Question

我想使用乳胶作为人物的标签，但出现错误
RuntimeError：LaTeX无法处理以下字符串： b'lp'
这是LaTeX生成的完整报告：
就是这样（我没有看到任何报告）

编辑：这是我得到的全部错误：

Traceback (most recent call last):
  File "C:\Users\Vincent\Anaconda3\lib\site-packages\matplotlib\backends\backend_qt5agg.py", line 197, in __draw_idle_agg
    FigureCanvasAgg.draw(self)
  File "C:\Users\Vincent\Anaconda3\lib\site-packages\matplotlib\backends\backend_agg.py", line 464, in draw
    self.figure.draw(self.renderer)
  File "C:\Users\Vincent\Anaconda3\lib\site-packages\matplotlib\artist.py", line 63, in draw_wrapper
    draw(artist, renderer, *args, **kwargs)
  File "C:\Users\Vincent\Anaconda3\lib\site-packages\matplotlib\figure.py", line 1144, in draw
    renderer, self, dsu, self.suppressComposite)
  File "C:\Users\Vincent\Anaconda3\lib\site-packages\matplotlib\image.py", line 139, in _draw_list_compositing_images
    a.draw(renderer)
  File "C:\Users\Vincent\Anaconda3\lib\site-packages\matplotlib\artist.py", line 63, in draw_wrapper
    draw(artist, renderer, *args, **kwargs)
  File "C:\Users\Vincent\Anaconda3\lib\site-packages\matplotlib\axes\_base.py", line 2426, in draw
    mimage._draw_list_compositing_images(renderer, self, dsu)
  File "C:\Users\Vincent\Anaconda3\lib\site-packages\matplotlib\image.py", line 139, in _draw_list_compositing_images
    a.draw(renderer)
  File "C:\Users\Vincent\Anaconda3\lib\site-packages\matplotlib\artist.py", line 63, in draw_wrapper
    draw(artist, renderer, *args, **kwargs)
  File "C:\Users\Vincent\Anaconda3\lib\site-packages\matplotlib\axis.py", line 1138, in draw
    renderer)
  File "C:\Users\Vincent\Anaconda3\lib\site-packages\matplotlib\axis.py", line 1078, in _get_tick_bboxes
    extent = tick.label1.get_window_extent(renderer)
  File "C:\Users\Vincent\Anaconda3\lib\site-packages\matplotlib\text.py", line 967, in get_window_extent
    bbox, info, descent = self._get_layout(self._renderer)
  File "C:\Users\Vincent\Anaconda3\lib\site-packages\matplotlib\text.py", line 353, in _get_layout
    ismath=False)
  File "C:\Users\Vincent\Anaconda3\lib\site-packages\matplotlib\backends\backend_agg.py", line 230, in get_text_width_height_descent
    renderer=self)
  File "C:\Users\Vincent\Anaconda3\lib\site-packages\matplotlib\texmanager.py", line 676, in get_text_width_height_descent
    dvifile = self.make_dvi(tex, fontsize)
  File "C:\Users\Vincent\Anaconda3\lib\site-packages\matplotlib\texmanager.py", line 423, in make_dvi
    report))
RuntimeError: LaTeX was not able to process the following string:
b'lp'
Here is the full report generated by LaTeX:

这是我的代码：

import numpy as np
from matplotlib import rc
import matplotlib.pyplot as plt
plt.close('all')

rc('text', usetex = True)

mu = np.linspace(0,10,100)
eta = mu**2

fig, ax = plt.subplots()
ax.plot(mu,eta,label= r'$\eta (\mu)$')
ax.set_title('Test')
ax.legend()

我安装了MiKTeX，并根据https://docs.alfresco.com/4.2/tasks/fot-addpath.html将其添加到了环境变量中。
我检查了MiKTeX的软件包，在“ \ MiKTeX可执行文件”类别中找到了“ miktex-dvipng-bin-x64-2.9”。我推断出我有一个dvipng。
我下载了Ghostcript，并将其添加到环境变量中。
我尝试使用texworks将乳胶脚本编译为pdf，从推断出正确安装LaTeX的角度来看，它工作得很好。
在https://matplotlib.org/1.4.1/users/usetex.html中，这就是我所需要的...
我尝试删除.matplotlib / tex.cache目录
我尝试写信

import matplotlib as mpl
mpl.rcParams['text.usetex']=True

代替

from matplotlib import rc
rc('text', usetex = True)

但是产生了相同的结果。

夹心

rc('text', usetex = True)

到

rc('text', usetex = False)

防止出现错误，但是我的标签没有写上乳胶...

经过大量的搜索，我缺乏想法。有人可以帮我吗？

我的配置是：
-Python 3.6（我在spyder中运行代码）
-MiKTeX 2.9
-Ghostscript 9.50
-Windows 10
-编辑：matplotlib 2.0.2

编辑：升级到matplotlib 3.1.1，出现以下错误：

Traceback (most recent call last):
  File "C:\Users\Vincent\Anaconda3\lib\site-packages\matplotlib\texmanager.py", line 304, in _run_checked_subprocess
    stderr=subprocess.STDOUT)
  File "C:\Users\Vincent\Anaconda3\lib\subprocess.py", line 336, in check_output
    **kwargs).stdout
  File "C:\Users\Vincent\Anaconda3\lib\subprocess.py", line 403, in run
    with Popen(*popenargs, **kwargs) as process:
  File "C:\Users\Vincent\Anaconda3\lib\site-packages\spyder\utils\site\sitecustomize.py", line 209, in __init__
    super(SubprocessPopen, self).__init__(*args, **kwargs)
  File "C:\Users\Vincent\Anaconda3\lib\subprocess.py", line 707, in __init__
    restore_signals, start_new_session)
  File "C:\Users\Vincent\Anaconda3\lib\subprocess.py", line 992, in _execute_child
    startupinfo)
FileNotFoundError: [WinError 2] Le fichier spécifié est introuvable

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "C:\Users\Vincent\Anaconda3\lib\site-packages\matplotlib\backends\backend_qt5.py", line 505, in _draw_idle
    self.draw()
  File "C:\Users\Vincent\Anaconda3\lib\site-packages\matplotlib\backends\backend_agg.py", line 388, in draw
    self.figure.draw(self.renderer)
  File "C:\Users\Vincent\Anaconda3\lib\site-packages\matplotlib\artist.py", line 38, in draw_wrapper
    return draw(artist, renderer, *args, **kwargs)
  File "C:\Users\Vincent\Anaconda3\lib\site-packages\matplotlib\figure.py", line 1709, in draw
    renderer, self, artists, self.suppressComposite)
  File "C:\Users\Vincent\Anaconda3\lib\site-packages\matplotlib\image.py", line 135, in _draw_list_compositing_images
    a.draw(renderer)
  File "C:\Users\Vincent\Anaconda3\lib\site-packages\matplotlib\artist.py", line 38, in draw_wrapper
    return draw(artist, renderer, *args, **kwargs)
  File "C:\Users\Vincent\Anaconda3\lib\site-packages\matplotlib\axes\_base.py", line 2607, in draw
    self._update_title_position(renderer)
  File "C:\Users\Vincent\Anaconda3\lib\site-packages\matplotlib\axes\_base.py", line 2556, in _update_title_position
    if title.get_window_extent(renderer).ymin < top:
  File "C:\Users\Vincent\Anaconda3\lib\site-packages\matplotlib\text.py", line 890, in get_window_extent
    bbox, info, descent = self._get_layout(self._renderer)
  File "C:\Users\Vincent\Anaconda3\lib\site-packages\matplotlib\text.py", line 291, in _get_layout
    ismath="TeX" if self.get_usetex() else False)
  File "C:\Users\Vincent\Anaconda3\lib\site-packages\matplotlib\backends\backend_agg.py", line 201, in get_text_width_height_descent
    s, fontsize, renderer=self)
  File "C:\Users\Vincent\Anaconda3\lib\site-packages\matplotlib\texmanager.py", line 448, in get_text_width_height_descent
    dvifile = self.make_dvi(tex, fontsize)
  File "C:\Users\Vincent\Anaconda3\lib\site-packages\matplotlib\texmanager.py", line 338, in make_dvi
    texfile], tex)
  File "C:\Users\Vincent\Anaconda3\lib\site-packages\matplotlib\texmanager.py", line 308, in _run_checked_subprocess
    'found'.format(command[0])) from exc
RuntimeError: Failed to process string with tex because latex could not be found
Traceback (most recent call last):
  File "C:\Users\Vincent\Anaconda3\lib\site-packages\matplotlib\texmanager.py", line 304, in _run_checked_subprocess
    stderr=subprocess.STDOUT)
  File "C:\Users\Vincent\Anaconda3\lib\subprocess.py", line 336, in check_output
    **kwargs).stdout
  File "C:\Users\Vincent\Anaconda3\lib\subprocess.py", line 403, in run
    with Popen(*popenargs, **kwargs) as process:
  File "C:\Users\Vincent\Anaconda3\lib\site-packages\spyder\utils\site\sitecustomize.py", line 209, in __init__
    super(SubprocessPopen, self).__init__(*args, **kwargs)
  File "C:\Users\Vincent\Anaconda3\lib\subprocess.py", line 707, in __init__
    restore_signals, start_new_session)
  File "C:\Users\Vincent\Anaconda3\lib\subprocess.py", line 992, in _execute_child
    startupinfo)
FileNotFoundError: [WinError 2] Le fichier spécifié est introuvable

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "C:\Users\Vincent\Anaconda3\lib\site-packages\matplotlib\backends\backend_qt5.py", line 505, in _draw_idle
    self.draw()
  File "C:\Users\Vincent\Anaconda3\lib\site-packages\matplotlib\backends\backend_agg.py", line 388, in draw
    self.figure.draw(self.renderer)
  File "C:\Users\Vincent\Anaconda3\lib\site-packages\matplotlib\artist.py", line 38, in draw_wrapper
    return draw(artist, renderer, *args, **kwargs)
  File "C:\Users\Vincent\Anaconda3\lib\site-packages\matplotlib\figure.py", line 1709, in draw
    renderer, self, artists, self.suppressComposite)
  File "C:\Users\Vincent\Anaconda3\lib\site-packages\matplotlib\image.py", line 135, in _draw_list_compositing_images
    a.draw(renderer)
  File "C:\Users\Vincent\Anaconda3\lib\site-packages\matplotlib\artist.py", line 38, in draw_wrapper
    return draw(artist, renderer, *args, **kwargs)
  File "C:\Users\Vincent\Anaconda3\lib\site-packages\matplotlib\axes\_base.py", line 2607, in draw
    self._update_title_position(renderer)
  File "C:\Users\Vincent\Anaconda3\lib\site-packages\matplotlib\axes\_base.py", line 2556, in _update_title_position
    if title.get_window_extent(renderer).ymin < top:
  File "C:\Users\Vincent\Anaconda3\lib\site-packages\matplotlib\text.py", line 890, in get_window_extent
    bbox, info, descent = self._get_layout(self._renderer)
  File "C:\Users\Vincent\Anaconda3\lib\site-packages\matplotlib\text.py", line 291, in _get_layout
    ismath="TeX" if self.get_usetex() else False)
  File "C:\Users\Vincent\Anaconda3\lib\site-packages\matplotlib\backends\backend_agg.py", line 201, in get_text_width_height_descent
    s, fontsize, renderer=self)
  File "C:\Users\Vincent\Anaconda3\lib\site-packages\matplotlib\texmanager.py", line 448, in get_text_width_height_descent
    dvifile = self.make_dvi(tex, fontsize)
  File "C:\Users\Vincent\Anaconda3\lib\site-packages\matplotlib\texmanager.py", line 338, in make_dvi
    texfile], tex)
  File "C:\Users\Vincent\Anaconda3\lib\site-packages\matplotlib\texmanager.py", line 308, in _run_checked_subprocess
    'found'.format(command[0])) from exc
RuntimeError: Failed to process string with tex because latex could not be found

Answer 1

我大约第5次取消安装并重新安装MikTeX，这一次我的问题解决了。运行python脚本时，三个窗口依次打开，要求安装软件包。我附上这三个窗口的答案屏幕截图。接受安装这些软件包后，我的脚本运行正常。以前，当取消安装并重新安装MikTeX时，我已经看到Windows要求安装并接受安装。我不知道为什么这次能用，而以前却没用... 无论如何，我的问题已解决，可以卸载并重新安装MiKTeX，运行我的脚本并接受软件包。

Window for installation of a file from type1cm

Window for installation of a file from iftex

Window for installation of a file from zhmetrics

无法在python绘图中使用乳胶-RuntimeError：LaTeX无法处理以下字符串：b'lp'

1 个答案: