proper histogram

    interval = parse_interval(event["interval"])

    colors = ["#2F635E", "#606B36", "#727070", "#936953", "#CD645A", "#FACE4F", "#42436B"]

    @opts[:histogram] = (@opts[:histogram] || 20).to_i

    #@num_min =

    #@num_max =

    end

  end

  def json_histogram(windows)

    histogram(windows).to_a.sort do |a, b|

      a[0].first <=> b[0].first

    end.map do |r, v|

      ["#{r.first.round(1).to_s}-#{r.last.round(1).to_s}", v.to_i]

    end.to_json

  end

private

  def histogram_windows(windows)

    window = (max - min) / windows

    _max = max

    _min = min

    window = (_max - _min) / windows.to_f

    (windows - 1).times.inject([min]) do |a,w| 

      a << a.last + window

    end.map do |swindow|

      (swindow..(swindow+window))

    (windows - 1).times.inject([(0..min)]) do |a,w| 

      a << (a[-1].last..a.last.last+window)

    end.tap do |wins|

      wins.delete_at(0)

      wins[-1] = (wins[-1].first.._max)

    end

  end

      socket.onopen do

        socket.onmessage do |message|

          puts "received: #{message}"

          #puts "received: #{message}"

          begin

            message = JSON.parse(message)

          rescue

  .widget_histogram_bars.resizable(data-width="60")

  .resizable(data-width="60")

  .resizable(data-width="60" style="margin-top:10px;")

    .headbar.small

      Average, Min and Max over Time

    elem: $('.widget_histogram_bars'),

    height: 320,

    no_headbar: true,

    values: #{@histogram.histogram(@opts[:histogram]).map{ |r,v| [r.to_s, v] }.to_json}

    values: #{@histogram.json_histogram(12)}

  });