIX(endian));
}

#endian=(endian) ⇒ Object 



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# File 'ext/numru/netcdfraw.c', line 1457

VALUE
NetCDF_var_set_endian(VALUE Var, VALUE endian)
{
  int ncid, varid, status;
  struct NetCDFVar *Netcdf_var;

  Data_Get_Struct(Var,struct NetCDFVar,Netcdf_var);
  ncid = Netcdf_var->ncid;
  varid = Netcdf_var->varid;
  status = nc_def_var_endian(ncid, varid, NUM2INT(endian));
  if(status != NC_NOERR) NC_RAISE(status);
  return(Var);
}

#file ⇒ Object 



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# File 'ext/numru/netcdfraw.c', line 1900

VALUE
NetCDF_var_file(VALUE Var)
{
  struct NetCDFVar *Netcdf_var;
  /* VALUE file; */
  Data_Get_Struct(Var,struct NetCDFVar,Netcdf_var);

  return (Netcdf_var->file);
}

#get_var1_byte(start) ⇒ Object 



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# File 'ext/numru/netcdfraw.c', line 2379

VALUE
NetCDF_get_var1_byte(VALUE Var,VALUE start)
{
  int ncid;
  int varid;
  int status;
  unsigned char *ptr;
  int i;
  struct NetCDFVar *Netcdf_var;
  na_shape_t l_start;
  size_t *c_start;
  int ndims;
  int dimids[NC_MAX_DIMS];
  size_t dimlen;
  na_shape_t *c_count;
  VALUE NArray;


  Data_Get_Struct(Var,struct NetCDFVar,Netcdf_var);
  ncid = Netcdf_var->ncid;
  varid = Netcdf_var->varid;
  status = nc_inq_varndims(ncid, varid, &ndims);
  if(status != NC_NOERR)NC_RAISE(status);
  if(ndims == 0) {
    rb_raise(rb_eNetcdfError,"Cannot specify a subset of a rank-0 scalar\n");
  }

  Check_Type(start,T_ARRAY);
  if(RARRAY_LEN(start) < ndims) {
    rb_raise(rb_eNetcdfError,"Length of 'start' is too short\n");
  }

  c_start=ALLOCA_N(size_t,ndims);
  c_count=ALLOCA_N(na_shape_t,ndims);
  for(i=0;i<ndims;i++){
    l_start = NUM2INT(RARRAY_PTR(start)[ndims-1-i]);
    status = nc_inq_vardimid(ncid,varid,dimids);
    if(status != NC_NOERR) NC_RAISE(status);
    if(l_start < 0) {
      status = nc_inq_dimlen(ncid,dimids[i],&dimlen);
      if(status != NC_NOERR) NC_RAISE(status);
      l_start += dimlen;
    }
    c_start[i]=l_start;

    c_count[i]=1;
  }




  Cbyte_to_NArray(NArray,ndims,c_count,ptr);
  status = nc_get_var1_uchar(ncid,varid,c_start,ptr);
  if(status != NC_NOERR) NC_RAISE(status);

  OBJ_TAINT(NArray);
  return NArray;

}

#get_var1_char(start) ⇒ Object 



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# File 'ext/numru/netcdfraw.c', line 2319

VALUE
NetCDF_get_var1_char(VALUE Var,VALUE start)
{
  int ncid;
  int varid;
  int status;
  unsigned char *ptr;
  int i;
  struct NetCDFVar *Netcdf_var;
  na_shape_t l_start;
  size_t *c_start;
  int ndims;
  int dimids[NC_MAX_DIMS];
  size_t dimlen;
  na_shape_t *c_count;
  VALUE NArray;


  Data_Get_Struct(Var,struct NetCDFVar,Netcdf_var);
  ncid = Netcdf_var->ncid;
  varid = Netcdf_var->varid;
  status = nc_inq_varndims(ncid, varid, &ndims);
  if(status != NC_NOERR)NC_RAISE(status);
  if(ndims == 0) {
    rb_raise(rb_eNetcdfError,"Cannot specify a subset of a rank-0 scalar\n");
  }

  Check_Type(start,T_ARRAY);
  if(RARRAY_LEN(start) < ndims) {
    rb_raise(rb_eNetcdfError,"Length of 'start' is too short\n");
  }

  c_start=ALLOCA_N(size_t,ndims);
  c_count=ALLOCA_N(na_shape_t,ndims);
  for(i=0;i<ndims;i++){
    l_start = NUM2INT(RARRAY_PTR(start)[ndims-1-i]);
    status = nc_inq_vardimid(ncid,varid,dimids);
    if(status != NC_NOERR) NC_RAISE(status);
    if(l_start < 0) {
      status = nc_inq_dimlen(ncid,dimids[i],&dimlen);
      if(status != NC_NOERR) NC_RAISE(status);
      l_start += dimlen;
    }
    c_start[i]=l_start;

    c_count[i]=1;
  }




  Cbyte_to_NArray(NArray,ndims,c_count,ptr);
  status = nc_get_var1_text(ncid,varid,c_start,(char *)ptr);
  if(status != NC_NOERR) NC_RAISE(status);

  OBJ_TAINT(NArray);
  return NArray;

}

#get_var1_float(start) ⇒ Object 



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# File 'ext/numru/netcdfraw.c', line 2607

VALUE
NetCDF_get_var1_double(VALUE Var,VALUE start)
{
  int ncid;
  int varid;
  int status;
  double *ptr;
  int i;
  struct NetCDFVar *Netcdf_var;
  na_shape_t l_start;
  size_t *c_start;
  int ndims;
  int dimids[NC_MAX_DIMS];
  size_t dimlen;
  na_shape_t *c_count;
  VALUE NArray;

  Data_Get_Struct(Var,struct NetCDFVar,Netcdf_var);
  ncid = Netcdf_var->ncid;
  varid = Netcdf_var->varid;
  status = nc_inq_varndims(ncid, varid, &ndims);
  if(status != NC_NOERR)NC_RAISE(status);
  if(ndims == 0) {
    rb_raise(rb_eNetcdfError,"Cannot specify a subset of a rank-0 scalar\n");
  }

  Check_Type(start,T_ARRAY);
  if(RARRAY_LEN(start) < ndims) {
    rb_raise(rb_eNetcdfError,"Length of 'start' is too short\n");
  }

  c_start=ALLOCA_N(size_t,ndims);
  c_count=ALLOCA_N(na_shape_t,ndims);
  for(i=0;i<ndims;i++){
    l_start = NUM2INT(RARRAY_PTR(start)[ndims-1-i]);
    status = nc_inq_vardimid(ncid,varid,dimids);
    if(status !=NC_NOERR) NC_RAISE(status);
    if(l_start < 0) {
      status = nc_inq_dimlen(ncid,dimids[i],&dimlen);
      if(status != NC_NOERR) NC_RAISE(status);
      l_start += dimlen;
    }
    c_start[i]=l_start;
    c_count[i]=1;
  }

  Cdouble_to_NArray(NArray,ndims,c_count,ptr);

  status = nc_get_var1_double(ncid,varid,c_start,ptr);
  if(status != NC_NOERR) NC_RAISE(status);

  OBJ_TAINT(NArray);
  return NArray;

}

#get_var1_int(start) ⇒ Object 



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# File 'ext/numru/netcdfraw.c', line 2495

VALUE
NetCDF_get_var1_int(VALUE Var,VALUE start)
{
  int ncid;
  int varid;
  int status;
  int *ptr;
  int i;
  struct NetCDFVar *Netcdf_var;
  na_shape_t l_start;
  size_t *c_start;
  int ndims;
  int dimids[NC_MAX_DIMS];
  size_t dimlen;
  na_shape_t *c_count;
  VALUE NArray;

  Data_Get_Struct(Var,struct NetCDFVar,Netcdf_var);
  ncid = Netcdf_var->ncid;
  varid = Netcdf_var->varid;
  status = nc_inq_varndims(ncid, varid, &ndims);
  if(status != NC_NOERR)NC_RAISE(status);
  if(ndims == 0) {
    rb_raise(rb_eNetcdfError,"Cannot specify a subset of a rank-0 scalar\n");
  }

  Check_Type(start,T_ARRAY);
  if(RARRAY_LEN(start) < ndims) {
    rb_raise(rb_eNetcdfError,"Length of 'start' is too short\n");
  }

  c_start=ALLOCA_N(size_t,ndims);
  c_count=ALLOCA_N(na_shape_t,ndims);
  for(i=0;i<ndims;i++){
    l_start = NUM2INT(RARRAY_PTR(start)[ndims-1-i]);
    status = nc_inq_vardimid(ncid,varid,dimids);
    if(status != NC_NOERR) NC_RAISE(status);
    if(l_start < 0) {
      status = nc_inq_dimlen(ncid,dimids[i],&dimlen);
      if(status != NC_NOERR) NC_RAISE(status);
      l_start += dimlen;
    }
    c_start[i]=l_start;
    c_count[i]=1;
  }

  Clint_to_NArray(NArray,ndims,c_count,ptr);

  status = nc_get_var1_int(ncid,varid,c_start,ptr);
  if(status != NC_NOERR) NC_RAISE(status);

  OBJ_TAINT(NArray);
  return NArray;

}

#get_var1_sfloat(start) ⇒ Object 



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# File 'ext/numru/netcdfraw.c', line 2551

VALUE
NetCDF_get_var1_float(VALUE Var,VALUE start)
{
  int ncid;
  int varid;
  int status;
  float *ptr;
  int i;
  struct NetCDFVar *Netcdf_var;
  na_shape_t l_start;
  size_t *c_start;
  int ndims;
  int dimids[NC_MAX_DIMS];
  size_t dimlen;
  na_shape_t *c_count;
  VALUE NArray;

  Data_Get_Struct(Var,struct NetCDFVar,Netcdf_var);
  ncid = Netcdf_var->ncid;
  varid = Netcdf_var->varid;
  status = nc_inq_varndims(ncid, varid, &ndims);
  if(status != NC_NOERR)NC_RAISE(status);
  if(ndims == 0) {
    rb_raise(rb_eNetcdfError,"Cannot specify a subset of a rank-0 scalar\n");
  }

  Check_Type(start,T_ARRAY);
  if(RARRAY_LEN(start) < ndims) {
    rb_raise(rb_eNetcdfError,"Length of 'start' is too short\n");
  }

  c_start=ALLOCA_N(size_t,ndims);
  c_count=ALLOCA_N(na_shape_t,ndims);
  for(i=0;i<ndims;i++){
    l_start = NUM2INT(RARRAY_PTR(start)[ndims-1-i]);
    status = nc_inq_vardimid(ncid, varid, dimids);
    if(status != NC_NOERR) NC_RAISE(status);
    if(l_start < 0) {
      status = nc_inq_dimlen(ncid,dimids[i],&dimlen);
      if(status != NC_NOERR) NC_RAISE(status);
      l_start += dimlen;
    }
    c_start[i]=l_start;
    c_count[i]=1;
  }

  Cfloat_to_NArray(NArray,ndims,c_count,ptr);

  status = nc_get_var1_float(ncid,varid,c_start,ptr);
  if(status != NC_NOERR) NC_RAISE(status);

  OBJ_TAINT(NArray);
  return NArray;

}

#get_var1_sint(start) ⇒ Object 



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# File 'ext/numru/netcdfraw.c', line 2439

VALUE
NetCDF_get_var1_sint(VALUE Var,VALUE start)
{
  int ncid;
  int varid;
  int status;
  short *ptr;
  int i;
  struct NetCDFVar *Netcdf_var;
  na_shape_t l_start;
  size_t *c_start;
  int ndims;
  int dimids[NC_MAX_DIMS];
  size_t dimlen;
  na_shape_t *c_count;
  VALUE NArray;

  Data_Get_Struct(Var,struct NetCDFVar,Netcdf_var);
  ncid = Netcdf_var->ncid;
  varid = Netcdf_var->varid;
  status = nc_inq_varndims(ncid, varid, &ndims);
  if(status != NC_NOERR) NC_RAISE(status);
  if(ndims == 0) {
    rb_raise(rb_eNetcdfError,"Cannot specify a subset of a rank-0 scalar\n");
  }

  Check_Type(start,T_ARRAY);
  if(RARRAY_LEN(start) < ndims) {
    rb_raise(rb_eNetcdfError,"Length of 'start' is too short\n");
  }

  c_start=ALLOCA_N(size_t,ndims);
  c_count=ALLOCA_N(na_shape_t,ndims);
  for(i=0;i<ndims;i++){
    l_start = NUM2INT(RARRAY_PTR(start)[ndims-1-i]);
    status = nc_inq_vardimid(ncid,varid,dimids);
    if(status != NC_NOERR) NC_RAISE(status);
    if(l_start < 0) {
      status = nc_inq_dimlen(ncid,dimids[i],&dimlen);
      if(status != NC_NOERR) NC_RAISE(status);
      l_start += dimlen;
    }
    c_start[i]=l_start;
    c_count[i]=1;
  }

  Csint_to_NArray(NArray,ndims,c_count,ptr);

  status = nc_get_var1_short(ncid,varid,c_start,ptr);
  if(status != NC_NOERR) NC_RAISE(status);

  OBJ_TAINT(NArray);
  return NArray;

}

#get_var_byte ⇒ Object 



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# File 'ext/numru/netcdfraw.c', line 2099

VALUE
NetCDF_get_var_byte(VALUE Var)
{
  int ncid;
  int varid;
  int status;
  unsigned char *ptr;
  struct NetCDFVar *Netcdf_var;
  int i=0;
  int ndimsp;
  int *dimids;
  size_t lengthp;
  na_shape_t *shape;    /* NArray uses int instead of size_t */
  VALUE NArray;

  Data_Get_Struct(Var,struct NetCDFVar,Netcdf_var);
  ncid = Netcdf_var->ncid;
  varid = Netcdf_var->varid;
  status = nc_inq_varndims(ncid,varid,&ndimsp);
  if(status != NC_NOERR) NC_RAISE(status);
  dimids = ALLOCA_N(int,ndimsp);
  if (ndimsp != 0){
      shape = ALLOCA_N(na_shape_t,ndimsp);
      for(i=0;i<ndimsp;i++){
	  status = nc_inq_vardimid(ncid,varid,dimids);
	  if(status != NC_NOERR) NC_RAISE(status);
	  nc_inq_dimlen(ncid,dimids[i],&lengthp);
	  shape[ndimsp-1-i]=lengthp;
      }
  } else {
      ndimsp = 1;
      shape = ALLOCA_N(na_shape_t,1);
      shape[0]=1;
  }

  Cbyte_to_NArray(NArray,ndimsp,shape,ptr);

  status = nc_get_var_uchar(ncid,varid,ptr);
  if(status != NC_NOERR) NC_RAISE(status);

  OBJ_TAINT(NArray);
  return NArray;
}

#get_var_char ⇒ Object

Follow methods is to connect “NArray” with “Netcdf”



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# File 'ext/numru/netcdfraw.c', line 2055

VALUE
NetCDF_get_var_char(VALUE Var)
{
  int ncid;
  int varid;
  int status;
  unsigned char *ptr;
  struct NetCDFVar *Netcdf_var;
  int i=0;
  int ndimsp;
  int *dimids;
  size_t lengthp;
  na_shape_t *shape;    /* NArray uses int instead of size_t */
  VALUE NArray;

  Data_Get_Struct(Var,struct NetCDFVar,Netcdf_var);
  ncid = Netcdf_var->ncid;
  varid = Netcdf_var->varid;
  status = nc_inq_varndims(ncid,varid,&ndimsp);
  if(status != NC_NOERR) NC_RAISE(status);
  dimids = ALLOCA_N(int,ndimsp);
  if (ndimsp != 0){
      shape = ALLOCA_N(na_shape_t,ndimsp);
      for(i=0;i<ndimsp;i++){
	  status = nc_inq_vardimid(ncid,varid,dimids);
	  if(status != NC_NOERR) NC_RAISE(status);
	  nc_inq_dimlen(ncid,dimids[i],&lengthp);
	  shape[ndimsp-1-i]=lengthp;
      }
  } else {
      ndimsp = 1;
      shape = ALLOCA_N(na_shape_t,1);
      shape[0]=1;
  }

  Cbyte_to_NArray(NArray,ndimsp,shape,ptr);

  status = nc_get_var_text(ncid,varid,(char *)ptr);
  if(status != NC_NOERR) NC_RAISE(status);

  OBJ_TAINT(NArray);
  return NArray;
}

#get_var_float ⇒ Object 



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# File 'ext/numru/netcdfraw.c', line 2275

VALUE
NetCDF_get_var_double(VALUE Var)
{
  int ncid;
  int varid;
  int status;
  double *ptr;
  struct NetCDFVar *Netcdf_var;
  int i=0;
  int ndimsp;
  int *dimids;
  size_t lengthp;
  na_shape_t *shape;    /* NArray uses int instead of size_t */
  VALUE NArray;

  Data_Get_Struct(Var,struct NetCDFVar,Netcdf_var);
  ncid = Netcdf_var->ncid;
  varid = Netcdf_var->varid;
  status = nc_inq_varndims(ncid,varid,&ndimsp);
  if(status != NC_NOERR) NC_RAISE(status);
  dimids = ALLOCA_N(int,ndimsp);
  if (ndimsp != 0){
      shape = ALLOCA_N(na_shape_t,ndimsp);
      for(i=0;i<ndimsp;i++){
	  status = nc_inq_vardimid(ncid,varid,dimids);
	  if(status != NC_NOERR) NC_RAISE(status);
	  nc_inq_dimlen(ncid,dimids[i],&lengthp);
	  shape[ndimsp-1-i]=lengthp;
      }
  } else {
      ndimsp = 1;
      shape = ALLOCA_N(na_shape_t,1);
      shape[0]=1;
  }

  Cdouble_to_NArray(NArray,ndimsp,shape,ptr);

  status = nc_get_var_double(ncid,varid,ptr);
  if(status != NC_NOERR) NC_RAISE(status);

  OBJ_TAINT(NArray);
  return NArray;
}

#get_var_int ⇒ Object 



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# File 'ext/numru/netcdfraw.c', line 2187

VALUE
NetCDF_get_var_int(VALUE Var)
{
  int ncid;
  int varid;
  int status;
  int *ptr;
  struct NetCDFVar *Netcdf_var;
  int i=0;
  int ndimsp;
  int *dimids;
  size_t lengthp;
  na_shape_t *shape;    /* NArray uses int instead of size_t */
  VALUE NArray;

  Data_Get_Struct(Var,struct NetCDFVar,Netcdf_var);
  ncid = Netcdf_var->ncid;
  varid = Netcdf_var->varid;
  status = nc_inq_varndims(ncid,varid,&ndimsp);
  if(status != NC_NOERR) NC_RAISE(status);
  dimids = ALLOCA_N(int,ndimsp);
  if (ndimsp != 0){
      shape = ALLOCA_N(na_shape_t,ndimsp);
      for(i=0;i<ndimsp;i++){
	  status = nc_inq_vardimid(ncid,varid,dimids);
	  if(status != NC_NOERR) NC_RAISE(status);
	  nc_inq_dimlen(ncid,dimids[i],&lengthp);
	  shape[ndimsp-1-i]=lengthp;
      }
  } else {
      ndimsp = 1;
      shape = ALLOCA_N(na_shape_t,1);
      shape[0]=1;
  }

  Clint_to_NArray(NArray,ndimsp,shape,ptr);

  status = nc_get_var_int(ncid,varid,ptr);
  if(status != NC_NOERR) NC_RAISE(status);

  OBJ_TAINT(NArray);
  return NArray;
}

#get_var_sfloat ⇒ Object 



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# File 'ext/numru/netcdfraw.c', line 2231

VALUE
NetCDF_get_var_float(VALUE Var)
{
  int ncid;
  int varid;
  int status;
  float *ptr;
  struct NetCDFVar *Netcdf_var;
  int i=0;
  int ndimsp;
  int *dimids;
  size_t lengthp;
  na_shape_t *shape;    /* NArray uses int instead of size_t */
  VALUE NArray;

  Data_Get_Struct(Var,struct NetCDFVar,Netcdf_var);
  ncid = Netcdf_var->ncid;
  varid = Netcdf_var->varid;
  status = nc_inq_varndims(ncid,varid,&ndimsp);
  if(status != NC_NOERR) NC_RAISE(status);
  dimids = ALLOCA_N(int,ndimsp);
  if (ndimsp != 0){
      shape = ALLOCA_N(na_shape_t,ndimsp);
      for(i=0;i<ndimsp;i++){
	  status = nc_inq_vardimid(ncid,varid,dimids);
	  if(status != NC_NOERR) NC_RAISE(status);
	  nc_inq_dimlen(ncid,dimids[i],&lengthp);
	  shape[ndimsp-1-i]=lengthp;
      }
  } else {
      ndimsp = 1;
      shape = ALLOCA_N(na_shape_t,1);
      shape[0]=1;
  }

  Cfloat_to_NArray(NArray,ndimsp,shape,ptr);

  status = nc_get_var_float(ncid,varid,ptr);
  if(status != NC_NOERR) NC_RAISE(status);

  OBJ_TAINT(NArray);
  return NArray;
}

#get_var_sint ⇒ Object 



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# File 'ext/numru/netcdfraw.c', line 2143

VALUE
NetCDF_get_var_sint(VALUE Var)
{
  int ncid;
  int varid;
  int status;
  short *ptr;
  struct NetCDFVar *Netcdf_var;
  int i=0;
  int ndimsp;
  int *dimids;
  size_t lengthp;
  na_shape_t *shape;    /* NArray uses int instead of size_t */
  VALUE NArray;

  Data_Get_Struct(Var,struct NetCDFVar,Netcdf_var);
  ncid = Netcdf_var->ncid;
  varid = Netcdf_var->varid;
  status = nc_inq_varndims(ncid,varid,&ndimsp);
  if(status != NC_NOERR) NC_RAISE(status);
  dimids = ALLOCA_N(int,ndimsp);
  if (ndimsp != 0){
      shape = ALLOCA_N(na_shape_t,ndimsp);
      for(i=0;i<ndimsp;i++){
	  status = nc_inq_vardimid(ncid,varid,dimids);
	  if(status != NC_NOERR) NC_RAISE(status);
	  nc_inq_dimlen(ncid,dimids[i],&lengthp);
	  shape[ndimsp-1-i]=lengthp;
      }
  } else {
      ndimsp = 1;
      shape = ALLOCA_N(na_shape_t,1);
      shape[0]=1;
  }

  Csint_to_NArray(NArray,ndimsp,shape,ptr);

  status = nc_get_var_short(ncid,varid,ptr);
  if(status != NC_NOERR) NC_RAISE(status);

  OBJ_TAINT(NArray);
  return NArray;
}

#get_vars_byte(start, end, stride) ⇒ Object 



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# File 'ext/numru/netcdfraw.c', line 2771

VALUE
NetCDF_get_vars_byte(VALUE Var,VALUE start,VALUE end,VALUE stride)
{
  int ncid;
  int varid;
  int status;
  unsigned char *ptr;
  int i;
  struct NetCDFVar *Netcdf_var;
  na_shape_t l_start, l_end;
  size_t *c_start;
  size_t *c_count;
  ptrdiff_t *c_stride;
  na_shape_t *shape;    /* NArray uses int instead of size_t */
  int ndims;
  int *dimids;
  size_t dimlen;
  VALUE NArray;

  Data_Get_Struct(Var,struct NetCDFVar,Netcdf_var);
  ncid = Netcdf_var->ncid;
  varid = Netcdf_var->varid;

  status = nc_inq_varndims(ncid,varid,&ndims);
  if(status != NC_NOERR) NC_RAISE(status);
  if(ndims == 0) {
    rb_raise(rb_eNetcdfError,"Cannot specify a subset of a rank-0 scalar\n");
  }

  dimids = ALLOCA_N(int,ndims);
  status = nc_inq_vardimid(ncid,varid,dimids);
  if(status != NC_NOERR) NC_RAISE(status);

  Check_Type(start,T_ARRAY);
  if(RARRAY_LEN(start) < ndims){
    rb_raise(rb_eNetcdfError, "Length of 'start' is too short\n");
  }
  c_start = ALLOCA_N(size_t,ndims);
  for(i=0; i<ndims; i++){
    l_start=NUM2INT(RARRAY_PTR(start)[ndims-1-i]);

    if(l_start < 0) {
      status = nc_inq_dimlen(ncid, dimids[i], &dimlen);
      if(status != NC_NOERR) NC_RAISE(status);
      l_start += dimlen;
    }
    c_start[i]=l_start;
  }

  c_stride=ALLOCA_N(ptrdiff_t,ndims);
  switch(TYPE(stride)){
  case T_NIL:
    for(i=0; i<ndims; i++){
      c_stride[i]=1;
    }
    break;
  default:
    Check_Type(stride,T_ARRAY);
    if(RARRAY_LEN(stride) < ndims) {
      rb_raise(rb_eNetcdfError, "Length of 'stride is too short\n");
    }
    for(i=0;i<ndims; i++){
      c_stride[i]=NUM2INT(RARRAY_PTR(stride)[ndims-1-i]);
      if(c_stride[i]==0){
	rb_raise(rb_eNetcdfError,"stride cannot be zero\n");
      }
    }
  }

  c_count=ALLOCA_N(size_t,ndims);
  switch(TYPE(end)){
  case T_NIL:
    for(i=0; i<ndims; i++){
      nc_inq_dimlen(ncid,dimids[i],&dimlen);
      c_count[i]=(dimlen-c_start[i]-1)/c_stride[i]+1;
    }
    break;
  default:
    Check_Type(end,T_ARRAY);
    if(RARRAY_LEN(end) <ndims) {
      rb_raise(rb_eNetcdfError, "Length of 'end' is too short\n");
    }
    for(i=0; i<ndims; i++){
      l_end= NUM2INT(RARRAY_PTR(end)[ndims-1-i]);
      if(l_end < 0) {
	status = nc_inq_dimlen(ncid,dimids[i],&dimlen);
	if(status != NC_NOERR) NC_RAISE(status);
	l_end +=dimlen;
      }
      c_count[i]=(l_end-c_start[i])/c_stride[i]+1;
    }
  }


  shape = ALLOCA_N(na_shape_t,ndims);
  for(i=0;i<ndims;i++){
    shape[ndims-1-i]=c_count[i];
  }

  Cbyte_to_NArray(NArray,ndims,shape,ptr);

  status = nc_get_vars_uchar(ncid,varid,c_start,c_count,c_stride,ptr);
  if(status != NC_NOERR) NC_RAISE(status);

  OBJ_TAINT(NArray);
  return NArray;
}

#get_vars_char(start, end, stride) ⇒ Object 



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# File 'ext/numru/netcdfraw.c', line 2663

VALUE
NetCDF_get_vars_char(VALUE Var,VALUE start,VALUE end,VALUE stride)
{
  int ncid;
  int varid;
  int status;
  unsigned char *ptr;
  int i;
  struct NetCDFVar *Netcdf_var;
  na_shape_t l_start, l_end;
  size_t *c_start;
  size_t *c_count;
  ptrdiff_t *c_stride;
  na_shape_t *shape;    /* NArray uses int instead of size_t */
  int ndims;
  int *dimids;
  size_t dimlen;
  VALUE NArray;

  Data_Get_Struct(Var,struct NetCDFVar,Netcdf_var);
  ncid = Netcdf_var->ncid;
  varid = Netcdf_var->varid;

  status = nc_inq_varndims(ncid,varid,&ndims);
  if(status != NC_NOERR) NC_RAISE(status);
  if(ndims == 0) {
    rb_raise(rb_eNetcdfError,"Cannot specify a subset of a rank-0 scalar\n");
  }

  dimids = ALLOCA_N(int,ndims);
  status = nc_inq_vardimid(ncid,varid,dimids);
  if(status != NC_NOERR) NC_RAISE(status);

  Check_Type(start,T_ARRAY);
  if(RARRAY_LEN(start) < ndims){
    rb_raise(rb_eNetcdfError, "Length of 'start' is too short\n");
  }
  c_start = ALLOCA_N(size_t,ndims);
  for(i=0; i<ndims; i++){
    l_start=NUM2INT(RARRAY_PTR(start)[ndims-1-i]);

    if(l_start < 0) {
      status = nc_inq_dimlen(ncid, dimids[i], &dimlen);
      if(status != NC_NOERR) NC_RAISE(status);
      l_start += dimlen;
    }
    c_start[i]=l_start;
  }

  c_stride=ALLOCA_N(ptrdiff_t,ndims);
  switch(TYPE(stride)){
  case T_NIL:
    for(i=0; i<ndims; i++){
      c_stride[i]=1;
    }
    break;
  default:
    Check_Type(stride,T_ARRAY);
    if(RARRAY_LEN(stride) < ndims) {
      rb_raise(rb_eNetcdfError, "Length of 'stride is too short\n");
    }
    for(i=0;i<ndims; i++){
      c_stride[i]=NUM2INT(RARRAY_PTR(stride)[ndims-1-i]);
      if(c_stride[i]==0){
	rb_raise(rb_eNetcdfError,"stride cannot be zero\n");
      }
    }
  }

  c_count=ALLOCA_N(size_t,ndims);
  switch(TYPE(end)){
  case T_NIL:
    for(i=0; i<ndims; i++){
      nc_inq_dimlen(ncid,dimids[i],&dimlen);
      c_count[i]=(dimlen-c_start[i]-1)/c_stride[i]+1;
    }
    break;
  default:
    Check_Type(end,T_ARRAY);
    if(RARRAY_LEN(end) <ndims) {
      rb_raise(rb_eNetcdfError, "Length of 'end' is too short\n");
    }
    for(i=0; i<ndims; i++){
      l_end= NUM2INT(RARRAY_PTR(end)[ndims-1-i]);
      if(l_end < 0) {
	status = nc_inq_dimlen(ncid,dimids[i],&dimlen);
	if(status != NC_NOERR) NC_RAISE(status);
	l_end +=dimlen;
      }
      c_count[i]=(l_end-c_start[i])/c_stride[i]+1;
    }
  }


  shape = ALLOCA_N(na_shape_t,ndims);
  for(i=0;i<ndims;i++){
    shape[ndims-1-i]=c_count[i];
  }

  Cbyte_to_NArray(NArray,ndims,shape,ptr);

  status = nc_get_vars_text(ncid,varid,c_start,c_count,c_stride,(char *)ptr);
  if(status != NC_NOERR) NC_RAISE(status);

  OBJ_TAINT(NArray);
  return NArray;
}

#get_vars_float(start, end, stride) ⇒ Object 



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# File 'ext/numru/netcdfraw.c', line 3206

VALUE
NetCDF_get_vars_double(VALUE Var,VALUE start,VALUE end,VALUE stride)
{
  int ncid;
  int varid;
  int status;
  double *ptr;
  int i;
  struct NetCDFVar *Netcdf_var;
  na_shape_t l_start, l_end;
  size_t *c_start;
  size_t *c_count;
  ptrdiff_t *c_stride;
  na_shape_t *shape;    /* NArray uses int instead of size_t */
  int ndims;
  int *dimids;
  size_t dimlen;
  VALUE NArray;

  Data_Get_Struct(Var,struct NetCDFVar,Netcdf_var);
  ncid = Netcdf_var->ncid;
  varid = Netcdf_var->varid;

  status = nc_inq_varndims(ncid,varid,&ndims);
  if(status != NC_NOERR) NC_RAISE(status);
  if(ndims == 0) {
    rb_raise(rb_eNetcdfError,"Cannot specify a subset of a rank-0 scalar\n");
  }

  dimids = ALLOCA_N(int,ndims);
  status = nc_inq_vardimid(ncid,varid,dimids);
  if(status != NC_NOERR) NC_RAISE(status);

  Check_Type(start,T_ARRAY);
  if(RARRAY_LEN(start) < ndims){
    rb_raise(rb_eNetcdfError, "Length of 'start' is too short\n");
  }
  c_start = ALLOCA_N(size_t,ndims);
  for(i=0; i<ndims; i++){
    l_start=NUM2INT(RARRAY_PTR(start)[ndims-1-i]);

    if(l_start < 0) {
      status = nc_inq_dimlen(ncid, dimids[i], &dimlen);
      if(status != NC_NOERR) NC_RAISE(status);
      l_start += dimlen;
    }
    c_start[i]=l_start;
  }

  c_stride=ALLOCA_N(ptrdiff_t,ndims);
  switch(TYPE(stride)){
  case T_NIL:
    for(i=0; i<ndims; i++){
      c_stride[i]=1;
    }
    break;
  default:
    Check_Type(stride,T_ARRAY);
    if(RARRAY_LEN(stride) < ndims) {
      rb_raise(rb_eNetcdfError, "Length of 'stride is too short\n");
    }
    for(i=0;i<ndims; i++){
      c_stride[i]=NUM2INT(RARRAY_PTR(stride)[ndims-1-i]);
      if(c_stride[i]==0){
	rb_raise(rb_eNetcdfError,"stride cannot be zero\n");
      }
    }
  }

  c_count=ALLOCA_N(size_t,ndims);
  switch(TYPE(end)){
  case T_NIL:
    for(i=0; i<ndims; i++){
      nc_inq_dimlen(ncid,dimids[i],&dimlen);
      c_count[i]=(dimlen-c_start[i]-1)/c_stride[i]+1;
    }
    break;
  default:
    Check_Type(end,T_ARRAY);
    if(RARRAY_LEN(end) <ndims) {
      rb_raise(rb_eNetcdfError, "Length of 'end' is too short\n");
    }
    for(i=0; i<ndims; i++){
      l_end= NUM2INT(RARRAY_PTR(end)[ndims-1-i]);
      if(l_end < 0) {
	status = nc_inq_dimlen(ncid,dimids[i],&dimlen);
	if(status != NC_NOERR) NC_RAISE(status);
	l_end +=dimlen;
      }
      c_count[i]=(l_end-c_start[i])/c_stride[i]+1;
    }
  }


  shape = ALLOCA_N(na_shape_t,ndims);
  for(i=0;i<ndims;i++){
    shape[ndims-1-i]=c_count[i];
  }

  Cdouble_to_NArray(NArray,ndims,shape,ptr);

  status = nc_get_vars_double(ncid,varid,c_start,c_count,c_stride,ptr);
  if(status != NC_NOERR) NC_RAISE(status);

  OBJ_TAINT(NArray);
  return NArray;
}

#get_vars_int(start, end, stride) ⇒ Object 



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# File 'ext/numru/netcdfraw.c', line 2988

VALUE
NetCDF_get_vars_int(VALUE Var,VALUE start,VALUE end,VALUE stride)
{
  int ncid;
  int varid;
  int status;
  int *ptr;
  int i;
  struct NetCDFVar *Netcdf_var;
  na_shape_t l_start, l_end;
  size_t *c_start;
  size_t *c_count;
  ptrdiff_t *c_stride;
  na_shape_t *shape;    /* NArray uses int instead of size_t */
  int ndims;
  int *dimids;
  size_t dimlen;
  VALUE NArray;

  Data_Get_Struct(Var,struct NetCDFVar,Netcdf_var);
  ncid = Netcdf_var->ncid;
  varid = Netcdf_var->varid;

  status = nc_inq_varndims(ncid,varid,&ndims);
  if(status != NC_NOERR) NC_RAISE(status);
  if(ndims == 0) {
    rb_raise(rb_eNetcdfError,"Cannot specify a subset of a rank-0 scalar\n");
  }

  dimids = ALLOCA_N(int,ndims);
  status = nc_inq_vardimid(ncid,varid,dimids);
  if(status != NC_NOERR) NC_RAISE(status);

  Check_Type(start,T_ARRAY);
  if(RARRAY_LEN(start) < ndims){
    rb_raise(rb_eNetcdfError, "Length of 'start' is too short\n");
  }
  c_start = ALLOCA_N(size_t,ndims);
  for(i=0; i<ndims; i++){
    l_start=NUM2INT(RARRAY_PTR(start)[ndims-1-i]);

    if(l_start < 0) {
      status = nc_inq_dimlen(ncid, dimids[i], &dimlen);
      if(status != NC_NOERR) NC_RAISE(status);
      l_start += dimlen;
    }
    c_start[i]=l_start;
  }

  c_stride=ALLOCA_N(ptrdiff_t,ndims);
  switch(TYPE(stride)){
  case T_NIL:
    for(i=0; i<ndims; i++){
      c_stride[i]=1;
    }
    break;
  default:
    Check_Type(stride,T_ARRAY);
    if(RARRAY_LEN(stride) < ndims) {
      rb_raise(rb_eNetcdfError, "Length of 'stride is too short\n");
    }
    for(i=0;i<ndims; i++){
      c_stride[i]=NUM2INT(RARRAY_PTR(stride)[ndims-1-i]);
      if(c_stride[i]==0){
	rb_raise(rb_eNetcdfError,"stride cannot be zero\n");
      }
    }
  }

  c_count=ALLOCA_N(size_t,ndims);
  switch(TYPE(end)){
  case T_NIL:
    for(i=0; i<ndims; i++){
      nc_inq_dimlen(ncid,dimids[i],&dimlen);
      c_count[i]=(dimlen-c_start[i]-1)/c_stride[i]+1;
    }
    break;
  default:
    Check_Type(end,T_ARRAY);
    if(RARRAY_LEN(end) <ndims) {
      rb_raise(rb_eNetcdfError, "Length of 'end' is too short\n");
    }
    for(i=0; i<ndims; i++){
      l_end= NUM2INT(RARRAY_PTR(end)[ndims-1-i]);
      if(l_end < 0) {
	status = nc_inq_dimlen(ncid,dimids[i],&dimlen);
	if(status != NC_NOERR) NC_RAISE(status);
	l_end +=dimlen;
      }
      c_count[i]=(l_end-c_start[i])/c_stride[i]+1;
    }
  }


  shape = ALLOCA_N(na_shape_t,ndims);
  for(i=0;i<ndims;i++){
    shape[ndims-1-i]=c_count[i];
  }

  Clint_to_NArray(NArray,ndims,shape,ptr);


  status = nc_get_vars_int(ncid,varid,c_start,c_count,c_stride,ptr);
  if(status != NC_NOERR) NC_RAISE(status);

  OBJ_TAINT(NArray);
  return NArray;
}

#get_vars_sfloat(start, end, stride) ⇒ Object 



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# File 'ext/numru/netcdfraw.c', line 3097

VALUE
NetCDF_get_vars_float(VALUE Var,VALUE start,VALUE end,VALUE stride)
{
  int ncid;
  int varid;
  int status;
  float *ptr;
  int i;
  struct NetCDFVar *Netcdf_var;
  na_shape_t l_start, l_end;
  size_t *c_start;
  size_t *c_count;
  ptrdiff_t *c_stride;
  na_shape_t *shape;    /* NArray uses int instead of size_t */
  int ndims;
  int *dimids;
  size_t dimlen;
  VALUE NArray;

  Data_Get_Struct(Var,struct NetCDFVar,Netcdf_var);
  ncid = Netcdf_var->ncid;
  varid = Netcdf_var->varid;

  status = nc_inq_varndims(ncid,varid,&ndims);
  if(status != NC_NOERR) NC_RAISE(status);
  if(ndims == 0) {
    rb_raise(rb_eNetcdfError,"Cannot specify a subset of a rank-0 scalar\n");
  }

  dimids = ALLOCA_N(int,ndims);
  status = nc_inq_vardimid(ncid,varid,dimids);
  if(status != NC_NOERR) NC_RAISE(status);

  Check_Type(start,T_ARRAY);
  if(RARRAY_LEN(start) < ndims){
    rb_raise(rb_eNetcdfError, "Length of 'start' is too short\n");
  }
  c_start = ALLOCA_N(size_t,ndims);
  for(i=0; i<ndims; i++){
    l_start=NUM2INT(RARRAY_PTR(start)[ndims-1-i]);

    if(l_start < 0) {
      status = nc_inq_dimlen(ncid, dimids[i], &dimlen);
      if(status != NC_NOERR) NC_RAISE(status);
      l_start += dimlen;
    }
    c_start[i]=l_start;
  }

  c_stride=ALLOCA_N(ptrdiff_t,ndims);
  switch(TYPE(stride)){
  case T_NIL:
    for(i=0; i<ndims; i++){
      c_stride[i]=1;
    }
    break;
  default:
    Check_Type(stride,T_ARRAY);
    if(RARRAY_LEN(stride) < ndims) {
      rb_raise(rb_eNetcdfError, "Length of 'stride is too short\n");
    }
    for(i=0;i<ndims; i++){
      c_stride[i]=NUM2INT(RARRAY_PTR(stride)[ndims-1-i]);
      if(c_stride[i]==0){
	rb_raise(rb_eNetcdfError,"stride cannot be zero\n");
      }
    }
  }

  c_count=ALLOCA_N(size_t,ndims);
  switch(TYPE(end)){
  case T_NIL:
    for(i=0; i<ndims; i++){
      nc_inq_dimlen(ncid,dimids[i],&dimlen);
      c_count[i]=(dimlen-c_start[i]-1)/c_stride[i]+1;
    }
    break;
  default:
    Check_Type(end,T_ARRAY);
    if(RARRAY_LEN(end) <ndims) {
      rb_raise(rb_eNetcdfError, "Length of 'end' is too short\n");
    }
    for(i=0; i<ndims; i++){
      l_end= NUM2INT(RARRAY_PTR(end)[ndims-1-i]);
      if(l_end < 0) {
	status = nc_inq_dimlen(ncid,dimids[i],&dimlen);
	if(status != NC_NOERR) NC_RAISE(status);
	l_end +=dimlen;
      }
      c_count[i]=(l_end-c_start[i])/c_stride[i]+1;
    }
  }


  shape = ALLOCA_N(na_shape_t,ndims);
  for(i=0;i<ndims;i++){
    shape[ndims-1-i]=c_count[i];
  }

  Cfloat_to_NArray(NArray,ndims,shape,ptr);


  status = nc_get_vars_float(ncid,varid,c_start,c_count,c_stride,ptr);
  if(status != NC_NOERR) NC_RAISE(status);

  OBJ_TAINT(NArray);
  return NArray;
}

#get_vars_sint(start, end, stride) ⇒ Object 



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# File 'ext/numru/netcdfraw.c', line 2879

VALUE
NetCDF_get_vars_sint(VALUE Var,VALUE start,VALUE end,VALUE stride)
{
  int ncid;
  int varid;
  int status;
  short *ptr;
  int i;
  struct NetCDFVar *Netcdf_var;
  na_shape_t l_start, l_end;
  size_t *c_start;
  size_t *c_count;
  ptrdiff_t *c_stride;
  na_shape_t *shape;    /* NArray uses int instead of size_t */
  int ndims;
  int *dimids;
  size_t dimlen;
  VALUE NArray;

  Data_Get_Struct(Var,struct NetCDFVar,Netcdf_var);
  ncid = Netcdf_var->ncid;
  varid = Netcdf_var->varid;

  status = nc_inq_varndims(ncid,varid,&ndims);
  if(status != NC_NOERR) NC_RAISE(status);
  if(ndims == 0) {
    rb_raise(rb_eNetcdfError,"Cannot specify a subset of a rank-0 scalar\n");
  }

  dimids = ALLOCA_N(int,ndims);
  status = nc_inq_vardimid(ncid,varid,dimids);
  if(status != NC_NOERR) NC_RAISE(status);

  Check_Type(start,T_ARRAY);
  if(RARRAY_LEN(start) < ndims){
    rb_raise(rb_eNetcdfError, "Length of 'start' is too short\n");
  }
  c_start = ALLOCA_N(size_t,ndims);
  for(i=0; i<ndims; i++){
    l_start=NUM2INT(RARRAY_PTR(start)[ndims-1-i]);

    if(l_start < 0) {
      status = nc_inq_dimlen(ncid, dimids[i], &dimlen);
      if(status != NC_NOERR) NC_RAISE(status);
      l_start += dimlen;
    }
    c_start[i]=l_start;
  }

  c_stride=ALLOCA_N(ptrdiff_t,ndims);
  switch(TYPE(stride)){
  case T_NIL:
    for(i=0; i<ndims; i++){
      c_stride[i]=1;
    }
    break;
  default:
    Check_Type(stride,T_ARRAY);
    if(RARRAY_LEN(stride) < ndims) {
      rb_raise(rb_eNetcdfError, "Length of 'stride is too short\n");
    }
    for(i=0;i<ndims; i++){
      c_stride[i]=NUM2INT(RARRAY_PTR(stride)[ndims-1-i]);
      if(c_stride[i]==0){
	rb_raise(rb_eNetcdfError,"stride cannot be zero\n");
      }
    }
  }

  c_count=ALLOCA_N(size_t,ndims);
  switch(TYPE(end)){
  case T_NIL:
    for(i=0; i<ndims; i++){
      nc_inq_dimlen(ncid,dimids[i],&dimlen);
      c_count[i]=(dimlen-c_start[i]-1)/c_stride[i]+1;
    }
    break;
  default:
    Check_Type(end,T_ARRAY);
    if(RARRAY_LEN(end) <ndims) {
      rb_raise(rb_eNetcdfError, "Length of 'end' is too short\n");
    }
    for(i=0; i<ndims; i++){
      l_end= NUM2INT(RARRAY_PTR(end)[ndims-1-i]);
      if(l_end < 0) {
	status = nc_inq_dimlen(ncid,dimids[i],&dimlen);
	if(status != NC_NOERR) NC_RAISE(status);
	l_end +=dimlen;
      }
      c_count[i]=(l_end-c_start[i])/c_stride[i]+1;
    }
  }


  shape = ALLOCA_N(na_shape_t,ndims);
  for(i=0;i<ndims;i++){
    shape[ndims-1-i]=c_count[i];
  }

  Csint_to_NArray(NArray,ndims,shape,ptr);


  status = nc_get_vars_short(ncid,varid,c_start,c_count,c_stride,ptr);
  if(status != NC_NOERR) NC_RAISE(status);

  OBJ_TAINT(NArray);
  return NArray;
}

#get_with_miss(*args) ⇒ Object 



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# File 'lib/numru/netcdf_miss.rb', line 8

def get_with_miss(*args)
  __interpret_missing_params if !defined?(@missval)
  data = simple_get(*args)
  if @vmin || @vmax
	if @vmin
	  mask = (data >= @vmin) 
	  mask = mask.and(data <= @vmax) if @vmax
	else
	  mask = (data <= @vmax)
	end
	data = NArrayMiss.to_nam(data, mask)
  elsif @missval	# only missing_value is present.
	mask = (data.ne(@missval)) 
	data = NArrayMiss.to_nam(data, mask)
  end
  data
end

#get_with_miss_and_scaling(*args) ⇒ Object 



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# File 'lib/numru/netcdf_miss.rb', line 26

def get_with_miss_and_scaling(*args)
  __interpret_missing_params if !defined?(@missval)
  data = simple_get(*args)
  if @vmin || @vmax
	if @vmin
	  mask = (data >= @vmin) 
	  mask = mask.and(data <= @vmax) if @vmax
	else
	  mask = (data <= @vmax)
	end
	data = NArrayMiss.to_nam(data, mask)
  elsif @missval	# only missing_value is present.
	mask = (data.ne(@missval))
	data = NArrayMiss.to_nam(data, mask)
  end
  data = unpack( data )
  data
end

#inspect ⇒ Object 



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# File 'lib/numru/netcdf.rb', line 775

def inspect
  'NetCDFVar:'+file.path+'?var='+name
end

#name ⇒ Object 



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# File 'ext/numru/netcdfraw.c', line 1792

VALUE
NetCDF_var_inq_name(VALUE Var)
{
  int ncid;
  int status;
  int varid;
  char c_var_name[NC_MAX_NAME];
  struct NetCDFVar *Netcdf_var;
  VALUE Var_name;

  Data_Get_Struct(Var,struct NetCDFVar,Netcdf_var);

  ncid=Netcdf_var->ncid;
  varid=Netcdf_var->varid;
  status = nc_inq_varname(ncid,varid,c_var_name);
  if(status != NC_NOERR) NC_RAISE(status);

  Var_name=rb_str_new2(c_var_name);
  OBJ_TAINT(Var_name);
  return Var_name;
}

#name=(var_new_name) ⇒ Object 



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# File 'ext/numru/netcdfraw.c', line 1910

VALUE
NetCDF_var_rename(VALUE Var,VALUE var_new_name)
{
  int ncid;
  int status;
  int varid;
  char *c_var_new_name;
  struct NetCDFVar *Netcdf_var;

  Data_Get_Struct(Var,struct NetCDFVar,Netcdf_var);
  ncid=Netcdf_var->ncid;
  varid=Netcdf_var->varid;

  Check_Type(var_new_name,T_STRING);
  c_var_new_name=StringValueCStr(var_new_name);

  status = nc_rename_var(ncid,varid,c_var_new_name);
  if(status !=NC_NOERR) NC_RAISE(status);

  return Qnil;
}

#natts ⇒ Object 



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# File 'ext/numru/netcdfraw.c', line 1877

VALUE
NetCDF_var_natts(VALUE Var)
{
  int ncid;
  int status;
  int varid;
  int nattsp;
  struct NetCDFVar *Netcdf_var;
  VALUE Var_natts;


  Data_Get_Struct(Var,struct NetCDFVar,Netcdf_var);

  ncid=Netcdf_var->ncid;
  varid=Netcdf_var->varid;

  status= nc_inq_varnatts(ncid,varid,&nattsp);
  if(status !=NC_NOERR) NC_RAISE(status);

  Var_natts=INT2FIX(nattsp);
  return Var_natts;
}

#ndims ⇒ Object Also known as: rank 



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# File 'ext/numru/netcdfraw.c', line 1814

VALUE
NetCDF_var_ndims(VALUE Var)
{
  int ncid;
  int status;
  int varid;
  int ndimsp;
  struct NetCDFVar *Netcdf_var;
  VALUE Var_ndims;

  Data_Get_Struct(Var,struct NetCDFVar,Netcdf_var);

  ncid=Netcdf_var->ncid;
  varid=Netcdf_var->varid;
  status = nc_inq_varndims(ncid,varid,&ndimsp);
  if(status != NC_NOERR) NC_RAISE(status);
  Var_ndims=INT2FIX(ndimsp);
  return Var_ndims;
}

#ntype ⇒ Object 



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# File 'ext/numru/netcdfraw.c', line 1834

VALUE
NetCDF_var_vartype(VALUE Var)
{
  int ncid;
  int status;
  int varid;
  nc_type xtypep;
  struct NetCDFVar *Netcdf_var;
  const char *Vartype;

  Data_Get_Struct(Var,struct NetCDFVar,Netcdf_var);

  ncid=Netcdf_var->ncid;
  varid=Netcdf_var->varid;

  status = nc_inq_vartype(ncid,varid,&xtypep);
  if(status != NC_NOERR) NC_RAISE(status);

  Vartype=nctype2natype(xtypep);
  return(rb_str_new2(Vartype));
}

#pack(na) ⇒ Object

The put and get methods in the NetCDFVar class



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# File 'lib/numru/netcdf.rb', line 341

def pack(na)
  sf = att('scale_factor')
  ao = att('add_offset')
  if ( sf == nil && ao == nil ) then
    na
  else
    na = NArray.to_na(na) if na.is_a?(Array)
    if sf
      csf = sf.get
      raise NetcdfError,"scale_factor is not a numeric" if csf.is_a?(String)
      raise NetcdfError, "scale_factor is not unique" if csf.length != 1
      raise NetcdfError, "zero scale_factor" if csf[0] == 0
    else
      csf = nil
    end
    if ao
      cao = ao.get
      raise NetcdfError, "add_offset is not a numeric" if cao.is_a?(String)
      raise NetcdfError, "add_offset is not unique" if cao.length != 1
    else
      cao = nil
    end
    if csf and cao
      packed = (na - cao) / csf
    elsif csf
      packed = na / csf
    elsif cao
      packed = na - cao
    end
    if self.typecode <= NArray::LINT
      packed = packed.round
    end
    packed
  end
end

#put_att(attname, val, atttype = nil) ⇒ Object 



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# File 'lib/numru/netcdf.rb', line 315

def put_att(attname,val,atttype=nil)
  put_attraw(attname,val,atttype)
end

#put_attraw ⇒ Object

atttype: nil or a String (“string”,“int”,etc). If nil,

the type of attribute is determined from the type of value



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# File 'ext/numru/netcdfraw.c', line 752

VALUE
NetCDF_put_att_var(VALUE var,VALUE att_name,VALUE value,VALUE atttype)
     /*
      * atttype: nil or a String ("string","int",etc). If nil,
      *          the type of attribute is determined from the type of value
      */
{
    struct NetCDFVar *ncvar;
    char *name;

    Data_Get_Struct(var,struct NetCDFVar,ncvar);
    Check_Type(att_name,T_STRING);
    name = RSTRING_PTR(att_name);

    return( NetCDF_put_att__(ncvar->ncid, name, value, atttype, ncvar->varid));
}

#put_var1_byte(NArray, start) ⇒ Object 



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# File 'ext/numru/netcdfraw.c', line 3636

VALUE
NetCDF_put_var1_byte(VALUE Var,VALUE NArray,VALUE start)
{
  int ncid;
  int varid;
  int status;
  unsigned char *ptr;
  int i;
  struct NetCDFVar *Netcdf_var;
  na_shape_t l_start;
  size_t *c_start;
  int ndims;
  int   *dimids;
  size_t dimlen;

  Data_Get_Struct(Var,struct NetCDFVar,Netcdf_var);
  ncid=Netcdf_var->ncid;
  varid=Netcdf_var->varid;
  status = nc_inq_varndims(ncid,varid,&ndims);
  if(status != NC_NOERR) NC_RAISE(status);


  dimids = ALLOCA_N(int,ndims);
  status = nc_inq_vardimid(ncid,varid,dimids);
  if(status != NC_NOERR) NC_RAISE(status);

  Check_Type(start,T_ARRAY);
  if(RARRAY_LEN(start) <ndims) {
    rb_raise(rb_eNetcdfError,"Length of 'start' is too short\n");
  }

  c_start=ALLOCA_N(size_t,ndims);
  for(i=0;i<ndims;i++){
    l_start=NUM2INT(RARRAY_PTR(start)[ndims-1-i]);

    if(l_start < 0) {
      status = nc_inq_dimlen(ncid,dimids[i],&dimlen);
      if(status != NC_NOERR) NC_RAISE(status);
      l_start += dimlen;
    }
    c_start[i]=l_start;

  }
  Array_to_Cbyte(NArray,ptr);

  status = nc_put_var1_uchar(ncid,varid,c_start,ptr);
  if(status != NC_NOERR) NC_RAISE(status);
  return Qnil;
}

#put_var1_char(NArray, start) ⇒ Object 



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# File 'ext/numru/netcdfraw.c', line 3586

VALUE
NetCDF_put_var1_char(VALUE Var,VALUE NArray,VALUE start)
{
  int ncid;
  int varid;
  int status;
  unsigned char *ptr;
  int i;
  struct NetCDFVar *Netcdf_var;
  na_shape_t l_start;
  size_t *c_start;
  int ndims;
  int   *dimids;
  size_t dimlen;

  Data_Get_Struct(Var,struct NetCDFVar,Netcdf_var);
  ncid=Netcdf_var->ncid;
  varid=Netcdf_var->varid;
  status = nc_inq_varndims(ncid,varid,&ndims);
  if(status != NC_NOERR) NC_RAISE(status);


  dimids = ALLOCA_N(int,ndims);
  status = nc_inq_vardimid(ncid,varid,dimids);
  if(status != NC_NOERR) NC_RAISE(status);

  Check_Type(start,T_ARRAY);
  if(RARRAY_LEN(start) <ndims) {
    rb_raise(rb_eNetcdfError,"Length of 'start' is too short\n");
  }

  c_start=ALLOCA_N(size_t,ndims);
  for(i=0;i<ndims;i++){
    l_start=NUM2INT(RARRAY_PTR(start)[ndims-1-i]);

    if(l_start < 0) {
      status = nc_inq_dimlen(ncid,dimids[i],&dimlen);
      if(status != NC_NOERR) NC_RAISE(status);
      l_start += dimlen;
    }
    c_start[i]=l_start;

  }
  Array_to_Cbyte(NArray,ptr);

  status = nc_put_var1_text(ncid,varid,c_start,(char *)ptr);
  if(status != NC_NOERR) NC_RAISE(status);
  return Qnil;
}

#put_var1_float(NArray, start) ⇒ Object 



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# File 'ext/numru/netcdfraw.c', line 3835

VALUE
NetCDF_put_var1_double(VALUE Var,VALUE NArray,VALUE start)
{
  int ncid;
  int varid;
  int status;
  double *ptr;
  int i;
  struct NetCDFVar *Netcdf_var;
  na_shape_t l_start;
  size_t *c_start;
  int ndims;
  int   *dimids;
  size_t dimlen;

  Data_Get_Struct(Var,struct NetCDFVar,Netcdf_var);
  ncid=Netcdf_var->ncid;
  varid=Netcdf_var->varid;
  status = nc_inq_varndims(ncid,varid,&ndims);
  if(status != NC_NOERR) NC_RAISE(status);


  dimids = ALLOCA_N(int,ndims);
  status = nc_inq_vardimid(ncid,varid,dimids);
  if(status != NC_NOERR) NC_RAISE(status);

  Check_Type(start,T_ARRAY);
  if(RARRAY_LEN(start) <ndims) {
    rb_raise(rb_eNetcdfError,"Length of 'start' is too short\n");
  }

  c_start=ALLOCA_N(size_t,ndims);
  for(i=0;i<ndims;i++){
    l_start=NUM2INT(RARRAY_PTR(start)[ndims-1-i]);

    if(l_start < 0) {
      status = nc_inq_dimlen(ncid,dimids[i],&dimlen);
      if(status != NC_NOERR) NC_RAISE(status);
      l_start += dimlen;
    }
    c_start[i]=l_start;

  }
  Array_to_Cdouble(NArray,ptr);

  status = nc_put_var1_double(ncid,varid,c_start,ptr);
  if(status != NC_NOERR) NC_RAISE(status);
  return Qnil;
}

#put_var1_int(NArray, start) ⇒ Object 



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# File 'ext/numru/netcdfraw.c', line 3735

VALUE
NetCDF_put_var1_int(VALUE Var,VALUE NArray,VALUE start)
{
  int ncid;
  int varid;
  int status;
  int *ptr;
  int i;
  struct NetCDFVar *Netcdf_var;
  na_shape_t l_start;
  size_t *c_start;
  int ndims;
  int   *dimids;
  size_t dimlen;

  Data_Get_Struct(Var,struct NetCDFVar,Netcdf_var);
  ncid=Netcdf_var->ncid;
  varid=Netcdf_var->varid;
  status = nc_inq_varndims(ncid,varid,&ndims);
  if(status != NC_NOERR) NC_RAISE(status);


  dimids = ALLOCA_N(int,ndims);
  status = nc_inq_vardimid(ncid,varid,dimids);
  if(status != NC_NOERR) NC_RAISE(status);

  Check_Type(start,T_ARRAY);
  if(RARRAY_LEN(start) <ndims) {
    rb_raise(rb_eNetcdfError,"Length of 'start' is too short\n");
  }

  c_start=ALLOCA_N(size_t,ndims);
  for(i=0;i<ndims;i++){
    l_start=NUM2INT(RARRAY_PTR(start)[ndims-1-i]);

    if(l_start < 0) {
      status = nc_inq_dimlen(ncid,dimids[i],&dimlen);
      if(status != NC_NOERR) NC_RAISE(status);
      l_start += dimlen;
    }
    c_start[i]=l_start;

  }
  Array_to_Clint(NArray,ptr);

  status = nc_put_var1_int(ncid,varid,c_start,ptr);
  if(status != NC_NOERR) NC_RAISE(status);
  return Qnil;
}

#put_var1_sfloat(NArray, start) ⇒ Object 



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# File 'ext/numru/netcdfraw.c', line 3785

VALUE
NetCDF_put_var1_float(VALUE Var,VALUE NArray,VALUE start)
{
  int ncid;
  int varid;
  int status;
  float *ptr;
  int i;
  struct NetCDFVar *Netcdf_var;
  na_shape_t l_start;
  size_t *c_start;
  int ndims;
  int   *dimids;
  size_t dimlen;

  Data_Get_Struct(Var,struct NetCDFVar,Netcdf_var);
  ncid=Netcdf_var->ncid;
  varid=Netcdf_var->varid;
  status = nc_inq_varndims(ncid,varid,&ndims);
  if(status != NC_NOERR) NC_RAISE(status);


  dimids = ALLOCA_N(int,ndims);
  status = nc_inq_vardimid(ncid,varid,dimids);
  if(status != NC_NOERR) NC_RAISE(status);

  Check_Type(start,T_ARRAY);
  if(RARRAY_LEN(start) <ndims) {
    rb_raise(rb_eNetcdfError,"Length of 'start' is too short\n");
  }

  c_start=ALLOCA_N(size_t,ndims);
  for(i=0;i<ndims;i++){
    l_start=NUM2INT(RARRAY_PTR(start)[ndims-1-i]);

    if(l_start < 0) {
      status = nc_inq_dimlen(ncid,dimids[i],&dimlen);
      if(status != NC_NOERR) NC_RAISE(status);
      l_start += dimlen;
    }
    c_start[i]=l_start;

  }
  Array_to_Cfloat(NArray,ptr);

  status = nc_put_var1_float(ncid,varid,c_start,ptr);
  if(status != NC_NOERR) NC_RAISE(status);
  return Qnil;
}

#put_var1_sint(NArray, start) ⇒ Object 



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# File 'ext/numru/netcdfraw.c', line 3686

VALUE
NetCDF_put_var1_sint(VALUE Var,VALUE NArray,VALUE start)
{
  int ncid;
  int varid;
  int status;
  short *ptr;
  int i;
  struct NetCDFVar *Netcdf_var;
  na_shape_t l_start;
  size_t *c_start;
  int ndims;
  int   *dimids;
  size_t dimlen;

  Data_Get_Struct(Var,struct NetCDFVar,Netcdf_var);
  ncid=Netcdf_var->ncid;
  varid=Netcdf_var->varid;
  status = nc_inq_varndims(ncid,varid,&ndims);
  if(status != NC_NOERR) NC_RAISE(status);


  dimids = ALLOCA_N(int,ndims);
  status = nc_inq_vardimid(ncid,varid,dimids);
  if(status != NC_NOERR) NC_RAISE(status);

  Check_Type(start,T_ARRAY);
  if(RARRAY_LEN(start) <ndims) {
    rb_raise(rb_eNetcdfError,"Length of 'start' is too short\n");
  }

  c_start=ALLOCA_N(size_t,ndims);
  for(i=0;i<ndims;i++){
    l_start=NUM2INT(RARRAY_PTR(start)[ndims-1-i]);

    if(l_start < 0) {
      status = nc_inq_dimlen(ncid,dimids[i],&dimlen);
      if(status != NC_NOERR) NC_RAISE(status);
      l_start += dimlen;
    }
    c_start[i]=l_start;

  }
  Array_to_Csint(NArray,ptr);

  status = nc_put_var1_short(ncid,varid,c_start,ptr);
  if(status != NC_NOERR) NC_RAISE(status);
  return Qnil;
}

#put_var_byte(NArray) ⇒ Object 



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# File 'ext/numru/netcdfraw.c', line 3359

VALUE
NetCDF_put_var_byte(VALUE Var,VALUE NArray)
{
  int ncid;
  int varid;
  int status;
  unsigned char *ptr,scalar;
  na_shape_t len,i=0;
  struct NetCDFVar *Netcdf_var;
  na_shape_t nc_tlen=1;
  int ndimsp;
  int dimids[NC_MAX_DIMS];
  size_t lengthp;
  char *var_name;

  Data_Get_Struct(Var,struct NetCDFVar,Netcdf_var);
  ncid=Netcdf_var->ncid;
  varid=Netcdf_var->varid;

  Array_to_Cbyte_len(NArray,ptr,len);

  status = nc_inq_varndims(ncid,varid,&ndimsp);
  if(status != NC_NOERR) NC_RAISE(status);
  for(i=0;i<ndimsp;i++){
    status = nc_inq_vardimid(ncid,varid,dimids);
    if(status != NC_NOERR) NC_RAISE(status);
    nc_inq_dimlen(ncid,dimids[i],&lengthp);
    nc_tlen=lengthp*nc_tlen;
  }
  if(len == 1 && len != nc_tlen){
    scalar = *ptr;
    ptr = ALLOCA_N(unsigned char,nc_tlen);
    for(i=0;i<nc_tlen;i++){ptr[i]=scalar;}
  } else if(len != nc_tlen){
    var_name=ALLOCA_N(char,NC_MAX_NAME);
    status = nc_inq_varname(ncid,varid,var_name);
    if(status != NC_NOERR) NC_RAISE(status );
    rb_raise(rb_eNetcdfError,"Length of NArray don't equal to length of total array in the '%s'\n",var_name);
  }
  status = nc_put_var_uchar(ncid,varid,ptr);
  if(status !=NC_NOERR) NC_RAISE(status);
  return Qnil;
}

#put_var_char(NArray) ⇒ Object

The “get*” or “put*” methods in the NetCDFVar class



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# File 'ext/numru/netcdfraw.c', line 3315

VALUE
NetCDF_put_var_char(VALUE Var,VALUE NArray)
{
  int ncid;
  int varid;
  int status;
  unsigned char *ptr,scalar;
  na_shape_t len,i=0;
  struct NetCDFVar *Netcdf_var;
  na_shape_t nc_tlen=1;
  int ndimsp;
  int dimids[NC_MAX_DIMS];
  size_t lengthp;
  char *var_name;

  Data_Get_Struct(Var,struct NetCDFVar,Netcdf_var);
  ncid=Netcdf_var->ncid;
  varid=Netcdf_var->varid;

  Array_to_Cbyte_len(NArray,ptr,len);

  status = nc_inq_varndims(ncid,varid,&ndimsp);
  if(status != NC_NOERR) NC_RAISE(status);
  for(i=0;i<ndimsp;i++){
    status = nc_inq_vardimid(ncid,varid,dimids);
    if(status != NC_NOERR) NC_RAISE(status);
    nc_inq_dimlen(ncid,dimids[i],&lengthp);
    nc_tlen=lengthp*nc_tlen;
  }
  if(len == 1 && len != nc_tlen){
    scalar = *ptr;
    ptr = ALLOCA_N(unsigned char,nc_tlen);
    for(i=0;i<nc_tlen;i++){ptr[i]=scalar;}
  } else if(len != nc_tlen){
    var_name=ALLOCA_N(char,NC_MAX_NAME);
    status = nc_inq_varname(ncid,varid,var_name);
    if(status != NC_NOERR) NC_RAISE(status );
    rb_raise(rb_eNetcdfError,"Length of NArray don't equal to length of total array in the '%s'\n",var_name);
  }
  status = nc_put_var_text(ncid,varid,(char *)ptr);
  if(status !=NC_NOERR) NC_RAISE(status);
  return Qnil;
}

#put_var_float(NArray) ⇒ Object 



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# File 'ext/numru/netcdfraw.c', line 3540

VALUE
NetCDF_put_var_double(VALUE Var,VALUE NArray)
{
  int ncid;
  int varid;
  int status;
  double *ptr,scalar;
  na_shape_t len,i=0;
  struct NetCDFVar *Netcdf_var;
  na_shape_t nc_tlen=1;
  int ndimsp;
  int dimids[NC_MAX_DIMS];
  size_t lengthp;
  char *var_name;


  Data_Get_Struct(Var,struct NetCDFVar,Netcdf_var);
  ncid=Netcdf_var->ncid;
  varid=Netcdf_var->varid;

  Array_to_Cdouble_len(NArray,ptr,len);

  status = nc_inq_varndims(ncid,varid,&ndimsp);
  if(status != NC_NOERR) NC_RAISE(status);
  for(i=0;i<ndimsp;i++){
    status = nc_inq_vardimid(ncid,varid,dimids);
    if(status != NC_NOERR) NC_RAISE(status);
    nc_inq_dimlen(ncid,dimids[i],&lengthp);
    nc_tlen=lengthp*nc_tlen;
  }
  if(len == 1 && len != nc_tlen){
    scalar = *ptr;
    ptr = ALLOCA_N(double,nc_tlen);
    for(i=0;i<nc_tlen;i++){ptr[i]=scalar;}
  } else if(len != nc_tlen){
    var_name=ALLOCA_N(char,NC_MAX_NAME);
    status = nc_inq_varname(ncid,varid,var_name);
    if(status != NC_NOERR) NC_RAISE(status);
    rb_raise(rb_eNetcdfError,"Length of NArray don't equal to length of total array length in the '%s'\n",var_name);
  }

  status = nc_put_var_double(ncid,varid,ptr);
  if(status !=NC_NOERR) NC_RAISE(status);
  return Qnil;
}

#put_var_int(NArray) ⇒ Object 



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# File 'ext/numru/netcdfraw.c', line 3447

VALUE
NetCDF_put_var_int(VALUE Var,VALUE NArray)
{
  int ncid;
  int varid;
  int status;
  int *ptr,scalar;
  na_shape_t len,i=0;
  struct NetCDFVar *Netcdf_var;
  na_shape_t nc_tlen=1;
  int ndimsp;
  int dimids[NC_MAX_DIMS];
  size_t lengthp;
  char *var_name;

  Data_Get_Struct(Var,struct NetCDFVar,Netcdf_var);
  ncid=Netcdf_var->ncid;
  varid=Netcdf_var->varid;

  Array_to_Clint_len(NArray,ptr,len);

  status = nc_inq_varndims(ncid,varid,&ndimsp);
  if(status != NC_NOERR) NC_RAISE(status);
  for(i=0;i<ndimsp;i++){
    status = nc_inq_vardimid(ncid,varid,dimids);
    if(status != NC_NOERR) NC_RAISE(status);
    nc_inq_dimlen(ncid,dimids[i],&lengthp);
    nc_tlen=lengthp*nc_tlen;
  }
  if(len == 1 && len != nc_tlen){
    scalar = *ptr;
    ptr = ALLOCA_N(int,nc_tlen);
    for(i=0;i<nc_tlen;i++){ptr[i]=scalar;}
  } else if(len != nc_tlen){
    var_name=ALLOCA_N(char,NC_MAX_NAME);
    status = nc_inq_varname(ncid,varid,var_name);
    if(status != NC_NOERR) NC_RAISE(status);
    rb_raise(rb_eNetcdfError,"Length of NArray don't equal to length of total array length in the '%s'\n",var_name);
  }


  status = nc_put_var_int(ncid,varid,ptr);
  if(status !=NC_NOERR) NC_RAISE(status);
  return Qnil;
}

#put_var_sfloat(NArray) ⇒ Object 



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# File 'ext/numru/netcdfraw.c', line 3494

VALUE
NetCDF_put_var_float(VALUE Var,VALUE NArray)
{
  int ncid;
  int varid;
  int status;
  float *ptr,scalar;
  na_shape_t len,i=0;
  struct NetCDFVar *Netcdf_var;
  na_shape_t nc_tlen=1;
  int ndimsp;
  int dimids[NC_MAX_DIMS];
  size_t lengthp;
  char *var_name;


  Data_Get_Struct(Var,struct NetCDFVar,Netcdf_var);
  ncid=Netcdf_var->ncid;
  varid=Netcdf_var->varid;

  Array_to_Cfloat_len(NArray,ptr,len);

  status = nc_inq_varndims(ncid,varid,&ndimsp);
  if(status != NC_NOERR) NC_RAISE(status);
  for(i=0;i<ndimsp;i++){
    status = nc_inq_vardimid(ncid,varid,dimids);
    if(status != NC_NOERR) NC_RAISE(status);
    nc_inq_dimlen(ncid,dimids[i],&lengthp);
    nc_tlen=lengthp*nc_tlen;
  }
  if(len == 1 && len != nc_tlen){
    scalar = *ptr;
    ptr = ALLOCA_N(float,nc_tlen);
    for(i=0;i<nc_tlen;i++){ptr[i]=scalar;}
  } else if(len != nc_tlen){
    var_name=ALLOCA_N(char,NC_MAX_NAME);
    status = nc_inq_varname(ncid,varid,var_name);
    if(status != NC_NOERR) NC_RAISE(status);
    rb_raise(rb_eNetcdfError,"Length of NArray don't equal to length of total array length in the '%s'\n",var_name);
  }

  status = nc_put_var_float(ncid,varid,ptr);
  if(status !=NC_NOERR) NC_RAISE(status);
  return Qnil;
}

#put_var_sint(NArray) ⇒ Object 



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# File 'ext/numru/netcdfraw.c', line 3403

VALUE
NetCDF_put_var_short(VALUE Var,VALUE NArray)
{
  int ncid;
  int varid;
  int status;
  short *ptr,scalar;
  na_shape_t len,i=0;
  struct NetCDFVar *Netcdf_var;
  na_shape_t nc_tlen=1;
  int ndimsp;
  int dimids[NC_MAX_DIMS];
  size_t lengthp;
  char *var_name;

  Data_Get_Struct(Var,struct NetCDFVar,Netcdf_var);
  ncid=Netcdf_var->ncid;
  varid=Netcdf_var->varid;
  Array_to_Csint_len(NArray,ptr,len);

  status = nc_inq_varndims(ncid,varid,&ndimsp);
  if(status != NC_NOERR) NC_RAISE(status);
  for(i=0;i<ndimsp;i++){
    status = nc_inq_vardimid(ncid,varid,dimids);
    if(status != NC_NOERR) NC_RAISE(status);
    nc_inq_dimlen(ncid,dimids[i],&lengthp);
    nc_tlen=lengthp*nc_tlen;
  }
  if(len == 1 && len != nc_tlen){
    scalar = *ptr;
    ptr = ALLOCA_N(short,nc_tlen);
    for(i=0;i<nc_tlen;i++){ptr[i]=scalar;}
  } else if(len != nc_tlen){
    var_name=ALLOCA_N(char,NC_MAX_NAME);
    status = nc_inq_varname(ncid,varid,var_name);
    if(status != NC_NOERR) NC_RAISE(status);
    rb_raise(rb_eNetcdfError,"Length of NArray don't equal to length of total array length in the '%s'\n",var_name);
  }

  status = nc_put_var_short(ncid,varid,ptr);
  if(status !=NC_NOERR) NC_RAISE(status);
  return Qnil;
}

#put_vars_byte(NArray, start, end, stride) ⇒ Object 



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# File 'ext/numru/netcdfraw.c', line 3991

VALUE
NetCDF_put_vars_byte(VALUE Var,VALUE NArray,VALUE start,VALUE end,VALUE stride)
{
  int ncid;
  int varid;
  int status;
  unsigned char *ptr,scalar;
  na_shape_t len;
  int c_count_all=1;
  struct NetCDFVar *Netcdf_var;
  na_shape_t l_start, l_end;
  size_t *c_start;
  size_t *c_count;
  ptrdiff_t *c_stride;
  int ndims,i;
  na_shape_t *shape;
  int   *dimids;
  size_t dimlen;

  Data_Get_Struct(Var,struct NetCDFVar,Netcdf_var);
  ncid=Netcdf_var->ncid;
  varid=Netcdf_var->varid;
  status = nc_inq_varndims(ncid, varid, &ndims);
  if(status != NC_NOERR) NC_RAISE(status);

  dimids=ALLOCA_N(int,ndims);
  status = nc_inq_vardimid(ncid, varid, dimids);
  if(status != NC_NOERR) NC_RAISE(status);

  Check_Type(start,T_ARRAY);
  if(RARRAY_LEN(start) < ndims) {
      rb_raise(rb_eNetcdfError, "Length of 'start' is too short\n");
  }
  c_start=ALLOCA_N(size_t,ndims);
  for(i=0; i<ndims; i++){
    l_start=NUM2INT(RARRAY_PTR(start)[ndims-1-i]);

    if(l_start < 0) {
	status = nc_inq_dimlen(ncid, dimids[i], &dimlen);
	if(status != NC_NOERR) NC_RAISE(status);
	l_start += dimlen;
    }
    c_start[i]=l_start;
  }

  c_stride=ALLOCA_N(ptrdiff_t,ndims);
  switch(TYPE(stride)){
  case T_NIL:
      for(i=0; i<ndims; i++){
	  c_stride[i]=1;
      }
      break;
  default:
      Check_Type(stride,T_ARRAY);
      if(RARRAY_LEN(stride) < ndims) {
	  rb_raise(rb_eNetcdfError, "Length of 'stride' is too short\n");
      }
      for(i=0; i<ndims; i++){
	  c_stride[i]=NUM2INT(RARRAY_PTR(stride)[ndims-1-i]);
	  if(c_stride[i]==0) {
	      rb_raise(rb_eNetcdfError, "stride cannot be zero\n");
	  }
      }
  }

  Array_to_Cbyte_len_shape(NArray,ptr,len,shape);

  c_count=ALLOCA_N(size_t,ndims);
  switch(TYPE(end)){
  case T_NIL:
      for(i=0; i<ndims; i++){
	  c_count[i]=shape[i];
      }
      c_count_all=len;
      break;
  default:
      Check_Type(end,T_ARRAY);
      if(RARRAY_LEN(end) < ndims) {
	  rb_raise(rb_eNetcdfError, "Length of 'end' is too short\n");
      }
      for(i=0; i<ndims; i++){
	  l_end=NUM2INT(RARRAY_PTR(end)[ndims-1-i]);
	  if(l_end < 0) {
	      status = nc_inq_dimlen(ncid, dimids[i], &dimlen);
	      if(status != NC_NOERR) NC_RAISE(status);
	      l_end += dimlen;
	  }
	  c_count[i]=(l_end-c_start[i])/c_stride[i]+1;
	  c_count_all=c_count[i]*c_count_all;
      }
      if(len == 1 && len != c_count_all){
	  scalar = *ptr;
	  ptr = ALLOCA_N(unsigned char,c_count_all);
	  for(i=0;i<c_count_all;i++){ptr[i]=scalar;}
      } else if(len != c_count_all) {
	rb_raise(rb_eNetcdfError,
		 "lengh of the array does not agree with that of the subset\n");
      }
  }

  status = nc_put_vars_uchar(ncid,varid,c_start,c_count,c_stride,ptr);
  if(status != NC_NOERR) NC_RAISE(status);
  return Qnil;
}

#put_vars_char(NArray, start, end, stride) ⇒ Object 



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# File 'ext/numru/netcdfraw.c', line 3886

VALUE
NetCDF_put_vars_char(VALUE Var,VALUE NArray,VALUE start,VALUE end,VALUE stride)
{
  int ncid;
  int varid;
  int status;
  unsigned char *ptr,scalar;
  na_shape_t len;
  int c_count_all=1;
  struct NetCDFVar *Netcdf_var;
  na_shape_t l_start, l_end;
  size_t *c_start;
  size_t *c_count;
  ptrdiff_t *c_stride;
  int ndims,i;
  na_shape_t *shape;
  int   *dimids;
  size_t dimlen;

  Data_Get_Struct(Var,struct NetCDFVar,Netcdf_var);
  ncid=Netcdf_var->ncid;
  varid=Netcdf_var->varid;
  status = nc_inq_varndims(ncid, varid, &ndims);
  if(status != NC_NOERR) NC_RAISE(status);

  dimids=ALLOCA_N(int,ndims);
  status = nc_inq_vardimid(ncid, varid, dimids);
  if(status != NC_NOERR) NC_RAISE(status);

  Check_Type(start,T_ARRAY);
  if(RARRAY_LEN(start) < ndims) {
      rb_raise(rb_eNetcdfError, "Length of 'start' is too short\n");
  }
  c_start=ALLOCA_N(size_t,ndims);
  for(i=0; i<ndims; i++){
    l_start=NUM2INT(RARRAY_PTR(start)[ndims-1-i]);

    if(l_start < 0) {
	status = nc_inq_dimlen(ncid, dimids[i], &dimlen);
	if(status != NC_NOERR) NC_RAISE(status);
	l_start += dimlen;
    }
    c_start[i]=l_start;
  }

  c_stride=ALLOCA_N(ptrdiff_t,ndims);
  switch(TYPE(stride)){
  case T_NIL:
      for(i=0; i<ndims; i++){
	  c_stride[i]=1;
      }
      break;
  default:
      Check_Type(stride,T_ARRAY);
      if(RARRAY_LEN(stride) < ndims) {
	  rb_raise(rb_eNetcdfError, "Length of 'stride' is too short\n");
      }
      for(i=0; i<ndims; i++){
	  c_stride[i]=NUM2INT(RARRAY_PTR(stride)[ndims-1-i]);
	  if(c_stride[i]==0) {
	      rb_raise(rb_eNetcdfError, "stride cannot be zero\n");
	  }
      }
  }

  Array_to_Cbyte_len_shape(NArray,ptr,len,shape);

  c_count=ALLOCA_N(size_t,ndims);
  switch(TYPE(end)){
  case T_NIL:
      for(i=0; i<ndims; i++){
	  c_count[i]=shape[i];
      }
      c_count_all=len;
      break;
  default:
      Check_Type(end,T_ARRAY);
      if(RARRAY_LEN(end) < ndims) {
	  rb_raise(rb_eNetcdfError, "Length of 'end' is too short\n");
      }
      for(i=0; i<ndims; i++){
	  l_end=NUM2INT(RARRAY_PTR(end)[ndims-1-i]);
	  if(l_end < 0) {
	      status = nc_inq_dimlen(ncid, dimids[i], &dimlen);
	      if(status != NC_NOERR) NC_RAISE(status);
	      l_end += dimlen;
	  }
	  c_count[i]=(l_end-c_start[i])/c_stride[i]+1;
	  c_count_all=c_count[i]*c_count_all;
      }
      if(len == 1 && len != c_count_all){
	  scalar = *ptr;
	  ptr = ALLOCA_N(unsigned char,c_count_all);
	  for(i=0;i<c_count_all;i++){ptr[i]=scalar;}
      } else if(len != c_count_all) {
	rb_raise(rb_eNetcdfError,
		 "lengh of the array does not agree with that of the subset\n");
      }
  }

  status = nc_put_vars_text(ncid,varid,c_start,c_count,c_stride,(char *)ptr);
  if(status != NC_NOERR) NC_RAISE(status);
  return Qnil;
}

#put_vars_float(NArray, start, end, stride) ⇒ Object 



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# File 'ext/numru/netcdfraw.c', line 4414

VALUE
NetCDF_put_vars_double(VALUE Var,VALUE NArray,VALUE start,VALUE end,VALUE stride)
{
  int ncid;
  int varid;
  int status;
  double *ptr,scalar;
  na_shape_t len;
  int c_count_all=1;
  struct NetCDFVar *Netcdf_var;
  na_shape_t l_start, l_end;
  size_t *c_start;
  size_t *c_count;
  ptrdiff_t *c_stride;
  int ndims,i;
  na_shape_t *shape;
  int   *dimids;
  size_t dimlen;

  Data_Get_Struct(Var,struct NetCDFVar,Netcdf_var);
  ncid=Netcdf_var->ncid;
  varid=Netcdf_var->varid;
  status = nc_inq_varndims(ncid, varid, &ndims);
  if(status != NC_NOERR) NC_RAISE(status);

  dimids=ALLOCA_N(int,ndims);
  status = nc_inq_vardimid(ncid, varid, dimids);
  if(status != NC_NOERR) NC_RAISE(status);

  Check_Type(start,T_ARRAY);
  if(RARRAY_LEN(start) < ndims) {
      rb_raise(rb_eNetcdfError, "Length of 'start' is too short\n");
  }
  c_start=ALLOCA_N(size_t,ndims);
  for(i=0; i<ndims; i++){
    l_start=NUM2INT(RARRAY_PTR(start)[ndims-1-i]);

    if(l_start < 0) {
	status = nc_inq_dimlen(ncid, dimids[i], &dimlen);
	if(status != NC_NOERR) NC_RAISE(status);
	l_start += dimlen;
    }
    c_start[i]=l_start;
  }

  c_stride=ALLOCA_N(ptrdiff_t,ndims);
  switch(TYPE(stride)){
  case T_NIL:
      for(i=0; i<ndims; i++){
	  c_stride[i]=1;
      }
      break;
  default:
      Check_Type(stride,T_ARRAY);
      if(RARRAY_LEN(stride) < ndims) {
	  rb_raise(rb_eNetcdfError, "Length of 'stride' is too short\n");
      }
      for(i=0; i<ndims; i++){
	  c_stride[i]=NUM2INT(RARRAY_PTR(stride)[ndims-1-i]);
	  if(c_stride[i]==0) {
	      rb_raise(rb_eNetcdfError, "stride cannot be zero\n");
	  }
      }
  }

  Array_to_Cdouble_len_shape(NArray,ptr,len,shape);

  c_count=ALLOCA_N(size_t,ndims);
  switch(TYPE(end)){
  case T_NIL:
      for(i=0; i<ndims; i++){
	  c_count[i]=shape[i];
      }
      c_count_all=len;
      break;
  default:
      Check_Type(end,T_ARRAY);
      if(RARRAY_LEN(end) < ndims) {
	  rb_raise(rb_eNetcdfError, "Length of 'end' is too short\n");
      }
      for(i=0; i<ndims; i++){
	  l_end=NUM2INT(RARRAY_PTR(end)[ndims-1-i]);
	  if(l_end < 0) {
	      status = nc_inq_dimlen(ncid, dimids[i], &dimlen);
	      if(status != NC_NOERR) NC_RAISE(status);
	      l_end += dimlen;
	  }
	  c_count[i]=(l_end-c_start[i])/c_stride[i]+1;
	  c_count_all=c_count[i]*c_count_all;
      }
      if(len == 1 && len != c_count_all){
	  scalar = *ptr;
	  ptr = ALLOCA_N(double,c_count_all);
	  for(i=0;i<c_count_all;i++){ptr[i]=scalar;}
      } else if(len != c_count_all) {
	  rb_raise(rb_eNetcdfError,
              "lengh of the array does not agree with that of the subset\n");
      }
  }

  status = nc_put_vars_double(ncid,varid,c_start,c_count,c_stride,ptr);
  if(status != NC_NOERR) NC_RAISE(status);
  return Qnil;
}

#put_vars_int(NArray, start, end, stride) ⇒ Object 



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# File 'ext/numru/netcdfraw.c', line 4202

VALUE
NetCDF_put_vars_int(VALUE Var,VALUE NArray,VALUE start,VALUE end,VALUE stride)
{
  int ncid;
  int varid;
  int status;
  int *ptr,scalar;
  na_shape_t len;
  int c_count_all=1;
  struct NetCDFVar *Netcdf_var;
  na_shape_t l_start, l_end;
  size_t *c_start;
  size_t *c_count;
  ptrdiff_t *c_stride;
  int ndims,i;
  na_shape_t *shape;
  int   *dimids;
  size_t dimlen;

  Data_Get_Struct(Var,struct NetCDFVar,Netcdf_var);
  ncid=Netcdf_var->ncid;
  varid=Netcdf_var->varid;
  status = nc_inq_varndims(ncid, varid, &ndims);
  if(status != NC_NOERR) NC_RAISE(status);

  dimids=ALLOCA_N(int,ndims);
  status = nc_inq_vardimid(ncid, varid, dimids);
  if(status != NC_NOERR) NC_RAISE(status);

  Check_Type(start,T_ARRAY);
  if(RARRAY_LEN(start) < ndims) {
      rb_raise(rb_eNetcdfError, "Length of 'start' is too short\n");
  }
  c_start=ALLOCA_N(size_t,ndims);
  for(i=0; i<ndims; i++){
    l_start=NUM2INT(RARRAY_PTR(start)[ndims-1-i]);

    if(l_start < 0) {
	status = nc_inq_dimlen(ncid, dimids[i], &dimlen);
	if(status != NC_NOERR) NC_RAISE(status);
	l_start += dimlen;
    }
    c_start[i]=l_start;
  }

  c_stride=ALLOCA_N(ptrdiff_t,ndims);
  switch(TYPE(stride)){
  case T_NIL:
      for(i=0; i<ndims; i++){
	  c_stride[i]=1;
      }
      break;
  default:
      Check_Type(stride,T_ARRAY);
      if(RARRAY_LEN(stride) < ndims) {
	  rb_raise(rb_eNetcdfError, "Length of 'stride' is too short\n");
      }
      for(i=0; i<ndims; i++){
	  c_stride[i]=NUM2INT(RARRAY_PTR(stride)[ndims-1-i]);
	  if(c_stride[i]==0) {
	      rb_raise(rb_eNetcdfError, "stride cannot be zero\n");
	  }
      }
  }

  Array_to_Clint_len_shape(NArray,ptr,len,shape);

  c_count=ALLOCA_N(size_t,ndims);
  switch(TYPE(end)){
  case T_NIL:
      for(i=0; i<ndims; i++){
	  c_count[i]=shape[i];
      }
      c_count_all=len;
      break;
  default:
      Check_Type(end,T_ARRAY);
      if(RARRAY_LEN(end) < ndims) {
	  rb_raise(rb_eNetcdfError, "Length of 'end' is too short\n");
      }
      for(i=0; i<ndims; i++){
	  l_end=NUM2INT(RARRAY_PTR(end)[ndims-1-i]);
	  if(l_end < 0) {
	      status = nc_inq_dimlen(ncid, dimids[i], &dimlen);
	      if(status != NC_NOERR) NC_RAISE(status);
	      l_end += dimlen;
	  }
	  c_count[i]=(l_end-c_start[i])/c_stride[i]+1;
	  c_count_all=c_count[i]*c_count_all;
      }
      if(len == 1 && len != c_count_all){
	  scalar = *ptr;
	  ptr = ALLOCA_N(int,c_count_all);
	  for(i=0;i<c_count_all;i++){ptr[i]=scalar;}
      } else if(len != c_count_all) {
	  rb_raise(rb_eNetcdfError,
              "length of the array does not agree with that of the subset\n");
      }
  }

  status = nc_put_vars_int(ncid,varid,c_start,c_count,c_stride,ptr);
  if(status != NC_NOERR) NC_RAISE(status);
  return Qnil;
}

#put_vars_sfloat(NArray, start, end, stride) ⇒ Object 



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# File 'ext/numru/netcdfraw.c', line 4308

VALUE
NetCDF_put_vars_float(VALUE Var,VALUE NArray,VALUE start,VALUE end,VALUE stride)
{
  int ncid;
  int varid;
  int status;
  float *ptr,scalar;
  na_shape_t len;
  int c_count_all=1;
  struct NetCDFVar *Netcdf_var;
  na_shape_t l_start, l_end;
  size_t *c_start;
  size_t *c_count;
  ptrdiff_t *c_stride;
  int ndims,i;
  na_shape_t *shape;
  int   *dimids;
  size_t dimlen;

  Data_Get_Struct(Var,struct NetCDFVar,Netcdf_var);
  ncid=Netcdf_var->ncid;
  varid=Netcdf_var->varid;
  status = nc_inq_varndims(ncid, varid, &ndims);
  if(status != NC_NOERR) NC_RAISE(status);

  dimids=ALLOCA_N(int,ndims);
  status = nc_inq_vardimid(ncid, varid, dimids);
  if(status != NC_NOERR) NC_RAISE(status);

  Check_Type(start,T_ARRAY);
  if(RARRAY_LEN(start) < ndims) {
      rb_raise(rb_eNetcdfError, "Length of 'start' is too short\n");
  }
  c_start=ALLOCA_N(size_t,ndims);
  for(i=0; i<ndims; i++){
    l_start=NUM2INT(RARRAY_PTR(start)[ndims-1-i]);

    if(l_start < 0) {
	status = nc_inq_dimlen(ncid, dimids[i], &dimlen);
	if(status != NC_NOERR) NC_RAISE(status);
	l_start += dimlen;
    }
    c_start[i]=l_start;
  }

  c_stride=ALLOCA_N(ptrdiff_t,ndims);
  switch(TYPE(stride)){
  case T_NIL:
      for(i=0; i<ndims; i++){
	  c_stride[i]=1;
      }
      break;
  default:
      Check_Type(stride,T_ARRAY);
      if(RARRAY_LEN(stride) < ndims) {
	  rb_raise(rb_eNetcdfError, "Length of 'stride' is too short\n");
      }
      for(i=0; i<ndims; i++){
	  c_stride[i]=NUM2INT(RARRAY_PTR(stride)[ndims-1-i]);
	  if(c_stride[i]==0) {
	      rb_raise(rb_eNetcdfError, "stride cannot be zero\n");
	  }
      }
  }

  Array_to_Cfloat_len_shape(NArray,ptr,len,shape);

  c_count=ALLOCA_N(size_t,ndims);
  switch(TYPE(end)){
  case T_NIL:
      for(i=0; i<ndims; i++){
	  c_count[i]=shape[i];
      }
      c_count_all=len;
      break;
  default:
      Check_Type(end,T_ARRAY);
      if(RARRAY_LEN(end) < ndims) {
	  rb_raise(rb_eNetcdfError, "Length of 'end' is too short\n");
      }
      for(i=0; i<ndims; i++){
	  l_end=NUM2INT(RARRAY_PTR(end)[ndims-1-i]);
	  if(l_end < 0) {
	      status = nc_inq_dimlen(ncid, dimids[i], &dimlen);
	      if(status != NC_NOERR) NC_RAISE(status);
	      l_end += dimlen;
	  }
	  c_count[i]=(l_end-c_start[i])/c_stride[i]+1;
	  c_count_all=c_count[i]*c_count_all;
      }
      if(len == 1 && len != c_count_all){
	  scalar = *ptr;
	  ptr = ALLOCA_N(float,c_count_all);
	  for(i=0;i<c_count_all;i++){ptr[i]=scalar;}
      } else if(len != c_count_all) {
	  rb_raise(rb_eNetcdfError,
              "lengh of the array does not agree with that of the subset\n");
      }
  }

  status = nc_put_vars_float(ncid,varid,c_start,c_count,c_stride,ptr);
  if(status != NC_NOERR) NC_RAISE(status);
  return Qnil;
}

#put_vars_sint(NArray, start, end, stride) ⇒ Object 



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# File 'ext/numru/netcdfraw.c', line 4096

VALUE
NetCDF_put_vars_sint(VALUE Var,VALUE NArray,VALUE start,VALUE end,VALUE stride)
{
  int ncid;
  int varid;
  int status;
  short *ptr,scalar;
  na_shape_t len;
  int c_count_all=1;
  struct NetCDFVar *Netcdf_var;
  na_shape_t l_start, l_end;
  size_t *c_start;
  size_t *c_count;
  ptrdiff_t *c_stride;
  int ndims,i;
  na_shape_t *shape;
  int   *dimids;
  size_t dimlen;

  Data_Get_Struct(Var,struct NetCDFVar,Netcdf_var);
  ncid=Netcdf_var->ncid;
  varid=Netcdf_var->varid;
  status = nc_inq_varndims(ncid, varid, &ndims);
  if(status != NC_NOERR) NC_RAISE(status);

  dimids=ALLOCA_N(int,ndims);
  status = nc_inq_vardimid(ncid, varid, dimids);
  if(status != NC_NOERR) NC_RAISE(status);

  Check_Type(start,T_ARRAY);
  if(RARRAY_LEN(start) < ndims) {
      rb_raise(rb_eNetcdfError, "Length of 'start' is too short\n");
  }
  c_start=ALLOCA_N(size_t,ndims);
  for(i=0; i<ndims; i++){
    l_start=NUM2INT(RARRAY_PTR(start)[ndims-1-i]);

    if(l_start < 0) {
	status = nc_inq_dimlen(ncid, dimids[i], &dimlen);
	if(status != NC_NOERR) NC_RAISE(status);
	l_start += dimlen;
    }
    c_start[i]=l_start;
  }

  c_stride=ALLOCA_N(ptrdiff_t,ndims);
  switch(TYPE(stride)){
  case T_NIL:
      for(i=0; i<ndims; i++){
	  c_stride[i]=1;
      }
      break;
  default:
      Check_Type(stride,T_ARRAY);
      if(RARRAY_LEN(stride) < ndims) {
	  rb_raise(rb_eNetcdfError, "Length of 'stride' is too short\n");
      }
      for(i=0; i<ndims; i++){
	  c_stride[i]=NUM2INT(RARRAY_PTR(stride)[ndims-1-i]);
	  if(c_stride[i]==0) {
	      rb_raise(rb_eNetcdfError, "stride cannot be zero\n");
	  }
      }
  }

  Array_to_Csint_len_shape(NArray,ptr,len,shape);

  c_count=ALLOCA_N(size_t,ndims);
  switch(TYPE(end)){
  case T_NIL:
      for(i=0; i<ndims; i++){
	  c_count[i]=shape[i];
      }
      c_count_all=len;
      break;
  default:
      Check_Type(end,T_ARRAY);
      if(RARRAY_LEN(end) < ndims) {
	  rb_raise(rb_eNetcdfError, "Length of 'end' is too short\n");
      }
      for(i=0; i<ndims; i++){
	  l_end=NUM2INT(RARRAY_PTR(end)[ndims-1-i]);
	  if(l_end < 0) {
	      status = nc_inq_dimlen(ncid, dimids[i], &dimlen);
	      if(status != NC_NOERR) NC_RAISE(status);
	      l_end += dimlen;
	  }
	  c_count[i]=(l_end-c_start[i])/c_stride[i]+1;
	  c_count_all=c_count[i]*c_count_all;
      }
      if(len == 1 && len != c_count_all){
	  scalar = *ptr;
	  ptr = ALLOCA_N(short,c_count_all);
	  for(i=0;i<c_count_all;i++){ptr[i]=scalar;}
      } else if(len != c_count_all) {
	  rb_raise(rb_eNetcdfError,
              "lengh of the array does not agree with that of the subset\n");
      }
  }

  status = nc_put_vars_short(ncid,varid,c_start,c_count,c_stride,ptr);
  if(status != NC_NOERR) NC_RAISE(status);
  return Qnil;
}

#put_with_miss(data, *args) ⇒ Object 



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# File 'lib/numru/netcdf_miss.rb', line 45

def put_with_miss(data, *args)
  if data.is_a?( NArrayMiss )
	__interpret_missing_params if !defined?(@missval)
	if @missval
	  simple_put(data.to_na(@missval), *args)
	else
	  simple_put(data.to_na, *args)
	end
  else
	simple_put(data, *args)
  end
end

#put_with_miss_and_scaling(data, *args) ⇒ Object 



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# File 'lib/numru/netcdf_miss.rb', line 58

def put_with_miss_and_scaling(data, *args)
  if data.is_a?( NArrayMiss )
	__interpret_missing_params if !defined?(@missval)
	if @missval
	  data = pack( data )
	  data = data.to_na(@missval)
	else
	  data = pack( data )
	  data = data.to_na
	end
	simple_put(data, *args)
  else
	scaled_put(data, *args)
  end
end

#scaled_get(hash = nil) ⇒ Object 



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# File 'lib/numru/netcdf.rb', line 430

def scaled_get(hash=nil)
  unpack( simple_get(hash) )
end

#scaled_put(var, hash = nil) ⇒ Object 



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# File 'lib/numru/netcdf.rb', line 377

def scaled_put(var,hash=nil)
  simple_put( pack(var), hash)
end

#shape_current ⇒ Object 



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# File 'lib/numru/netcdf.rb', line 331

def shape_current
  sh = []
  dims.each{|d|
    sh.push(d.length)
  }
  sh
end

#shape_ul0 ⇒ Object 



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# File 'lib/numru/netcdf.rb', line 319

def shape_ul0
  sh = []
  dims.each{|d|
    if d.unlimited? then
      sh.push(0)
    else
      sh.push(d.length)
    end
  }
  sh
end

#simple_get(hash = nil) ⇒ Object Also known as: get 



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# File 'lib/numru/netcdf.rb', line 540

def simple_get(hash=nil)
  t_var = self.vartype
  if hash == nil
    if t_var == "char"
      get_var_char
    elsif t_var == "byte"
      get_var_byte
    elsif t_var == "sint"
      get_var_sint
    elsif t_var == "int"
      get_var_int
    elsif t_var == "sfloat"
      get_var_sfloat
    elsif t_var == "float"
      get_var_float
    else
      raise NetcdfError, "variable type #{t_var} isn't supported in netCDF"
    end
  elsif hash.key?("index")==true
    ind = hash["index"]
    if t_var == "char"
      get_var1_char(ind)
    elsif t_var == "byte"
      get_var1_byte(ind)
    elsif t_var == "sint"
      get_var1_sint(ind)
    elsif t_var == "int"
      get_var1_int(ind)
    elsif t_var == "sfloat"
      get_var1_sfloat(ind)
    elsif t_var == "float"
      get_var1_float(ind)
    else
      raise NetcdfError,"variable type #{t_var} isn't supported in netCDF"
    end
  elsif hash.key?("start")==true
    h_sta = hash["start"]
    h_end = hash["end"]     # can be nill
    h_str = hash["stride"]  # can be nill
    if NetCDF.nc4? && h_str && ((xstr=h_str[0]) != 1)
      # Tentative treatment for the very slow netcdf-4 reading with step.
      # Reading with step is generally slow with NetCDF 4, but it is
      # particularly so for the first dimension.
      # Ref: http://www.unidata.ucar.edu/mailing_lists/archives/netcdfgroup/2013/msg00311.html
      h_str[0] = 1
      nc4remedy = true
    else
      nc4remedy = false
    end
    if t_var == "char"
      v = get_vars_char(h_sta,h_end,h_str)
    elsif t_var == "byte"
      v = get_vars_byte(h_sta,h_end,h_str)
    elsif t_var == "sint"
      v = get_vars_sint(h_sta,h_end,h_str)
    elsif t_var == "int"
      v = get_vars_int(h_sta,h_end,h_str)
    elsif t_var == "sfloat"
      v = get_vars_sfloat(h_sta,h_end,h_str)
    elsif t_var == "float"
      v = get_vars_float(h_sta,h_end,h_str)
    else
      raise NetcdfError, "variable type #{t_var} isn't supported in netCDF"
    end
    if nc4remedy
      idx = []
      (0...v.shape[0]).step(xstr){|k| idx.push(k)}
      v = v[idx,false]
    end
    v
  else
    raise ArgumentError,"{'start'}=>{ARRAY} or {'index'}=>{ARRAY} is needed"
  end
end

#simple_put(var, hash = nil) ⇒ Object Also known as: put 



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# File 'lib/numru/netcdf.rb', line 434

def simple_put(var,hash=nil)
  if hash==nil
    if self.vartype == "char"
      put_var_char(var)
    elsif self.vartype == "byte"
      put_var_byte(var)
    elsif self.vartype == "sint"
      put_var_sint(var)
    elsif self.vartype == "int"
      put_var_int(var)
    elsif self.vartype == "sfloat"
      put_var_sfloat(var)
    elsif self.vartype == "float"
      put_var_float(var)
    else
      raise NetcdfError,"variable type isn't supported in netCDF"
    end
  elsif hash.key?("index")==true
    if self.vartype == "char"
      put_var1_char(var,hash["index"])
    elsif self.vartype=="byte"
      put_var1_byte(var,hash["index"])
    elsif self.vartype=="sint"
      put_var1_sint(var,hash["index"])
    elsif self.vartype == "int"
      put_var1_int(var,hash["index"])
    elsif self.vartype == "sfloat"
      put_var1_sfloat(var,hash["index"])
    elsif self.vartype == "float"
      put_var1_float(var,hash["index"])
    else
      raise NetcdfError,"variable type isn't supported in netCDF"
    end
  elsif hash.key?("start")==true
    if hash.key?("end")==false && hash.key?("stride")==false
      if self.vartype == "char"
        put_vars_char(var,hash["start"],nil,nil)
      elsif self.vartype=="byte"
        put_vars_byte(var,hash["start"],nil,nil)
      elsif self.vartype=="sint"
        put_vars_sint(var,hash["start"],nil,nil)
      elsif self.vartype=="int"
        put_vars_int(var,hash["start"],nil,nil)
      elsif self.vartype=="sfloat"
        put_vars_sfloat(var,hash["start"],nil,nil)
      elsif self.vartype=="float"
        put_vars_float(var,hash["start"],nil,nil)
      else
        raise NetcdfError, "variable type isn't supported in netCDF"
      end
    elsif hash.key?("end")==true && hash.key?("stride") == false
      if self.vartype == "char"
        put_vars_char(var,hash["start"],hash["end"],nil)
      elsif self.vartype=="byte"
        put_vars_byte(var,hash["start"],hash["end"],nil)
      elsif self.vartype=="sint"
        put_vars_sint(var,hash["start"],hash["end"],nil)
      elsif self.vartype=="int"
        put_vars_int(var,hash["start"],hash["end"],nil)
      elsif self.vartype == "sfloat"
        put_vars_sfloat(var,hash["start"],hash["end"],nil)
      elsif self.vartype =="float"
        put_vars_float(var,hash["start"],hash["end"],nil)
      else
        raise NetcdfError, "variable type isn't supported in netCDF"
      end
    elsif hash.key?("end")==false && hash.key?("stride")==true
      if self.vartype == "char"
        put_vars_char(var,hash["start"],nil,hash["stride"])
      elsif self.vartype=="byte"
        put_vars_byte(var,hash["start"],nil,hash["stride"])
      elsif self.vartype=="sint"
        put_vars_sint(var,hash["start"],nil,hash["stride"])
      elsif self.vartype=="int"
        put_vars_int(var,hash["start"],nil,hash["stride"])
      elsif self.vartype=="sfloat"
        put_vars_sfloat(var,hash["start"],nil,hash["stride"])
      elsif self.vartype=="float"
        put_vars_float(var,hash["start"],nil,hash["stride"])
      else
        raise NetcdfError, "variable type isn't supported in netCDF"
      end
    else hash.key?("end")==true && hash.key?("stride")==true
      if self.vartype == "char"
        put_vars_char(var,hash["start"],hash["end"],hash["stride"])
      elsif self.vartype=="byte"
        put_vars_byte(var,hash["start"],hash["end"],hash["stride"])
      elsif self.vartype=="sint"
        put_vars_sint(var,hash["start"],hash["end"],hash["stride"])
      elsif self.vartype=="int"
        put_vars_int(var,hash["start"],hash["end"],hash["stride"])
      elsif self.vartype=="sfloat"
        put_vars_sfloat(var,hash["start"],hash["end"],hash["stride"])
      elsif self.vartype=="float"
        put_vars_float(var,hash["start"],hash["end"],hash["stride"])
      else
        raise NetcdfError, "variable type isn't supported in netCDF"
      end
    end
  else
    raise ArgumentError,"{'start'}=>[ARRAY] or {'index'}=>[ARRAY] is needed"
  end
end

#typecode ⇒ Object 



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# File 'ext/numru/netcdfraw.c', line 1856

VALUE
NetCDF_var_typecode(VALUE Var)
{
  int ncid;
  int status;
  int varid;
  nc_type xtypep;
  struct NetCDFVar *Netcdf_var;

  Data_Get_Struct(Var,struct NetCDFVar,Netcdf_var);

  ncid=Netcdf_var->ncid;
  varid=Netcdf_var->varid;

  status = nc_inq_vartype(ncid,varid,&xtypep);
  if(status != NC_NOERR) NC_RAISE(status);

  return(INT2NUM(nctype2natypecode(xtypep)));
}

#unpack(na) ⇒ Object 



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# File 'lib/numru/netcdf.rb', line 397

def unpack(na)
  sf = att('scale_factor')
  ao = att('add_offset')
  if ( sf == nil && ao == nil ) then
    na
  else
    if sf
      csf = sf.get
      raise NetcdfError,"scale_factor is not a numeric" if csf.is_a?(String)
      raise NetcdfError, "scale_factor is not unique" if csf.length != 1
      raise NetcdfError, "zero scale_factor" if csf[0] == 0
    else
      csf =nil
    end
    if ao
      cao = ao.get
      raise NetcdfError, "add_offset is not a numeric" if cao.is_a?(String)
      raise NetcdfError, "add_offset is not unique" if cao.length != 1
    else
      cao = nil
    end
    if csf and cao
      una = na * csf + cao  # csf & cao are NArray -> coerced to their types
    elsif csf
      una = na * csf
    elsif cao
      una = na + cao
    end
    una = una.to_type(@@unpack_type) if @@unpack_type
    una
  end
end

#vartype ⇒ Object 



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# File 'ext/numru/netcdfraw.c', line 1834

VALUE
NetCDF_var_vartype(VALUE Var)
{
  int ncid;
  int status;
  int varid;
  nc_type xtypep;
  struct NetCDFVar *Netcdf_var;
  const char *Vartype;

  Data_Get_Struct(Var,struct NetCDFVar,Netcdf_var);

  ncid=Netcdf_var->ncid;
  varid=Netcdf_var->varid;

  status = nc_inq_vartype(ncid,varid,&xtypep);
  if(status != NC_NOERR) NC_RAISE(status);

  Vartype=nctype2natype(xtypep);
  return(rb_str_new2(Vartype));
}