# Exporting pgf plots for latex from Sage environment using pandas and matplotlib

I've done some data analysis using Pandas in Sage, and would like to export plots to include in a paper. Unfortunately, exporting as a pdf means that titles etc. won't adjust to changes in the formatting of my Latex document, so I would like to export as a pgf (as explained, for example, here).

When I do this, however, I get the following error:

```
File ~/sage/sage/local/var/lib/sage/venv-python3.10/lib/python3.10/site-packages/matplotlib/backends/backend_pgf.py:293, in LatexManager.__init__(self)
290 self._setup_latex_process(expect_reply=False)
291 except FileNotFoundError as err:
292 raise RuntimeError(
--> 293 f"{self.latex.args[0]!r} not found. Install it or change "
294 f"rcParams['pgf.texsystem'] to an available TeX "
295 f"implementation.") from err
296 except OSError as err:
297 raise RuntimeError(
298 f"Error starting process {self.latex.args[0]!r}") from err
AttributeError: 'LatexManager' object has no attribute 'latex'
```

It seems that somehow matplotlib is not able to find the correct latex implementation, but I'm not sure how to fix that. Does anyone do this regularly and know of a solution? If it's relevant, I am running Sage 10.0.beta6 on WSL. I also have a MWE below for reference. Thanks so much!

MWE:

```
sage: import matplotlib
sage: import matplotlib.pyplot as plt
sage: matplotlib.use('pgf')
sage: import pandas as pd
sage: df = pd.DataFrame({'length' : [float(x) for x in [1.5,0.5,1.2,0.9,3]],
....: 'width' : [float(x) for x in [0.7, 0.2, 0.15, 0.2, 1.1]]}, index = ['
....: pig', 'rabbit', 'duck', 'chicken', 'horse'])
sage: hist = df.hist(bins = 3)
sage: plt.savefig("test.pgf")
```

@stillconfused: WorksForMe(TM) on 10.3.beta8 compiled from source git on Linux Debian testing ; my LaTeX installation is Debian's

`texlive-full`

.What is your platform, and how did you install Sage ?Under Windows, the use of a Windows-installed LaTeX by WSL's sagemath may be problematic (or at least non-obvious to configure...).Since this is more a Python/Matplotlib question than a Sage question, querying relevant channels may be more useful.

Acid test : can you run

at the Sage prompt ?