Class: GNUPlotr

Inherits:
Object
  • Object
show all
Defined in:
lib/gnuplotr.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(path = nil) ⇒ GNUPlotr

Returns a new instance of GNUPlotr.

Raises:

  • (RuntimeError) 


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# File 'lib/gnuplotr.rb', line 34

def initialize(path=nil)
  @gnuplot_path = (path || find_path)
  raise RuntimeError, "Could not find #{@gnuplot_path}" unless File.exist? @gnuplot_path
  @gnuplot, @stdout, @stderr = Open3.popen3(@gnuplot_path)
  Thread.new { capture(@stdout) {|line| puts "> " + line } } 
  Thread.new { capture(@stderr) {|line| warn ">>" + line } } 
  @series = {}
  @record = false
  @record_list = []
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(name, *args, &block) ⇒ Object 



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# File 'lib/gnuplotr.rb', line 57

def method_missing(name, *args, &block)
  options = args.inject("") {|s, t|
    s + " " + parse_tokens(t)
  }
  raw "#{name.to_s.sub(/_/, " ")} #{options}"
end

Instance Attribute Details

#gnuplot_path ⇒ Object

Returns the value of attribute gnuplot_path.



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# File 'lib/gnuplotr.rb', line 33

def gnuplot_path
  @gnuplot_path
end

#record ⇒ Object

Returns the value of attribute record.



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# File 'lib/gnuplotr.rb', line 33

def record
  @record
end

#series ⇒ Object

Returns the value of attribute series.



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# File 'lib/gnuplotr.rb', line 33

def series
  @series
end

Instance Method Details

#dump_input ⇒ Object 



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# File 'lib/gnuplotr.rb', line 77

def dump_input
  header = "\# Gnuplot inputfile generated on #{Time.now} by GNUPlotr\n"
  header + @record_list * "\n"
end

#fill_series(name) {|| ... } ⇒ Object

Yields:

  • () 


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# File 'lib/gnuplotr.rb', line 50

def fill_series(name)
  raise "Need a block" unless block_given?
  new_series(name) unless @series[name]
  yield @series[name]
  @series[name].close
end

#new_series(name) ⇒ Object

Raises:

  • (ArgumentError) 


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# File 'lib/gnuplotr.rb', line 45

def new_series(name)
  raise ArgumentError, "name must be a Symbol" unless name.kind_of? Symbol
  @series[name] = DataSeries.new(name)
end

#plot(arg, opts = nil) ⇒ Object 



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

def plot(arg, opts=nil)
  _plot("plot", arg, opts)
end

#raw(message) ⇒ Object 



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# File 'lib/gnuplotr.rb', line 64

def raw(message)
  @record_list << message if @record
  @gnuplot.puts message
end

#replot(arg, opts = nil) ⇒ Object 



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# File 'lib/gnuplotr.rb', line 73

def replot(arg, opts=nil)
  _plot("replot", arg, opts)  
end

#reset ⇒ Object 



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# File 'lib/gnuplotr.rb', line 82

def reset
  @record_list = []
end