Class: GraphKit

Inherits:
KitHash show all
Includes:
Kit, Log
Defined in:
lib/graphkit.rb,
lib/graphkit/mm.rb,
lib/graphkit/csv.rb,
lib/graphkit/gnuplot.rb,
lib/graphkit/vtk_legacy_ruby.rb

Defined Under Namespace

Classes: AxisKit, DataError, DataKit, GnuplotPlotOptions, GnuplotSetOptions, GnuplotVariables, MultiWindow

Constant Summary collapse

AXES = 
[:x, :y, :z, :f]
DEFAULT_COLOURS = 
{0 => "#df0000", 1 => "#00df00", 2 => "#0000df", 3 => "#a000a0", 4 => "#0090a0", 5 => "#e59500", 7 => "#82c290", 8 => "#f76dba", 9 => "#c20f00", 10 => "#4f1099"}
DEFAULT_COLOURS_GNUPLOT = 
DEFAULT_COLOURS
DEFAULT_COLOURS_MATHEMATICA = 
DEFAULT_COLOURS.inject({}) do |hash, (i, coll)|
  hash[i] = coll.sub(/#/, '').scan(/.{2}/).map{|str| (eval("0x#{str}").to_f / 255.0).round(2)}
  hash  
end
GNUPLOT_DEFAULT_TERM = 
ENV['GRAPHKIT_TERM'] || "x11"
GNUPLOT_DEFAULT_COLOURS = 
{0 => "#df0000", 1 => "#00df00", 2 => "#0000df", 3 => "#a000a0", 4 => "#0090a0", 5 => "#e59500", 6 => "#82c290", 7 => "#f76dba", 8 => "#c20f00", 9 => "#4f1099"}
@@old_gnuplot_sets =

AXES.each do |axisname| [:name, :label, :units, :range].each do |option| define_method(axisname + option)[axisname] define_method(axisname + option + ‘=’.to_sym){|value| self[axisname] = value} end end

[ :dgrid3d, :title, :style, :term, :terminal, :pointsize, :log_axis, :key, :pm3d, :palette, :view, :cbrange, :contour, :nosurface, :cntrparam, :preamble, :xtics, :ytics]

Class Method Summary collapse

Instance Method Summary collapse

Methods included from Kit

#check, #method_missing

Methods inherited from KitHash

from_hash, #inspect

Methods inherited from Hash

#modify

Constructor Details

#initialize(naxes = 0, hash = {}) ⇒ GraphKit

Greate a new graphkit. Rarely used: see GraphKit.autocreate and GraphKit.quick_create



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# File 'lib/graphkit.rb', line 302

def initialize(naxes=0, hash = {})
  logf :initialize
  super()
  self[:naxes] = naxes 
  self[:data] = []
  hash
#     @gnuplot_options = GnuplotOptions.new
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method in the class Kit

Class Method Details

.autocreate(*hashes) ⇒ Object

Create a new graphkit with one hash for every datakit (each datakit corresponds to a line or surface on the graph). Each hash should contain specifications for the axes of the graph (see AxisKit#autocreate).

E.g. kit = GraphKit.autocreate( { x: [1,2,3], title ‘x’, units: ‘m’, y: [1,4,9], title ‘x^2’, units: ‘m^2’ } )

will create a two dimensional graph that plots x^2 against x.



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# File 'lib/graphkit.rb', line 333

def self.autocreate(*hashes)
  Log.logf :autocreate
  new(hashes[0].size).autocreate(*hashes)
end

.latex_multiplot(name, options = {}) ⇒ Object 



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# File 'lib/graphkit/gnuplot.rb', line 526

def self.latex_multiplot(name, options={})
  name = name.sub(/\.eps$/, '')
  figure_preamble = options[:preamble] || "\\\\documentclass[graphicx,reprint,twocolumn]{revtex4}\n%\\documentclass[aip,reprint]{revtex4-1}\n\\\\usepackage{graphics,bm,overpic,color}\n\\\\usepackage[tight]{subfigure}\n\n\\\\pagestyle{empty}\n\\\\begin{document}\n\\\\begin{figure}\n"

  figure_postamble = options[:postamble] || "\\\\end{figure}\n\\\\end{document}\n"
  text = "\#{figure_preamble}\n\#{yield}\n\#{figure_postamble}\n"
    File.open("#{name}.tex", 'w'){|f| f.puts text}
  raise 'latex failed'  unless system "latex #{name}.tex"
  raise 'dvips failed' unless system "dvips #{name}.dvi"
  FileUtils.rm "#{name}.eps" if FileTest.exist? "#{name}.eps"
  raise 'ps2eps failed' unless system "ps2eps #{name}.ps"
end

.quick_create(*datasets) ⇒ Object

Create a new graphkit without providing any labels.

E.g. kit = GraphKit.quick_create( [ [1,2,3], [1,4,9] ] )

will create a two dimensional graph that plots x^2 against x.



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# File 'lib/graphkit.rb', line 359

def self.quick_create(*datasets)
  hashes = datasets.map do |data|
    hash = {}
    data.each_with_index do |dat, i|
      hash[AXES[i]] = {data: dat}
    end
    hash
  end
  autocreate(*hashes)
end

Instance Method Details

#+(other) ⇒ Object

Combine with another graph; titles and labels from the first graph will override the second.



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# File 'lib/graphkit.rb', line 431

def +(other)
  check(['other.naxes', other.naxes, self.naxes])
  new = self.class.new(naxes)
  new.modify(other, [:data])
  new.modify(self, [:data])
  new.data = self.data + other.data
  new
end

#apply_gnuplot_options(options) ⇒ Object

Modify the graphkit according to the options hash



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# File 'lib/graphkit/gnuplot.rb', line 247

def apply_gnuplot_options(options)
  options = options.dup # No reason to modify the original hash
  logf :gnuplot
  processes = %x[ps | grep 'gnuplot'].scan(/^\s*\d+/).map{|match| match.to_i}
  if options[:outlier_tolerance]
    raise "Can only get rid of outliers for 1D or 2D data" if naxes > 2
    data.each do |datakit|
      datakit.outlier_tolerance = options[:outlier_tolerance]
#         datakit.calculate_outliers
      datakit.exclude_outliers
    end
    options.delete(:outlier_tolerance)
  end
  self.live = options[:live]
  options.delete(:live) if live
  if (self.view =~ /map/ or self.pm3d =~ /map/) and naxes < 4
    self.cbrange ||= self.zrange
    options[:cbrange] ||= options[:zrange] if options[:zrange]
  end
  if options[:eval]
    eval(options[:eval])
    options.delete(:eval)
  end
  options.each   do |k,v|
#             ep option, val if option == :xrange

        #           ep k, v
        set(k, v)
  end
end

#autocreate(*hashes) ⇒ Object

:nodoc: (see GraphKit.autocreate)



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# File 'lib/graphkit.rb', line 372

def autocreate(*hashes) # :nodoc:  (see GraphKit.autocreate)
  logf :autocreate
  hashes.each{|hash| data.push DataKit.autocreate(hash)}
#     pp data
  [:title, :label, :units, :range].each do |option| 
    data[0].axes.each do |key, axiskit|
#       next unless AXES.include? key
      self[key + option] = axiskit[option].dup if axiskit[option]
    end
  end
  self.title = data[0].title
  check_integrity
  self
end

#check_integrity ⇒ Object

Check that the graphkit conforms to specification; that the data has dimensions that make sense and that the titles and ranges have the right types.



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# File 'lib/graphkit.rb', line 389

def check_integrity
  logf :check_integrity
  check(['data.class', Array], ['title.class', [String, NilClass]], ['has_legend.class', [Hash, NilClass]])
  [[:units, [String, NilClass]], [:range, [Array, NilClass]], [:label, [String, NilClass]], [:title, [String, NilClass]]].each do |prop, klass|
#       next unless self[prop]
    AXES.each do |key|
#         p prop, klass
#         p instance_eval(prop.to_s + "[#{key.inspect}]"), 'ebb'
      check(["#{key + prop}.class", klass])
#         check(["a key from #{prop}", key, AXES + [:f]])
    end 
  end
  data.each do |datakit|
    check(['class of a member of the data array', datakit.class, DataKit])
    check(['datakit.axes.size', datakit.axes.size, naxes])
    datakit.check_integrity
  end
  return true
end

#close ⇒ Object 



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# File 'lib/graphkit/gnuplot.rb', line 344

def close
  logf :close
  begin
    #require 'sys/proctable'
    #p Sys::ProcTable.ps.select{ |pe| pe.ppid == pid }
    Process.kill('TERM', pid) if pid
  rescue => err
    puts err, pid
  end
  self.pid = nil
end

#convert(&block) ⇒ Object 



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# File 'lib/graphkit.rb', line 483

def convert(&block)
  #ep 'Converting graph...'
  kit = self.dup
  #p kit

  kit.data.map! do |dk|
    dk.convert(&block)
  end
  kit
end

#convert_rank!(from_to, options = {}) ⇒ Object

convert_rank!([, [1,1,2]])



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# File 'lib/graphkit.rb', line 501

def convert_rank!(from_to, options={})
  ep "Converting Rank"
  case from_to
  when [[1,1,1], [1,1,2]]
    dependent_dimension = options[:dd] || options[:dependent_dimension] || 2
    other_dims = [0,1,2] - [dependent_dimension]
    od0 = other_dims[0]
    od1 = other_dims[1]
    data.each do |dk|
      new_data = SparseTensor.new(2)
      od0_data = dk.axes[AXES[od0]].data.to_a.uniq.sort
      od1_data = dk.axes[AXES[od1]].data.to_a.uniq.sort

      for i in 0...dk.axes[:x].data.size
        od0_index = od0_data.index(dk.axes[AXES[od0]].data[i])
        od1_index = od1_data.index(dk.axes[AXES[od1]].data[i])
        new_data[[od0_index, od1_index]] = dk.axes[AXES[dependent_dimension]].data[i]
      end
      dk.axes[AXES[od0]].data = od0_data
      dk.axes[AXES[od1]].data = od1_data
      dk.axes[AXES[dependent_dimension]].data = new_data
    end

  else
    raise "Converting from #{from_to[0].inspect} to #{from_to[1].inspect} is not implemented yet."
  end
  eputs self.pretty_inspect
end

#dup ⇒ Object

Duplicate the graphkit.



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# File 'lib/graphkit.rb', line 423

def dup
  #logf :dup
  #self.class.new(naxes, self)
  eval(inspect)
end

#each_axiskit(*axes, &block) ⇒ Object 



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# File 'lib/graphkit.rb', line 453

def each_axiskit(*axes, &block)
  axes = AXES unless axes.size > 0
  axes.each do |axis|
    data.each do |datakit|
      yield(datakit.axes[axis])
    end
  end
end

#extend_using(other, mapping = nil) ⇒ Object 



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# File 'lib/graphkit.rb', line 440

def extend_using(other, mapping = nil)
  if mapping
    mapping.each do |mine, others|
      data[mine].extend_using(other.data[others])
    end
  else
    raise TypeError.new("A graph can only be extended by a graph with the same number of datasets unless a mapping is provided: this graph has #{data.size} and the other graph has #{other.data.size}") unless data.size == other.data.size
    data.each_with_index do |dataset, index|
      dataset.extend_using(other.data[index])
    end
  end
end

#gnuplot(options = {}) ⇒ Object 



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# File 'lib/graphkit/gnuplot.rb', line 299

def gnuplot(options={}) 
  apply_gnuplot_options(options)
  apply_graphkit_standard_options_to_gnuplot
  check_integrity
  if options[:io]
    send_gnuplot_commands(io)
  else
    Gnuplot.open(true) do |io|
        send_gnuplot_commands(io)
        (STDIN.gets) if live
    end
  end
end

#gnuplot_sets ⇒ Object Also known as: gp 



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# File 'lib/graphkit/gnuplot.rb', line 233

def gnuplot_sets
  # gnuplot_options included for back. comp
  self[:gnuplot_sets] ||= @gnuplot_options || GnuplotSetOptions.new
  self[:gnuplot_sets]
end

#gnuplot_variables ⇒ Object Also known as: gv 



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# File 'lib/graphkit/gnuplot.rb', line 240

def gnuplot_variables
  @gnuplot_variables ||= GnuplotVariables.new
end

#gnuplot_write(file_name, options = {}) ⇒ Object 



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# File 'lib/graphkit/gnuplot.rb', line 479

def gnuplot_write(file_name, options={})
  logf :gnuplot_write
  old_gp_term = gp.term
  old_gp_output = gp.output
  if file_name
    gp.output = file_name
    unless gp.term or options[:terminal]
      case File.extname(file_name)
      when '.pdf'
        gp.term = 'pdf size 20cm,15cm'
      when '.ps'
        gp.term = 'post color'
      when '.eps'
        unless options[:latex]
          gp.term = %[post eps color enhanced size  #{options[:size] or "3.5in,2.33in"}]
        else
          gp.term ||= "epslatex color dashed size #{options[:size] or "3.5in,#{options[:height] or "2.0in"}"} colortext standalone 8"
          (gp.term += " header '#{options[:preamble].inspect.gsub(/\\\n/, "\\\\\\n")}'"; options.delete(:preamble)) if options[:preamble]
        end
      when '.jpg'
        gp.term = "jpeg size  #{options[:size] or "3.5in,2.33in"}"
      when '.png'
        gp.term = "png size  #{options[:size] or "640,480"}"
      when '.gif'
        gp.term = "gif size  #{options[:size] or "640,480"}"
      
      end
    end
  end
  
  gp.output = file_name.sub(/\.eps/, '.tex') if options[:latex]
  options.delete(:size)
  gnuplot(options)
  if options[:latex]
      name = file_name.sub(/\.eps$/, '')
      raise "No file output by gnuplot" unless FileTest.exist? name + '.tex'
      raise 'latex failed' unless system "latex #{name}.tex --interaction nonstopmode --halt-on-error -q"
      raise 'dvips failed' unless system "dvips #{name}.dvi"
      FileUtils.rm "#{name}.eps" if FileTest.exist? "#{name}.eps"
      raise 'ps2eps failed' unless system "ps2eps #{name}.ps"
  end
#     ep file_name
   gp.term = old_gp_term
  gp.output = old_gp_output
  return File.basename(file_name, File.extname(file_name))
end

#lx(*args) ⇒ Object

:nodoc:



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# File 'lib/graphkit.rb', line 339

def lx(*args) # :nodoc:
  log_axis(*args)
end

#lx=(val) ⇒ Object

:nodoc: (deprecated)



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# File 'lib/graphkit.rb', line 343

def lx=(val) # :nodoc:  (deprecated)
  self.log_axis = val
end

#plot_area_size ⇒ Object 



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# File 'lib/graphkit.rb', line 462

def plot_area_size
  logf :plot_area_size
  shapes = data.map{|datakit| datakit.plot_area_size}.inject do |old,new|
    for i in 0...old.size
      old[i][0] = [old[i][0], new[i][0]].min
      old[i][1] = [old[i][1], new[i][1]].max
    end
    old
  end
  shapes

end

#send_gnuplot_commands(io) ⇒ Object 



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# File 'lib/graphkit/gnuplot.rb', line 313

def send_gnuplot_commands(io)
    self.pid = io.pid
    gnuplot_sets.apply(io)
    gnuplot_variables.apply(io)
    case naxes
    when 1,2
      io << "plot "
    when 3,4
      io << "splot "
    end
    imax = data.size - 1
    data.each_with_index do |dk,i|
      next if i>0 and compress_datakits
      dk.gnuplot_plot_options.with ||= dk.with #b.c.
      dk.gnuplot_plot_options.title ||= dk.title #b.c.
      dk.gnuplot_plot_options.apply(io)
      #p 'imax', imax, i, i == imax
      next if compress_datakits
      io << ", " unless i == imax
    end
    io << "\n"
    data.each_with_index do |dk,i|
      dk.gnuplot(io)
       unless compress_datakits and i<imax
        io << "e\n\n"
       else
         io << "\n\n"
       end
    end
end

#to_csv(options = {}) ⇒ Object 



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# File 'lib/graphkit/csv.rb', line 13

def to_csv(options={})  
  check_integrity
  ep 'to_csv'
  stringio = options[:io] || StringIO.new
  data.each do |dk|
    dk.to_csv(io: stringio)
    stringio <<  "\n\n"
  end
  return stringio.string unless options[:io]
end

#to_mathematica ⇒ Object

Convert graphkit into a string which can be used by Mathematica



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# File 'lib/graphkit/mm.rb', line 3

def to_mathematica
  str = ""
  case data[0].ranks
  when [1], [1, 1]
    str = "ListPlot[{#{data.map{|dk| dk.to_mathematica}.join(',')}}"


  end
  pas = plot_area_size
  if (xrange or yrange or zrange)
    str << ", PlotRange -> "
    str << "{#{((0...naxes).to_a.map do |nax| 
      ax = AXES[nax]
      specified_range = (send(ax + :range) or [nil, nil])
      "{#{specified_range.zip(pas[nax]).map{|spec, pasr| (spec or pasr).to_s}.join(',')}}"
    end).join(',')}}"
  end
  str << ", PlotStyle -> {#{(data.size.times.map do |i|
    ((data[i].mtm.plot_style) or "{}")
  end).join(',')}}"

  str << "]"

end

#to_vtk_legacy(options = {}) ⇒ Object 



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# File 'lib/graphkit/vtk_legacy_ruby.rb', line 17

def to_vtk_legacy(options={}) 
  check_integrity
  ep 'to_vtk_legacy'
  stringio = options[:io] || StringIO.new
   npoints = data.map{|dk| dk.vtk_legacy_size}.sum
  stringio << "# vtk DataFile Version 3.0\nvtk output\nASCII\nDATASET UNSTRUCTURED_GRID\nPOINTS \#{npoints} float\n"
  data.each do |dk|
    dk.vtk_legacy_points(io: stringio)
    #stringio <<  "\n\n"
  end
  #ncells = data.map{|dk| dk.vtk_legacy_cells(action: :count)}.sum
  #ncell_elements = data.map{|dk| dk.vtk_legacy_cells(action: :count_elements)}.sum
  cellstring = ""
  pc = 0
  data.each do |dk|
    cellstring += dk.vtk_legacy_cells pointcount: pc
    pc += dk.vtk_legacy_size
    #stringio <<  "\n\n"
  end
  ncells = cellstring.count("\n")
  ncell_elements = cellstring.scan(/\s+/).size
  stringio << "\nCELLS \#{ncells} \#{ncell_elements}\n"
  stringio << cellstring
  stringio << "\nCELL_TYPES \#{ncells}\n"
  data.each do |dk|
    dk.vtk_legacy_cell_types(io: stringio)
    #stringio <<  "\n\n"
  end
  stringio << "\nPOINT_DATA \#{npoints} \nSCALARS myvals float\nLOOKUP_TABLE default\n"
  data.each do |dk|
    dk.vtk_legacy_point_data(io: stringio)
    #stringio <<  "\n\n"
  end
  return stringio.string unless options[:io]
end

#to_vtk_legacy_fast(options = {}) ⇒ Object 



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# File 'lib/graphkit/vtk_legacy_ruby.rb', line 14

def to_vtk_legacy_fast(options={})
  File.open(options[:file_name], 'w'){|file| file.puts to_vtk_legacy}
end

#transpose! ⇒ Object 



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# File 'lib/graphkit.rb', line 475

def transpose!
  data.each do |datakit|
    datakit.transpose!
  end
  self.xlabel, self.ylabel = ylabel, xlabel
  self.xrange, self.yrange = xrange, yrange
end