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

Returns a new instance of 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