Class: Evoasm::Population::Plotter

Inherits:
Object
  • Object
show all
Defined in:
lib/evoasm/population/plotter.rb

Overview

Visualizes the population loss functions using Gnuplot

Constant Summary

MAX_SAMPLE_COUNT = 
16

Instance Method Summary collapse

Constructor Details

#initialize(population, filename = nil) ⇒ Plotter

Returns a new instance of Plotter

Parameters:

  • population (Population) —

    the population to plot



18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
 
# File 'lib/evoasm/population/plotter.rb', line 18

def initialize(population, filename = nil)
  @population = population

  @pipe = self.class.__open__

  if filename
    case filename
    when /\.gif$/
      @pipe.puts 'set term gif animate delay 20 size 1280, 1024 crop'
      @pipe.puts %Q{set output "#{filename}"}
    else
      raise ArgumentError, "unknown output filetype"
    end
  end

  @pipe.puts 'set xtics'
  @pipe.puts 'set ytics'
  @pipe.puts 'set grid'
  @pipe.puts 'set style fill transparent solid 0.2 noborder'
  @pipe.puts 'set datafile missing "Infinity"'
  @pipe.puts 'set lmargin 0.5'
  @pipe.puts 'set rmargin 0.5'
  @pipe.puts 'set tmargin 0.5'
  @pipe.puts 'set bmargin 0.5'

  @deme_count = @population.parameters.deme_count
  @sample_tail = 0
  @sample_count = 0
  @data = Array.new(@deme_count) { Array.new MAX_SAMPLE_COUNT }
end

Instance Method Details

#plot ⇒ void

This method returns an undefined value.

Plots (or replots) the current data points



65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
 
# File 'lib/evoasm/population/plotter.rb', line 65

def plot
  @pipe.puts "set multiplot layout 1, #{@deme_count}"

  key = true

  @deme_count.times do |deme_index|
    deme_summary = @data[deme_index]

    @pipe.puts "set key #{key ? 'on' : 'off'}"
    key = false
    @pipe.write %Q{plot '-' using 1:2:3 with filledcurves title 'IQR'}
    @pipe.write %Q{    ,'-' using 1:2 with lp title 'Min'}
    @pipe.write %Q{    ,'-' using 1:2:(sprintf("%.2f", $2)) with labels center offset 2,0.6 notitle}
    @pipe.write %Q{    ,'-' using 1:2 with lp lt 1 pt 5 ps 1.5 lw 2 title 'Median'}
    @pipe.write %Q{    ,'-' using 1:2:(sprintf("%.2f", $2)) with labels center offset 2,1 notitle}
    @pipe.puts

    write_samples deme_summary, 0, 2, 4

    write_samples deme_summary, 0, 1
    write_samples deme_summary, 0, 1

    write_samples deme_summary, 0, 3
    write_samples deme_summary, 0, 3
  end
  @pipe.puts "unset multiplot"
  @pipe.flush
end

#update ⇒ nil

Updates data points

Returns:

  • (nil) 


51
52
53
54
55
56
57
58
59
60
61
 
# File 'lib/evoasm/population/plotter.rb', line 51

def update
  summary = @population.summary

  summary.each_with_index do |deme_summary, deme_index|
    deme_samples = @data[deme_index]
    deme_samples[@sample_tail] = [@population.generation] + deme_summary
  end

  @sample_count = [@sample_count + 1, MAX_SAMPLE_COUNT].min
  @sample_tail = (@sample_tail + 1) % MAX_SAMPLE_COUNT
end