Method: Gnuplot.plot_to

Defined in:
lib/gnuplot.rb

.plot_to(file, persist = false, *args, &block) ⇒ Object

If file is a file name that has a Gnuplot.terminal associated with it, the GNUPLOT process’s terminal will be set accordingly and its output redirected to file.

If file is an IO object or doesn’t have a terminal associated with it, the GNUPLOT process’s output will simply be written to file.



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# File 'lib/gnuplot.rb', line 69

def plot_to(file, persist = false, *args, &block)
  io, file = file, nil if file.respond_to?(:write)

  if file and term = terminal(File.extname(file))
    plot(persist, *args) { |plot|
      block[plot]

      plot.terminal term unless plot[:terminal] || plot[:term]
      plot.output file.to_s unless plot[:output] || plot[:out]
    }
  else
    begin
      io ||= File.open(file, 'w')
      Plot.new(io, *args, &block)
    ensure
      io.close if file && io
    end
  end
end