histogram class

require "fnordmetric/widgets/timeseries_widget"

require "fnordmetric/widgets/numbers_widget"

require "fnordmetric/histogram"

    key([(progressive? ? :progressive : tick_at(_time).to_s), _append])

  end

  def tick_keys(_range, _append=nil)

    ticks_in(_range).map{ |_t| tick_key(_t, _append) }

  end

  def two_dimensional?

    !@opts[:three_dimensional]

  end

    interval = parse_interval(event["interval"])

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

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

    #@num_min =

    #@num_max =

    @histogram = FnordMetric::Histogram.new

    tick_keys(interval, :histogram).each do |tkey|

      sync_redis.hgetall(tkey).each do |_val, _count|

        @histogram[_val] += _count.to_i

      end

    end

    render_page(:distribution_gauge)

  end

class FnordMetric::Histogram < Hash

  def initialize

    super{ |h,k| h[k]=0 }

  end

  def [](key)

  	super(key.to_f)

  end

  def []=(key, val)

  	super(key.to_f, val)

  end

  def min

  	keys.sort.first.to_i

  end

  def max

    keys.sort.last.to_i

  end

  def histogram(windows)

    Hash[histogram_windows(windows).map{ |w| [w,0] }].tap do |histo|

      self.each do |k,v|

        histo.detect do |win, wval|          

          histo[win] += v if win.include?(k)

        end

      end

    end

  end

private

  def histogram_windows(windows)

    window = (max - min) / windows

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

      a << a.last + window

    end.map do |swindow|

      (swindow..(swindow+window))

    end    

  end

end

 No newline at end of file

-> hashwithindifferentaccess

-> FnordMetric::Timeseries (min/max, values, punchcard, to_histogram etc)

-> timeseries-gauge/widget: set resolution via "tick buttons" 

-> timeseries-gauge: realtime tab w/ moving average

-> timeseries-widget: render with stroke=3 + points if xticks < 100