Class: EvoSynth::Output::GnuPlotExporter

Inherits:
Object
  • Object
show all
Defined in:
lib/evosynth/output/exporter/gnuplot_exporter.rb

Overview

exports the contents (data) of a logger to gnuplot

Instance Method Summary collapse

Constructor Details

#initialize(logger) ⇒ GnuPlotExporter 



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# File 'lib/evosynth/output/exporter/gnuplot_exporter.rb', line 35

def initialize(logger)
  begin
    require 'gnuplot'
  rescue
    puts "Could not require 'gnuplot' gem, please install with gem install gnuplot"
  end

  @logger = logger
end

Instance Method Details

#export(title) ⇒ Object 



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# File 'lib/evosynth/output/exporter/gnuplot_exporter.rb', line 45

def export(title)
  begin
    Gnuplot.open do |gp|
      Gnuplot::Plot.new( gp ) do |plot|

        plot.title  title
        # plot.ylabel "fitness"
        # plot.xlabel "generation"

        x, ys = [], []
        data_sets = 0
        @logger.data.each_pair do |key, value|
          data_sets = value.size if value.size > data_sets
          x << key
          value.each_with_index do |y, index|
            ys[index] = [] if ys[index].nil?
            ys[index] << y
          end
        end

        data_sets.times do |set|
          plot.data << Gnuplot::DataSet.new( [x, ys[set]] ) do |ds|
            ds.with = "lines"
            ds.title = @logger.column_names[set]
          end
        end
      end
    end
  rescue
    puts "Could not run gnuplot - have you gnuplot installed? It does not work on windows yet!"
  end
end