Matplotlib.colors.to_rgba() in Python (original) (raw)

import matplotlib.pyplot as plt

import matplotlib.colors as mcolors

def colortable(colors, title,

`` colors_sort = True ,

`` emptycols = 0 ):

`` width = 212

`` height = 22

`` swatch_width = 48

`` margin = 12

`` topmargin = 40

`` if colors_sort is True :

`` to_hsv = sorted (( tuple (mcolors.rgb_to_hsv(mcolors.to_rgba(color)[: 3 ])),

`` name)

`` for name, color in colors.items())

`` names = [name for hsv, name in to_hsv]

`` else :

`` names = list (colors)

`` length_of_names = len (names)

`` length_cols = 4 - emptycols

`` length_rows = length_of_names / / length_cols + int (length_of_names % length_cols > 0 )

`` width2 = width * 4 + 2 * margin

`` height2 = height * length_rows + margin + topmargin

`` dpi = 72

`` figure, axes = plt.subplots(figsize = (width2 / dpi, height2 / dpi), dpi = dpi)

`` figure.subplots_adjust(margin / width2, margin / height2,

`` (width2 - margin) / width2,

`` (height2 - topmargin) / height2)

`` axes.set_xlim( 0 , width * 4 )

`` axes.set_ylim(height * (length_rows - 0.5 ), - height / 2. )

`` axes.yaxis.set_visible( False )

`` axes.xaxis.set_visible( False )

`` axes.set_axis_off()

`` axes.set_title(title, fontsize = 24 , loc = "left" , pad = 10 )

`` for i, name in enumerate (names):

`` rows = i % length_rows

`` cols = i / / length_rows

`` y = rows * height

`` swatch_start_x = width * cols

`` swatch_end_x = width * cols + swatch_width

`` text_pos_x = width * cols + swatch_width + 7

`` axes.text(text_pos_x, y, name, fontsize = 14 ,

`` horizontalalignment = 'left' ,

`` verticalalignment = 'center' )

`` axes.hlines(y, swatch_start_x, swatch_end_x,

`` color = colors[name], linewidth = 18 )

`` return figure

colortable(mcolors.BASE_COLORS, "Base Colors" ,

`` colors_sort = False , emptycols = 1 )

colortable(mcolors.TABLEAU_COLORS, "Tableau Palette" ,

`` colors_sort = False , emptycols = 2 )

colortable(mcolors.CSS4_COLORS, "CSS Colors" )

plt.show()