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Merge pull request #2561 from ivanov/unicorn-fact
multi-colored text example
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# -*- coding: utf-8 -*- | ||
""" | ||
The example shows how to string together several text objects. | ||
HISTORY | ||
------- | ||
On the matplotlib-users list back in February 2012, Gökhan Sever asked the | ||
following question: | ||
Is there a way in matplotlib to partially specify the color of a string? | ||
Example: | ||
plt.ylabel("Today is cloudy.") | ||
How can I show "today" as red, "is" as green and "cloudy." as blue? | ||
Thanks. | ||
Paul Ivanov responded with this answer: | ||
""" | ||
import matplotlib.pyplot as plt | ||
from matplotlib import transforms | ||
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def rainbow_text(x, y, strings, colors, ax=None, **kw): | ||
""" | ||
Take a list of ``strings`` and ``colors`` and place them next to each | ||
other, with text strings[i] being shown in colors[i]. | ||
This example shows how to do both vertical and horizontal text, and will | ||
pass all keyword arguments to plt.text, so you can set the font size, | ||
family, etc. | ||
The text will get added to the ``ax`` axes, if provided, otherwise the | ||
currently active axes will be used. | ||
""" | ||
if ax is None: | ||
ax = plt.gca() | ||
t = ax.transData | ||
canvas = ax.figure.canvas | ||
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# horizontal version | ||
for s,c in zip(strings, colors): | ||
text = ax.text(x, y, " " + s + " ", color=c, transform=t, **kw) | ||
text.draw(canvas.get_renderer()) | ||
ex = text.get_window_extent() | ||
t = transforms.offset_copy(text._transform, x=ex.width, units='dots') | ||
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# vertical version | ||
for s,c in zip(strings, colors): | ||
text = ax.text(x, y, " " + s + " ", color=c, transform=t, | ||
rotation=90, va='bottom', ha='center', **kw) | ||
text.draw(canvas.get_renderer()) | ||
ex = text.get_window_extent() | ||
t = transforms.offset_copy(text._transform, y=ex.height, units='dots') | ||
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rainbow_text(0, 0, "all unicorns poop rainbows ! ! !".split(), | ||
['red', 'cyan', 'brown', 'green', 'blue', 'purple', 'black'], | ||
size=18) | ||
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plt.show() |