You can color a word-cloud by using an image-based coloring strategy implemented in ImageColorGenerator. It uses the average color of the region occupied by the word in a source image. You can combine this with masking - pure-white will be interpreted as ‘don’t occupy’ by the WordCloud object when passed as mask. If you want white as a legal color, you can just pass a different image to “mask”, but make sure the image shapes line up.
from os import path from PIL import Image import numpy as np import matplotlib.pyplot as plt import os from wordcloud import WordCloud, STOPWORDS, ImageColorGenerator # get data directory (using getcwd() is needed to support running example in generated IPython notebook) d = path.dirname(__file__) if "__file__" in locals() else os.getcwd() # Read the whole text. text = open(path.join(d, 'alice.txt')).read() # read the mask / color image taken from # http://jirkavinse.deviantart.com/art/quot-Real-Life-quot-Alice-282261010 alice_coloring = np.array(Image.open(path.join(d, "alice_color.png"))) stopwords = set(STOPWORDS) stopwords.add("said") wc = WordCloud(background_color="white", max_words=2000, mask=alice_coloring, stopwords=stopwords, max_font_size=40, random_state=42) # generate word cloud wc.generate(text) # create coloring from image image_colors = ImageColorGenerator(alice_coloring) # show fig, axes = plt.subplots(1, 3) axes.imshow(wc, interpolation="bilinear") # recolor wordcloud and show # we could also give color_func=image_colors directly in the constructor axes.imshow(wc.recolor(color_func=image_colors), interpolation="bilinear") axes.imshow(alice_coloring, cmap=plt.cm.gray, interpolation="bilinear") for ax in axes: ax.set_axis_off() plt.show()
Total running time of the script: ( 0 minutes 3.062 seconds)