Source code for colour.plotting.characterisation

#!/usr/bin/env python
# -*- coding: utf-8 -*-

"""
Characterisation Plotting
=========================

Defines the characterisation plotting objects:

-   :func:`colour_checker_plot`
"""

from __future__ import division

import matplotlib
import matplotlib.pyplot
import numpy as np
import pylab

from colour.characterisation import COLOURCHECKERS
from colour.models import RGB_COLOURSPACES
from colour.models import xyY_to_XYZ, XYZ_to_sRGB
from colour.plotting import (
    canvas,
    decorate,
    boundaries,
    display,
    colour_parameter,
    multi_colour_plot)

__author__ = 'Colour Developers'
__copyright__ = 'Copyright (C) 2013 - 2015 - Colour Developers'
__license__ = 'New BSD License - http://opensource.org/licenses/BSD-3-Clause'
__maintainer__ = 'Colour Developers'
__email__ = 'colour-science@googlegroups.com'
__status__ = 'Production'

__all__ = ['colour_checker_plot']


[docs]def colour_checker_plot(colour_checker='ColorChecker 2005', **kwargs): """ Plots given colour checker. Parameters ---------- colour_checker : unicode, optional Color checker name. \*\*kwargs : \*\* Keywords arguments. Returns ------- bool Definition success. Raises ------ KeyError If the given colour rendition chart is not found in the factory colour rendition charts. Examples -------- >>> colour_checker_plot() # doctest: +SKIP True """ canvas(**kwargs) colour_checker, name = COLOURCHECKERS.get(colour_checker), colour_checker if colour_checker is None: raise KeyError( ('Colour checker "{0}" not found in ' 'factory colour checkers: "{1}".').format( name, sorted(COLOURCHECKERS.keys()))) _, data, illuminant = colour_checker colour_parameters = [] for index, label, x, y, Y in data: XYZ = xyY_to_XYZ((x, y, Y)) RGB = XYZ_to_sRGB(XYZ, illuminant) colour_parameters.append( colour_parameter(label.title(), np.clip(np.ravel(RGB), 0, 1))) background_colour = '0.1' matplotlib.pyplot.gca().patch.set_facecolor(background_colour) width = height = 1.0 spacing = 0.25 across = 6 settings = { 'standalone': False, 'width': width, 'height': height, 'spacing': spacing, 'across': across, 'text_size': 8, 'margins': [-0.125, 0.125, -0.5, 0.125]} settings.update(kwargs) multi_colour_plot(colour_parameters, **settings) text_x = width * (across / 2) + (across * (spacing / 2)) - spacing / 2 text_y = -(len(colour_parameters) / across + spacing / 2) pylab.text(text_x, text_y, '{0} - {1} - Colour Rendition Chart'.format( name, RGB_COLOURSPACES.get('sRGB').name), color='0.95', clip_on=True, ha='center') settings.update({ 'title': name, 'facecolor': background_colour, 'edgecolor': None, 'standalone': True}) boundaries(**settings) decorate(**settings) return display(**settings)