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

问题描述

运行 Latex 时，Matplotlib 似乎没有在当前工作目录中找到文件.有谁知道它在哪里查找文件?

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 Latex 中(大量宏、各种使用包等).在独立论文中，我使用 input{BigFatHeader.tex}.所以当我使用 matplotlib 时，我尝试在序言中输入这个文件.执行此操作的 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}')

我可以验证该文件是否在 cwd 中——我在 ls 时看到它，或者我可以执行 os.path.isfile("BigFatHeader.tex") 并获得 True.但是当我尝试使用乳胶绘制某些东西时，python 从乳胶过程中吐出一条大错误消息，最终导致！LaTeX 错误:找不到文件 BigFatHeader.tex.所以大概它会更改到其他目录(不是 /tmp/；我检查过)来完成它的工作.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 可能就这么简单

usepackage{bm}

推荐答案

我在我的 Ubuntu Lucid，matplotlib 1.1.0 上遇到了同样的错误.有两种选择:

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

给它一个完整的路径:

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

为我工作.请注意，您没有将文件的 .tex 扩展名设置为 input.如果您不想硬编码路径，可以使用 os.getcwd() 获取它:

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')

或者只是将你的文件读入一个文本字符串并用它设置 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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