在Python图中键入希腊字母等 [英] Typing Greek letters etc. in Python plots

问题描述

我需要在绘图的轴标签中键入希腊字母和Angstrom符号.例如

I need to type Greek letters and the Angstrom symbol in labels of axes in a plot. So for example

fig.gca().set_xlabel("$wavelength\, (Angstrom)$")
fig.gca().set_ylabel("$lambda$")

除了我实际上希望将"Angstrom"和"lambda"替换为实际的符号.我应该怎么做?谢谢！

except that I actually want "Angstrom" and "lambda" replaced by actual symbols. How should I do this? Thanks!

推荐答案

不仅可以将原始字符串添加到matplotlib，还可以使用以下方法在matplotlibrc或本地指定字体:

Not only can you add raw strings to matplotlib but you can also specify the font in matplotlibrc or locally with:

from matplotlib import rc

rc('font', **{'family':'serif','serif':['Palatino']})
rc('text', usetex=True)

这将更改您的衬线乳胶字体.您也可以像这样指定Sans-serif Helvetica

This would change your serif latex font. You can also specify the sans-serif Helvetica like so

rc('font',**{'family':'sans-serif','sans-serif':['Helvetica']})

其他选项是cursive和monospace以及它们各自的字体名称. 您的标签将是

Other options are cursive and monospace with their respective font names. Your label would then be

fig.gca().set_xlabel(r'wavelength $5000 \AA$')

如果字体不提供Angstrom符号，则可以尝试使用\mathring{A}

If the font doesn't supply an Angstrom symbol you can try using \mathring{A}

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