我尝试使用matplotlib为LaTeX创建一个pgf文件:
from matplotlib.pyplot import subplots
from numpy import linspace
x = linspace(0, 100, 30)
fig, ax = subplots(figsize = (10, 6))
ax.scatter(x, x)
fig.tight_layout()
fig.savefig('/home/mark/dicp/python/figure.pgf')
但我得OSError: [Errno 2] No such file or directory
:
Traceback (most recent call last):
File "visualize/latex_figs.py", line 32, in <module>
fig.savefig('/home/mark/dicp/python/figure.pgf')
File "/usr/local/lib/python2.7/dist-packages/matplotlib/figure.py", line 1421, in savefig
self.canvas.print_figure(*args, **kwargs)
File "/usr/local/lib/python2.7/dist-packages/matplotlib/backend_bases.py", line 2220, in print_figure
**kwargs)
File "/usr/local/lib/python2.7/dist-packages/matplotlib/backend_bases.py", line 1957, in print_pgf
return pgf.print_pgf(*args, **kwargs)
File "/usr/local/lib/python2.7/dist-packages/matplotlib/backends/backend_pgf.py", line 818, in print_pgf
self._print_pgf_to_fh(fh, *args, **kwargs)
File "/usr/local/lib/python2.7/dist-packages/matplotlib/backends/backend_pgf.py", line 797, in _print_pgf_to_fh
RendererPgf(self.figure, fh),
File "/usr/local/lib/python2.7/dist-packages/matplotlib/backends/backend_pgf.py", line 409, in __init__
self.latexManager = LatexManagerFactory.get_latex_manager()
File "/usr/local/lib/python2.7/dist-packages/matplotlib/backends/backend_pgf.py", line 223, in get_latex_manager
new_inst = LatexManager()
File "/usr/local/lib/python2.7/dist-packages/matplotlib/backends/backend_pgf.py", line 305, in __init__
cwd=self.tmpdir)
File "/usr/lib/python2.7/subprocess.py", line 679, in __init__
errread, errwrite)
File "/usr/lib/python2.7/subprocess.py", line 1249, in _execute_child
raise child_exception
OSError: [Errno 2] No such file or directory
它还会生成输出文件的这一部分:
%% [whole bunch of comments]
\begingroup%
\makeatletter%
\begin{pgfpicture}%
\pgfpathrectangle{\pgfpointorigin}{\pgfqpoint{10.000000in}{6.000000in}}%
\pgfusepath{use as bounding box}%
我不明白subprocesses.py中的OSError: No such file or directory
与任何事情有什么关系......我试图保存的文件是可写的。我误解了什么,或者这是我应该报告的错误?
答案 0 :(得分:7)
我在尝试运行示例脚本时也遇到了这个问题。 backend_pgf.py
首次尝试使用默认LaTeX命令时会出现此问题。 PGF后端似乎假定默认情况下应该使用xelatex
。如果您和我的问题相同,那么您有两个选择:
将密钥"pgf.texsystem" : "pdflatex"
(或lualatex
,无论如何)添加到您的matplotlib.rcParams
。例如,将以下代码段添加到脚本的顶部:
import matplotlib
pgf_with_rc_fonts = {"pgf.texsystem": "pdflatex"}
matplotlib.rcParams.update(pgf_with_rc_fonts)
确保您拥有xelatex
,并且它位于PATH
上,并将其用作默认的latex命令(即假设您使用的是Mac或Linux系统,{ {1}}应该返回路径。)