Class: GnuplotRenderer::PlotHelper::Plotter

Inherits:
Object
  • Object
show all
Defined in:
lib/gitstats/renderer/gnuplot.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(helper) ⇒ Plotter

Returns a new instance of Plotter.



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# File 'lib/gitstats/renderer/gnuplot.rb', line 6

def initialize(helper)
  @helper = helper
  @plot = nil
end

Instance Attribute Details

#plot ⇒ Object (readonly)

Returns the value of attribute plot.



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# File 'lib/gitstats/renderer/gnuplot.rb', line 4

def plot
  @plot
end

Instance Method Details

#add_boxes(args = {}) {|x, l, y| ... } ⇒ Object

Yields:

  • (x, l, y) 


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# File 'lib/gitstats/renderer/gnuplot.rb', line 29

def add_boxes(args = {})
  args = {
    :setrange => true,
    :limitlabels => true,
    :labelcount => 15
  }.merge(args)

  x = Array.new
  l = Array.new
  y = Array.new

  yield x, l, y

  limitlabels(l, args[:labelcount]) if args[:limitlabels]

  @plot.xrange "[\"#{x.first - 1}\":\"#{x.last + 1}\"]" if args[:setrange]

  @plot.data << Gnuplot::DataSet.new([x, l, y]) do |ds|
    ds.using = '1:3:(0.5):xtic(2)'
    ds.with = 'boxes fs solid'
    ds.notitle
  end
end

#add_steps(args = {}) {|x, l, y| ... } ⇒ Object

Yields:

  • (x, l, y) 


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# File 'lib/gitstats/renderer/gnuplot.rb', line 53

def add_steps(args = {})
  args = {
    :setrange => true,
    :limitlabels => true,
    :labelcount => 15,
    :firstlabel => '""'
  }.merge(args)

  x = Array.new
  l = Array.new
  y = Array.new

  yield x, l, y

  limitlabels(l, args[:labelcount]) if args[:limitlabels]

  @plot.xrange "[\"#{x.first - 1}\":\"#{x.last + 1}\"]" if args[:setrange]

  unless args[:firstlabel].nil?
    x.insert(0, x.first - 1)
    l.insert(0, args[:firstlabel])
    y.insert(0, 0)
  end

  @plot.data << Gnuplot::DataSet.new([x, l, y]) do |ds|
    ds.using = '1:3:xtic(2)'
    ds.with = 'steps'
    ds.notitle
  end
end

#run ⇒ Object 



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# File 'lib/gitstats/renderer/gnuplot.rb', line 11

def run
  Gnuplot.open do |gp|
    Gnuplot::Plot.new(gp) do |plot|
      @plot = plot

      plot.terminal 'png transparent size 640,240'
      plot.size '1.0,1.0'
      plot.output File.join(@helper.outdir, File.basename(@helper.filename, '.plot') + '.png')
      plot.nokey
      plot.xtics 'rotate'
      plot.ytics 'autofreq'
      plot.grid 'y'

      yield self
    end
  end
end