【发布时间】：2015-09-21 17:34:59
【问题描述】：
这是我从底部提供的函数中得到的错误：
'latex' is not recognized as an internal or external command,
operable program or batch file.
Exception in Tkinter callback
Traceback (most recent call last):
File "C:\python27\lib\lib-tk\Tkinter.py", line 1486, in __call__
return self.func(*args)
File "C:\python27\lib\site-packages\matplotlib\backends\backend_tkagg.py", lin
e 278, in resize
self.show()
File "C:\python27\lib\site-packages\matplotlib\backends\backend_tkagg.py", lin
e 349, in draw
FigureCanvasAgg.draw(self)
File "C:\python27\lib\site-packages\matplotlib\backends\backend_agg.py", line
469, in draw
self.figure.draw(self.renderer)
File "C:\python27\lib\site-packages\matplotlib\artist.py", line 59, in draw_wr
apper
draw(artist, renderer, *args, **kwargs)
File "C:\python27\lib\site-packages\matplotlib\figure.py", line 1079, in draw
func(*args)
File "C:\python27\lib\site-packages\matplotlib\artist.py", line 59, in draw_wr
apper
draw(artist, renderer, *args, **kwargs)
File "C:\python27\lib\site-packages\matplotlib\axes\_base.py", line 2092, in d
raw
a.draw(renderer)
File "C:\python27\lib\site-packages\matplotlib\artist.py", line 59, in draw_wr
apper
draw(artist, renderer, *args, **kwargs)
File "C:\python27\lib\site-packages\matplotlib\axis.py", line 1116, in draw
renderer)
File "C:\python27\lib\site-packages\matplotlib\axis.py", line 1065, in _get_ti
ck_bboxes
extent = tick.label1.get_window_extent(renderer)
File "C:\python27\lib\site-packages\matplotlib\text.py", line 741, in get_wind
ow_extent
bbox, info, descent = self._get_layout(self._renderer)
File "C:\python27\lib\site-packages\matplotlib\text.py", line 311, in _get_lay
out
ismath=False)
File "C:\python27\lib\site-packages\matplotlib\backends\backend_agg.py", line
223, in get_text_width_height_descent
renderer=self)
File "C:\python27\lib\site-packages\matplotlib\texmanager.py", line 670, in ge
t_text_width_height_descent
dvifile = self.make_dvi(tex, fontsize)
File "C:\python27\lib\site-packages\matplotlib\texmanager.py", line 417, in ma
ke_dvi
report))
RuntimeError: LaTeX was not able to process the following string:
'lp'
Here is the full report generated by LaTeX:
这是我正在使用的导致上述错误的函数：
def Derivative( inputArrayList,rowNumber_from_top ):
for image in inputArrayList:
rowValues = image[0][rowNumber_from_top]
for i in range(len(rowValues)):
# Perform the difference derivative estimation
if i == 0 or i == (len(rowValues) - 1):
rowValues[ i ] = 0 # set edges to 0
else:
derivative = (rowValues[ i+1 ] - rowValues[ i-1 ])/(2.0)
rowValues[ i ] = derivative
plt.rc('text', usetex=True)
plt.rc('font', family='serif')
plt.plot(rowValues,color="k")
plt.ylim( (0,image.max() + 10.0) )
plt.title(r"$\displaystyle\sum_{n=1}^\infty\frac{-e^{i\pi}}{2^n}$")
plt.show()
注意plt.title(r"$\displaystyle\sum_{n=1}^\infty\frac{-e^{i\pi}}{2^n}$") 这一行。我从 Matplotlib 网站上的 first graph 获取了这个（我也尝试过运行他们提供的那个程序），但我似乎无法让它工作。我几乎可以肯定这是一个简单的修复（比如我可能缺少 LaTeX 模块或其他东西？）。
整个目标是能够在情节的标题和标签中使用命令\displaystyle 来增大分数。
如果这是重复的，我深表歉意（尽管我找不到类似的问题），我只需要一个指针来让我朝着正确的方向前进。
感谢您的宝贵时间，
布兰登
【问题讨论】：
-
“这是 LaTeX 生成的完整报告：”之后是否有任何内容？你也可以看看这是否有帮助：stackoverflow.com/questions/11354149/…
-
@AmyTeegarden 不幸的是，不，在“这是 LaTeX 生成的完整报告：”之后，它是空白的。感谢您的链接！我去看看type1cm。
-
你可以直接在 LaTeX 中处理该行，而不是通过 matplotlib 运行吗？如果它不调用
\displaystyle，你能处理它吗？可以运行使用 LaTeX 的 Matplotlib 库示例代码吗？ -
有人找到答案了吗？我有同样的问题。已尝试安装相关软件包和大量谷歌搜索。
-
@WadeBratz 我认为这是解决方案：stackoverflow.com/a/11357765/3928184
标签： python python-2.7 matplotlib