Class: TcpsnitchAnalyzer::DescriptiveStat

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

Constant Summary collapse

@@data = 
[]

Class Method Summary collapse

Class Method Details

.add_val(val) ⇒ Object 



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# File 'lib/tcpsnitch_analyzer/descriptive_stat.rb', line 8

def self.add_val(val)
  if val.is_a? Integer
    @@data.push(val)
  else
    if val.is_a? Hash
      TcpsnitchAnalyzer.error("invalid value for descriptive statistic: "\
                              "non-terminal node")
    else
      TcpsnitchAnalyzer.error("invalid value for descriptive statistic: '#{val}'")
    end
  end
end

.print(options) ⇒ Object 



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# File 'lib/tcpsnitch_analyzer/descriptive_stat.rb', line 21

def self.print(options)
  puts "Descriptive statistics:"
  @@data.descriptive_statistics.each do |key, value|
    puts "#{key}".ljust(20) + "#{value}" 
  end
  
  # Only plot CDF is we have a range
  return unless @@data.range > 0 

  x = @@data.sort
  n = x.size
  y = x.map do |el|
    ((x.rindex { |v| v <= el } || -1.0) + 1.0) / n * 100.0
  end

  Gnuplot.open do |gp|
    Gnuplot::Plot.new(gp) do |plot|
      plot.xrange "[#{@@data.min}:#{@@data.max}]; set logscale x"
      plot.title  "CDF for #{options.node_path} (#{options.event_filter} events)"
      plot.xlabel "Value"
      plot.ylabel "Normal CDF"
      plot.data << Gnuplot::DataSet.new([x,y]) do |ds|
        ds.with = "lines"
        ds.linewidth = 4
        ds.title = options.node_path.split('.').last
      end
    end
  end # Gnuplot.open
end