Module: AlgoPlot

Defined in:
lib/algoplot.rb,
lib/algoplot/options.rb

Defined Under Namespace

Classes: Options

Class Method Summary collapse

Class Method Details

.create_dataset(func) ⇒ Object

ds.with = “lines”



14
15
16
 
# File 'lib/algoplot.rb', line 14

def self.create_dataset(func)
  Gnuplot::DataSet.new(func)
end

.get_extension(filename) ⇒ Object 



5
6
7
 
# File 'lib/algoplot.rb', line 5

def self.get_extension(filename)
  File.extname(filename.downcase).delete('.')
end

.is_extension_allowed?(ext) ⇒ Boolean

Returns:

  • (Boolean) 


9
10
11
 
# File 'lib/algoplot.rb', line 9

def self.is_extension_allowed?(ext)
  %w(pdf png jpg).include? ext
end

.plot(n, functions, filename) ⇒ Object 



18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
 
# File 'lib/algoplot.rb', line 18

def self.plot(n, functions, filename)
  ext = get_extension(filename)
  fail "Extension #{ext} not allowed" unless is_extension_allowed?(ext)
  Gnuplot.open do |gp|
    Gnuplot::Plot.new(gp) do |plot|
      plot.terminal ext
      plot.output filename
      plot.xrange "[0:#{n}]"
      plot.title "Growth of #{functions.join(', ')}"
      plot.ylabel "steps"
      plot.xlabel "N"
      plot.data = functions.map { |f| create_dataset(f) }
    end
  end
end