Matplotlib乳胶工作目录/搜索路径 [英] Matplotlib latex working directory / search path

问题描述

运行乳胶时，Matplotlib似乎在当前工作目录中找不到文件.有人知道它在哪里寻找文件吗?

Matplotlib doesn't seem to find files in the current working directory when running latex. Does anyone know where it looks for files?

背景是:我有一个巨大的序言，我在处理之前将\input放入乳胶中(很多宏，各种使用包等).在独立论文中，我执行\input{BigFatHeader.tex}.因此，当我使用matplotlib时，我尝试仅在前言中输入此文件.做到这一点的python代码是

The background is: I have a huge preamble that I \input into latex before processing (lots of macros, various usepackages, etc.). In a stand-alone paper, I do \input{BigFatHeader.tex}. So when I use matplotlib, I try to just input this file in the preamble. The python code to do this is

matplotlib.rcParams['text.latex.preamble'].append(r'\input{BigFatHeader.tex}')

然后我可以验证该文件是否在cwd中-我在ls时可以看到它，或者可以执行os.path.isfile("BigFatHeader.tex")并得到True.但是，当我尝试使用乳胶绘制某些内容时，python会从乳胶过程中吐出一条很大的错误消息，最终导致 ！ LaTeX错误:找不到文件BigFatHeader.tex. 因此，大概它会更改到其他目录(不是/tmp/；我检查过)以完成其工作.知道这可能在哪里吗?

And I can verify that that file is in the cwd -- I see it when I ls, or I can do os.path.isfile("BigFatHeader.tex") and get True. But when I try to plot something using latex, python spits out a big error message from the latex process, that culminates in ! LaTeX Error: File BigFatHeader.tex not found. So presumably it changes to some other directory (not /tmp/; I checked) to do its work. Any idea where this might be?

我的最小工作示例是:

import matplotlib
import matplotlib.pyplot as plt
matplotlib.rcParams['text.latex.preamble'] = r'\input{BigFatHeader.tex}'
matplotlib.rcParams['text.usetex'] = True
plt.plot([1,2])
plt.savefig('MWE.pdf')

BigFatHeader.tex可能很简单

\usepackage{bm}

推荐答案

我在Ubuntu Lucid matplotlib 1.1.0上遇到了相同的错误. 有两个选项:

I'm having the same error on my Ubuntu Lucid, matplotlib 1.1.0. There are two options:

提供完整路径:

matplotlib.rcParams['text.latex.preamble'] = r'\input{/home/br/sweethome/temp/BigFatHeader}'

为我工作.请注意，对于文件为\input的文件，您无需添加.tex扩展名.如果您不想对路径进行硬编码，则可以使用os.getcwd():

works for me. Notice that you don't put .tex extension for the files to be \input. If you don't want to hardcode the path, you can get it using os.getcwd():

import matplotlib
import matplotlib.pyplot as plt
import os

filename=r'\input{'+os.getcwd()+r'/BigFatHeader}'

matplotlib.rcParams['text.latex.preamble'] = filename
matplotlib.rcParams['text.usetex'] = True
plt.plot([1,2])
plt.savefig('MWE.pdf')

或者只是将文件读入文本字符串，然后将其设置为rcParams.

Or just read in your your file into a text string and set the rcParams with it.

import matplotlib
import matplotlib.pyplot as plt

paramstring=r'\usepackage{bm}'
matplotlib.rcParams['text.latex.preamble'] = paramstring
matplotlib.rcParams['text.usetex'] = True
plt.plot([1,2])
plt.savefig('MWE.pdf')

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