我的源代码的这个简化版本在通过 LaTeX 运行和使用 Emacs/Auctex 预览模式查看时会产生不同的结果。 我的问题是如何通过预览解决这个问题。
\documentclass{article}
\usepackage{siunitx}
\usepackage{amsmath}
\usepackage{circuitikz}
\usetikzlibrary{calc}
\newcommand{\marknode}[2][45]{%
\node[circle, draw, red, inner sep=1pt, pin={[red,
font=\tiny]#1:#2}] at (#2.center) {}; }
\begin{document}
\begin{figure}[h]
% \renewcommand{\marknode}{}
\centering
\begin{circuitikz}
\def\dx{3} \def\dy{4} \draw (0,0) node[ground,name=gnd] {} (gnd)
++(0,\dy) coordinate(a) to[american voltage source,
l_=$\begin{matrix} & + \\ & V_\textsc{s} \\ & \qty{10}{V} \\ & -
\end{matrix}$,name=Vs] (gnd)
(Vslabel) ++(-0.5,0) node[] {$I_\textsc{s} \big\uparrow$}
;
\marknode{a} \marknode{Vslabel}
\path (a) ++(\dx,0) coordinate(b);
\marknode{b}
\path ($(a)!0.5!(b)$) coordinate(c);
\marknode{c}
\end{circuitikz} \caption{Test circuit}
\label{fig:test-circuit}
\end{figure}
\end{document}
当通过 LaTeX 运行时，它看起来正如我所想的那样：
但是当使用预览查看时，它看起来像这样：
我尝试将第 22 行中的 partway 修饰符括在括号 {} 中。LaTeX 输出没有变化，但运行 preview-at-point (Cc Cp C_p) 会在 Emacs minimbuffer 中产生此错误：
以及大量的 Ghostscript 错误（416 行，我不愿意在这里给读者带来这些错误，但如果这有助于解决我的问题，我就会这样做。）
附加编辑：预览日志中的条目：
l.16 \begin{figure}
[h]
./_region_.tex:27: Missing \endcsname inserted.
<to be read again>
\pr@$
l.27 \path ($(a)
!0.5!(b)$) coordinate(c);
./_region_.tex:27: Missing \endcsname inserted.
<to be read again>
\pr@$
l.27 \path ($(a)
!0.5!(b)$) coordinate(c);
Missing character: There is no a in font nullfont!
./_region_.tex:27: Extra \endcsname.
\pgfutil@ifundefined ...@ifx \csname #1\endcsname
\relax
l.27 \path ($(a)
!0.5!(b)$) coordinate(c);
./_region_.tex:27: Missing \endcsname inserted.
<to be read again>
\pr@$
l.27 \path ($(a)
!0.5!(b)$) coordinate(c);
Missing character: There is no a in font nullfont!
./_region_.tex:27: Extra \endcsname.
\pgfutil@ifundefined ...@ifx \csname #1\endcsname
\relax
l.27 \path ($(a)
!0.5!(b)$) coordinate(c);
./_region_.tex:27: Package pgf Error: No shape named `$(a' is known.
See the pgf package documentation for explanation.
Type H <return> for immediate help.
...
l.27 \path ($(a)
!0.5!(b)$) coordinate(c);
./_region_.tex:27: Missing \endcsname inserted.
<to be read again>
\pr@$
l.27 \path ($(a)
!0.5!(b)$) coordinate(c);
./_region_.tex:27: Extra \endcsname.
<argument> ...$(a}\csname pgf@sh@ma@$(a\endcsname
\csname pgf@sh@np@$(a\endc...
l.27 \path ($(a)
!0.5!(b)$) coordinate(c);
./_region_.tex:27: Missing \endcsname inserted.
<to be read again>
\pr@$
l.27 \path ($(a)
!0.5!(b)$) coordinate(c);
Missing character: There is no ( in font nullfont!
Missing character: There is no a in font nullfont!
./_region_.tex:27: Extra \endcsname.
<argument> ...ame \csname pgf@sh@np@$(a\endcsname
\pgf@sh@reanchor {\csname ...
l.27 \path ($(a)
!0.5!(b)$) coordinate(c);
./_region_.tex:27: Missing \endcsname inserted.
<to be read again>
\pr@$
l.27 \path ($(a)
!0.5!(b)$) coordinate(c);
./_region_.tex:27: Missing \endcsname inserted.
<to be read again>
\pgf@sh@ns@
l.27 \path ($(a)
!0.5!(b)$) coordinate(c);
./_region_.tex:27: Extra \endcsname.
<argument> ...hor@\csname pgf@sh@ns@$(a\endcsname
@center
l.27 \path ($(a)
!0.5!(b)$) coordinate(c);
./_region_.tex:27: Extra \endcsname.
\pgfutil@ifundefined ...@ifx \csname #1\endcsname
\relax
l.27 \path ($(a)
!0.5!(b)$) coordinate(c);
./_region_.tex:27: Package PGF Math Error: Unknown function `center' (in 'center').
See the PGF Math package documentation for explanation.
Type H <return> for immediate help.
...
l.27 \path ($(a)
!0.5!(b)$) coordinate(c);
./_region_.tex:27: Missing \endcsname inserted.
<to be read again>
\pr@$
l.27 \path ($(a)
!0.5!(b)$) coordinate(c);
./_region_.tex:27: Missing \endcsname inserted.
<to be read again>
\pgf@sh@ns@
l.27 \path ($(a)
!0.5!(b)$) coordinate(c);
./_region_.tex:27: Missing } inserted.
<inserted text>
}
l.27 \path ($(a)
!0.5!(b)$) coordinate(c);
Missing character: There is no ( in font nullfont!
Missing character: There is no a in font nullfont!
./_region_.tex:27: Extra \endcsname.
<argument> ...hor@\csname pgf@sh@ns@$(a\endcsname
@border\endcsname {\pgfqpo...
l.27 \path ($(a)
!0.5!(b)$) coordinate(c);
Missing character: There is no @ in font nullfont!
Missing character: There is no b in font nullfont!
Missing character: There is no o in font nullfont!
Missing character: There is no r in font nullfont!
Missing character: There is no d in font nullfont!
Missing character: There is no e in font nullfont!
Missing character: There is no r in font nullfont!
./_region_.tex:27: Extra \endcsname.
<argument> ...@ns@$(a\endcsname @border\endcsname
{\pgfqpointpolar {\the \c@...
l.27 \path ($(a)
!0.5!(b)$) coordinate(c);
./_region_.tex:27: Missing \endcsname inserted.
<to be read again>
\pr@$
l.27 \path ($(a)
!0.5!(b)$) coordinate(c);
./_region_.tex:27: Missing \endcsname inserted.
<to be read again>
\pgf@sh@ns@
l.27 \path ($(a)
!0.5!(b)$) coordinate(c);
./_region_.tex:27: Extra \endcsname.
<argument> \csname pgf@sh@ns@$(a\endcsname
l.27 \path ($(a)
!0.5!(b)$) coordinate(c);
./_region_.tex:27: Extra \endcsname.
\pgf@sh@reanchor ...me pgf@anchor@#1@#2\endcsname
}
l.27 \path ($(a)
!0.5!(b)$) coordinate(c);
./_region_.tex:27: Extra }, or forgotten $.
\pgf@sh@reanchor ...e pgf@anchor@#1@#2\endcsname }
l.27 \path ($(a)
!0.5!(b)$) coordinate(c);
./_region_.tex:27: Missing \endcsname inserted.
<to be read again>
\pr@$
l.27 \path ($(a)
!0.5!(b)$) coordinate(c);
./_region_.tex:27: Missing number, treated as zero.
<to be read again>
\endcsname
l.27 \path ($(a)
!0.5!(b)$) coordinate(c);
./_region_.tex:27: Illegal unit of measure (pt inserted).
<to be read again>
\endcsname
l.27 \path ($(a)
!0.5!(b)$) coordinate(c);
./_region_.tex:27: Extra \endcsname.
<recently read> \endcsname
l.27 \path ($(a)
!0.5!(b)$) coordinate(c);
./_region_.tex:27: Missing number, treated as zero.
<to be read again>
\global
l.27 \path ($(a)
!0.5!(b)$) coordinate(c);
./_region_.tex:27: Illegal unit of measure (pt inserted).
<to be read again>
\global
l.27 \path ($(a)
!0.5!(b)$) coordinate(c);
./_region_.tex:27: Missing \endcsname inserted.
<to be read again>
\pr@$
l.27 \path ($(a)
!0.5!(b)$) coordinate(c);
./_region_.tex:27: Missing \endcsname inserted.
<to be read again>
\pr@$
l.27 \path ($(a)
!0.5!(b)$) coordinate(c);
./_region_.tex:27: Missing \endcsname inserted.
<to be read again>
\pgf@sh@pi@
l.27 \path ($(a)
!0.5!(b)$) coordinate(c);
Missing character: There is no ( in font nullfont!
Missing character: There is no a in font nullfont!
./_region_.tex:27: Extra \endcsname.
\pgf@marshal ...s@ \pgf@sh@pi@ \pr@$ (a\endcsname
\endcsname
l.27 \path ($(a)
!0.5!(b)$) coordinate(c);
./_region_.tex:27: Extra \endcsname.
\pgf@marshal ...pi@ \pr@$ (a\endcsname \endcsname
l.27 \path ($(a)
!0.5!(b)$) coordinate(c);
./_region_.tex:27: Undefined control sequence.
<argument> ...pointorigin \pgf@shape@original@pos
l.27 \path ($(a)
!0.5!(b)$) coordinate(c);
./_region_.tex:27: Missing \endcsname inserted.
<to be read again>
\pr@$
l.27 \path ($(a)
!0.5!(b)$) coordinate(c);
./_region_.tex:27: Extra \endcsname.
\pgfutil@next ...@ns@\tikz@pp@name {#2}\endcsname
\expandafter \ifx \csname ...
l.27 \path ($(a)
!0.5!(b)$) coordinate(c);
./_region_.tex:27: Missing \endcsname inserted.
<to be read again>
\pr@$
l.27 \path ($(a)
!0.5!(b)$) coordinate(c);
./_region_.tex:27: Package tikz Error: Giving up on this path. Did you forget a semicolon?.
See the tikz package documentation for explanation.
Type H <return> for immediate help.
...
l.27 \path ($(a)!
0.5!(b)$) coordinate(c);
./_region_.tex:27: Missing $ inserted.
<inserted text>
$
l.27 \path ($(a)!
0.5!(b)$) coordinate(c);
Missing character: There is no ! in font nullfont!
Missing character: There is no 0 in font nullfont!
Missing character: There is no . in font nullfont!
Missing character: There is no 5 in font nullfont!
Missing character: There is no ! in font nullfont!
Missing character: There is no ( in font nullfont!
Missing character: There is no b in font nullfont!
Missing character: There is no ) in font nullfont!
./_region_.tex:29: Missing $ inserted.
<inserted text>
$
l.29 \end{circuitikz}
\caption{Test circuit}
Preview: Tightpage -32891 -32891 32891 32891
./_region_.tex:31: Preview: Snippet 1 ended.(11449270+0x22609920).
<-><->
l.31 \end{figure}
答案1
我隐约记得预览和 tikz 总是因为处理和/或期望而出现一些问题$。我认为你有两个选择：
- 禁用
textmath预览并获取 tikz 图形，或者 - 将您的 tikz 图形导出到文件中并将其作为图形重新包含回来。
对于 1.，在 Emacs 中看起来像这样：
对于 2，我创建了一个standalone-test.tex如下的新文件：
\documentclass[crop=true]{standalone}
\usepackage{siunitx}
\usepackage{amsmath}
\usepackage{circuitikz}
\usetikzlibrary{calc}
\newcommand{\marknode}[2][45]{%
\node[circle, draw, red, inner sep=1pt,
pin={[red, font=\tiny]#1:#2}
] at (#2.center) {};
}
\begin{document}
\begin{circuitikz}
\def\dx{3} \def\dy{4} \draw (0,0) node[ground,name=gnd] {} (gnd)
++(0,\dy) coordinate(a) to[american voltage source,
l_=$\begin{matrix} & + \\ & V_\textsc{s} \\ & \qty{10}{V} \\ & -
\end{matrix}$,name=Vs] (gnd)
(Vslabel) ++(-0.5,0) node[] {$I_\textsc{s} \big\uparrow$}
;
\marknode{a} \marknode{Vslabel}
\path (a) ++(\dx,0) coordinate(b);
\marknode{b}
\path ($(a)!0.5!(b)$) coordinate(c);
\marknode{c}
\end{circuitikz}
\end{document}
%%% Local Variables:
%%% mode: latex
%%% TeX-master: t
%%% End:
并将您的 .tex 文件更改为：
\documentclass{article}
\usepackage[textmath,displaymath,footnotes,sections,floats]{preview}
\usepackage{graphicx}
\begin{document}
Here we go with $a+b=c$.
\begin{figure}[h]
\centering
\includegraphics[page=1]{standalone-test}
\caption{Test circuit}
\label{fig:test-circuit}
\end{figure}
\end{document}
%%% Local Variables:
%%% mode: latex
%%% TeX-master: t
%%% End:
在 Emacs 和预览中看起来像这样：
