Class: Numo::Gnuplot::PlotItem

Inherits:
Object
  • Object
show all
Defined in:
lib/numo/gnuplot.rb

Direct Known Subclasses

SPlotItem

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(*items) ⇒ PlotItem

Returns a new instance of PlotItem.


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# File 'lib/numo/gnuplot.rb', line 700

def initialize(*items)
  @items = items
end

Class Method Details

.is_data(a) ⇒ Object


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# File 'lib/numo/gnuplot.rb', line 670

def self.is_data(a)
  if a.kind_of? Array
    if a.last.kind_of?(Hash)
      return false
    else
      t = a.first.class
      t = Numeric if t < Numeric
      return a.all?{|e| e.kind_of?(t)}
    end
  end
  if defined?(Numo::NArray)
    return true if a.kind_of?(Numo::NArray)
  end
  if defined?(::NArray)
    return true if a.kind_of?(::NArray)
  end
  if defined?(::NMatrix)
    return true if a.kind_of?(::NMatrix)
  end
  case a[a.size-1] # quick check for unknown data class
  when Numeric
    return true if a[0].kind_of?(Numeric)
  when String
    return true if a[0].kind_of?(String)
  end
  false
rescue
  false
end

Instance Method Details

#<<(item) ⇒ Object


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# File 'lib/numo/gnuplot.rb', line 704

def <<(item)
  @items << item
end

#cmd_strObject


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# File 'lib/numo/gnuplot.rb', line 768

def cmd_str
  parse_items
  if @function
    "%s %s" % [@function, OptArg.parse(*@options)]
  else
    "%s %s" % [@data.cmd_str, OptArg.parse(*@options)]
  end
end

#data_strObject


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# File 'lib/numo/gnuplot.rb', line 777

def data_str
  parse_items
  if @function
    nil
  else
    @data.data_str
  end
end

#empty?Boolean

Returns:

  • (Boolean)

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# File 'lib/numo/gnuplot.rb', line 708

def empty?
  @items.empty?
end

#parse_data(data) ⇒ Object


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# File 'lib/numo/gnuplot.rb', line 764

def parse_data(data)
  parse_data_style(data) || PlotData.new(*data)
end

#parse_data_style(data) ⇒ Object


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# File 'lib/numo/gnuplot.rb', line 751

def parse_data_style(data)
  if @style
    re = /^#{@style}/
    if re =~ "image"
      return ImageData.new(*data)
    elsif re =~ "rgbimage"
      return RgbImageData.new(*data)
    elsif re =~ "rgbalpha"
      return RgbAlphaData.new(*data)
    end
  end
end

#parse_itemsObject


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# File 'lib/numo/gnuplot.rb', line 712

def parse_items
  if !@options
    if @items.empty?
      return
    elsif @items.first.kind_of?(String) || @items.first.kind_of?(Symbol)
      @function = @items.first
      @options = @items[1..-1]
      if (o=@items.last).kind_of? Hash
        if o.any?{|k,v| /^#{k}/ =~ "using"}
          # @function is data file
          @function = OptArg.quote(@function)
        end
      end
    else
      data = []
      @options = []
      @items.each do |x|
        if PlotItem.is_data(x)
          data << x
        else
          @options << x
          if x.kind_of? Hash
            x.each do |k,v|
              if /^#{k}/ =~ "with"
                @style = v; break;
              end
            end
          end
        end
      end
      if data.empty?
        @function = ''
      else
        @data = parse_data(data)
      end
    end
  end
end