我试着编译以下代码:
class I3(Scene):
def construct(self):
z = Tex("e^{itheta}=cos(theta)+isin(theta)")
self.add(z)
self.wait(5)
但是我得到了这个错误:
ValueError: latex error converting to dvi. See log output above or the log file: media/Tex/d946638dc8ff7097.log
提到的.log文件是:
This is pdfTeX, Version 3.141592653-2.6-1.40.24 (MiKTeX 22.3) (preloaded format=latex 2022.7.16) 17 JUL 2022 18:20
entering extended mode
restricted write18 enabled.
%&-line parsing enabled.
**./media/Tex/d946638dc8ff7097.tex
(media/Tex/d946638dc8ff7097.tex
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! Missing $ inserted.
<inserted text>
$
l.27 e^
{i heta}=cos( heta)+isin( heta)
Here is how much of TeX's memory you used:
8382 strings out of 478352
131308 string characters out of 2846893
474783 words of memory out of 3000000
26693 multiletter control sequences out of 15000+600000
478062 words of font info for 34 fonts, out of 8000000 for 9000
1141 hyphenation exceptions out of 8191
72i,2n,77p,1025b,170s stack positions out of 10000i,1000n,20000p,200000b,80000s
No pages of output.
下面的代码可以正常工作:
class I3(Scene):
def construct(self):
z = Tex("LaTeX")
self.add(z)
self.wait(5)
这让我相信有一些丢失的包，经过一些挖掘，我看到一些人建议在manimlib文件夹中运行latex tex_template.tex，但我在计算机上找不到这个文件夹。是什么导致了这个问题，我该如何解决它?
您没有提到您使用的是manimgl还是社区维护的Manim版本，但从错误判断，我猜您正在运行社区维护的版本(from manim import *)。
在这种情况下，Tex在正常模式下呈现TeX,MathTex在align*环境中插入字符串(因此，在数学模式下)。这就是日志文件末尾的错误所抱怨的内容:
! Missing $ inserted.
<inserted text>
$
l.27 e^
{i heta}=cos( heta)+isin( heta)
这实际上也揭示了代码的第二个问题，考虑到t已经被空格取代:是Python字符串中的一个特殊字符;要实际编写，您需要通过编写\来转义它——或者，或者，通过在字符串之前放置r来使用原始字符串。
TL;DR，这是你想要的:
class I3(Scene):
def construct(self):
z = MathTex(r"e^{itheta}=cos(theta)+isin(theta)")
self.add(z)
self.wait(5)