Sha256: 52b46c0bbddc82ca761423f9b79c2221d0aab2bac8082724fecf2f07d314e1e6
Contents?: true
Size: 1.39 KB
Versions: 14
Compression:
Stored size: 1.39 KB
Contents
# frozen_string_literal: true
require 'histogram'
#
# Here's how to set up a Gruff::Histogram.
#
# g = Gruff::Histogram.new
# g.title = 'Histogram Graph'
# g.minimum_bin = 10
# g.bin_width = 20
# g.data :A, [10, 10, 20, 30, 40, 40, 40, 40, 40, 40, 50, 10, 10, 10]
# g.data :B, [100, 100, 100, 100, 90, 90, 80, 30, 30, 30, 30, 30]
# g.write('histogram.png')
#
class Gruff::Histogram < Gruff::Bar
# Specifies interpolation between the min and max of the set. Default is +10+.
attr_writer :bin_width
# Specifies minimum value for bin.
attr_writer :minimum_bin
# Specifies maximum value for bin.
attr_writer :maximum_bin
def initialize(*)
super
@data = []
end
def data(name, data_points = [], color = nil)
@data << [name, Array(data_points), color]
end
private
def initialize_attributes
super
@bin_width = 10
@minimum_bin = nil
@maximum_bin = nil
end
def setup_data
@data.each do |(name, data_points, color)|
if data_points.empty?
store.add(name, [], color)
else
bins, freqs = HistogramArray.new(data_points).histogram(bin_width: @bin_width, min: @minimum_bin, max: @maximum_bin)
bins.each_with_index do |bin, index|
@labels[index] = bin
end
store.add(name, freqs, color)
end
end
super
end
# @private
class HistogramArray < Array
include ::Histogram
end
end
Version data entries
14 entries across 14 versions & 1 rubygems