Class: Graph::Function::Comparison

Inherits:
Object
  • Object
show all
Includes:
PlotConfig, ReformatString
Defined in:
lib/graph/function/comparison.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from PlotConfig

#set_up

Methods included from ReformatString

#camel_title, #escape_underscores

Constructor Details

#initialize(generator) ⇒ Comparison

Returns a new instance of Comparison.



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# File 'lib/graph/function/comparison.rb', line 8

def initialize(generator)
  @data_generator = generator
end

Instance Attribute Details

#data_generator ⇒ Object

Returns the value of attribute data_generator.



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# File 'lib/graph/function/comparison.rb', line 6

def data_generator
  @data_generator
end

Instance Method Details

#of(*methods) ⇒ Object 



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# File 'lib/graph/function/comparison.rb', line 12

def of(*methods)
  fail unless methods.all? {|m| m.is_a?(Method) }

  methods.each do |m|
    self.class.send(:define_method, m.name, proc(&m))
  end

  Gnuplot.open do |gp|
    Gnuplot::Plot.new(gp) do |plot|

      plot.title  "#{title = methods.map {|m| camel_title(m.name) }.join(', ') }"
set_up(plot)

      x = Graph::Function.configuration.step
      pb = ProgressBar.create(title: title, total: x.size)

      methods.each do |m|
        pb.reset
        y = x.collect do |v|
          pb.increment
          data = data_generator.call(v)
          # FIXME can i get ride of the cost of `send`?
          Benchmark.measure { self.send(m.name, data) }.real
        end

        plot.data << Gnuplot::DataSet.new( [x, y] ) do |ds|
          ds.with = "linespoints"
          ds.title = "#{escape_underscores(m.name)}"
        end
      end
    end
  end
end