Python 如何在 matplotlib 中制作 sans serif 上标或下标文本?

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时间:2020-08-19 02:08:58  来源:igfitidea点击:

How do I make sans serif superscript or subscript text in matplotlib?

pythonmatplotlibfontslatex

提问by frixhax

I want to use a subscript in an axis label in a matplotlib figure. Using LaTeX I would set it as $N_i$, which gives me the italic serif font. I know I can get non-italic mathfont with \mathrm. But I would like to get the text in the default matplotlib sans-serif font so it matches the rest of the text in the figure. Is there a way to subscript text without using latex?

我想在 matplotlib 图中的轴标签中使用下标。使用 LaTeX 我会将它设置为$N_i$,这给了我斜体衬线字体。我知道我可以使用\mathrm. 但我想以默认的 matplotlib sans-serif 字体获取文本,以便它与图中的其余文本相匹配。有没有办法在不使用乳胶的情况下为文本添加下标?

采纳答案by skytux

Use \mathregularto use the font used for regular text outside of mathtext:

使用\mathregular使用用于mathtext的普通文本之外的字体:

$\mathregular{N_i}$

Take a look herefor more information.

查看此处了解更多信息。

回答by T-800

You can do it by customizing rcParams. If you have multiple elements to customize, you can store them as a dictand the update the `rcParams':

您可以通过自定义来做到这一点rcParams。如果您有多个要自定义的元素,您可以将它们存储为 adict并更新 `rcParams':

params = {'mathtext.default': 'regular' }          
plt.rcParams.update(params)

If you want to do a single modification, you can simply type:

如果你想做一个单一的修改,你可以简单地输入:

plt.rcParams.update({'mathtext.default':  'regular' })

In this respect, a trivial example would be as follows:

在这方面,一个简单的例子如下:

import numpy as np
from matplotlib import pyplot as plt

x = np.linspace(1, 10, 40)
y = x**2

fig = plt.figure()
ax = fig.add_subplot(111)
params = {'mathtext.default': 'regular' }          
plt.rcParams.update(params)
ax.set_xlabel('$x_{my text}$')
ax.set_ylabel('$y_i$')
ax.plot(x, y)
ax.grid()
plt.show()

enter image description here

在此处输入图片说明

You can find more information on RcParamsin the matplotlib documentation.

您可以RcParamsmatplotlib 文档中找到更多信息。