a_new_hope.py 1.4 KB
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#!/usr/bin/env python2
"""
Using custom colors
====================
Using the recolor method and custom coloring functions.
"""

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import numpy as np
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from PIL import Image
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from os import path
import matplotlib.pyplot as plt
import random

from wordcloud import WordCloud, STOPWORDS


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def grey_color_func(word, font_size, position, orientation, random_state=None, **kwargs):
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    return "hsl(0, 0%%, %d%%)" % random.randint(60, 100)

d = path.dirname(__file__)

# read the mask image
# taken from
# http://www.stencilry.org/stencils/movies/star%20wars/storm-trooper.gif
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mask = np.array(Image.open(path.join(d, "stormtrooper_mask.png")))
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# movie script of "a new hope"
# http://www.imsdb.com/scripts/Star-Wars-A-New-Hope.html
# May the lawyers deem this fair use.
text = open("a_new_hope.txt").read()

# preprocessing the text a little bit
text = text.replace("HAN", "Han")
text = text.replace("LUKE'S", "Luke")

# adding movie script specific stopwords
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stopwords = set(STOPWORDS)
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stopwords.add("int")
stopwords.add("ext")

wc = WordCloud(max_words=1000, mask=mask, stopwords=stopwords, margin=10,
               random_state=1).generate(text)
# store default colored image
default_colors = wc.to_array()
plt.title("Custom colors")
plt.imshow(wc.recolor(color_func=grey_color_func, random_state=3))
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wc.to_file("a_new_hope.png")
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plt.axis("off")
plt.figure()
plt.title("Default colors")
plt.imshow(default_colors)
plt.axis("off")
plt.show()