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[ Matplotlib: different font type rendering in axis labels ]

Using the code below I get a label that with two different font types. 'Surface Area' is in sans-serif, while the Angstrom and the superscript are serif. Is there anyway I can make the entire y-label sans-serif?

Thanks in advance!

import matplotlib.pylab as plt
import random

data = [random.random() for i in range(10)]

fig, ax = plt.subplots()
ax.set_ylabel(r'Surface Area ($\AA^2$)', size =16)


Surface Area

Answer 1

A quick and dirty way in matplotlib version 1.3.0 and up, you can use Latex \textup and \textbf:

ax.set_ylabel('\textup{Surface Area} (\AA^2)', size =16)

see tutorials here: http://matplotlib.org/users/usetex.html, don't forget to enable latex by:

rc('text', usetex=True)

This should work for older versions as well as long as you have Latex installed. But if you want to stick to matplotlib's mathtext, it can be done as well:

>>> matplotlib.rcParams['mathtext.fontset']='stixsans'
>>> for i in [1]:
    fig, ax = plt.subplots()
    ytx=ax.set_ylabel(r'Surface Area $(\AA^2)$', size =16)

Not every font will work with mathtext, stixsans is the one that will 'look like' sans-serif: http://matplotlib.org/users/mathtext.html#mathtext-tutorial. Honestly, the difference is very small. I am pretty sure Angstrom is not in stixsans so to render it mathtext falls back to the default Computer Modern font.

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