improved histogram

private

  def histogram_windows(windows)

    _max = max

    _min = min 

    _max = max

    window = (_max - _min) / windows.to_f

    return [(0..1)] if (_max-_min == 0)

    (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

    windows.times

      .inject((_min.._max)

      .step(((_max-_min)/windows.to_f)).to_a << _max){ |a,n| 

        a[n]=(a[n]..a[n+1]); a }.take(windows)

  end

end

    elem: $('.widget_histogram_bars'),

    height: 320,

    no_headbar: true,

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

    values: #{@histogram.json_histogram([12, @histogram.max || 1].min)}

  });