Class: Graph::Function::Comparison

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

Direct Known Subclasses

IntsComparison

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from PlotConfig

#set_up

Methods included from ReformatString

#camel_title, #escape_underscores, #extract_filename

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(*functions) ⇒ Object 



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

def of(*functions)
  fail unless functions.all? {|f| f.respond_to?(:call) }

  results = {}

  Gnuplot.open do |gp|
    Gnuplot::Plot.new(gp) do |plot|
      title = functions_to_title(functions)
      plot.title title
      set_up(plot)

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

      functions.each do |f|
        pb.reset

        name = fname(f)
        results[name] = {}

        y = x.collect do |v|
          pb.increment
          data = data_generator.call(v)
          current_trials = (1..trials).collect do |_|
            Benchmark.measure { f.call(data) }.real
          end
          results[name][v] = current_trials
          current_trials.reduce(0.0, :+) / trials
        end

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