Is there a command/package that allows one to cross out arrows? I'm picturing something like an "X" over the $\to$ symbol. I am aware of the ulem package, which I think allows you to cross out text with a horizontal line, but that doesn't seem to work as well over arrows.
[Tex/LaTex] Crossing out arrows
symbols
Related Solutions
The following code is a modification of the definition of cspst. I just removed the arc and the arrow.
\documentclass{minimal}
\usepackage{circuitikz}
% modified code from pgfcircbipoles.sty and circuitikz1.code.tex
\makeatletter
% create the shape
\pgfcircdeclarebipole{}{\ctikzvalof{bipoles/interr/height 2}}{spst}{\ctikzvalof{bipoles/interr/height}}{\ctikzvalof{bipoles/interr/width}}{
\pgfsetlinewidth{\pgfkeysvalueof{/tikz/circuitikz/bipoles/thickness}\pgfstartlinewidth}
\pgfpathmoveto{\pgfpoint{\pgf@circ@res@left}{0pt}}
\pgfpathlineto{\pgfpoint{.6\pgf@circ@res@right}{\pgf@circ@res@up}}
\pgfusepath{draw}
}
% make the shape accessible with nice syntax
\def\pgf@circ@spst@path#1{\pgf@circ@bipole@path{spst}{#1}}
\tikzset{switch/.style = {\circuitikzbasekey, /tikz/to path=\pgf@circ@spst@path, l=#1}}
\tikzset{spst/.style = {switch = #1}}
\makeatother
\begin{document}
\begin{circuitikz}
\draw (0,0) to[switch, l=$t_0$] (2,0)
to[spst] (2,-2);
\end{circuitikz}
\end{document}
Here is slightly automated solution using tikz. I measure the height and width of the text and place an arc whose size is based on the maximum of that. Am sure this can be improved, but this should get you started:
\documentclass{article}
\usepackage{amsmath}
\usepackage{tikz}
\usepackage{calc}
\makeatletter
\newlength\@SizeOfCirc%
\newcommand{\CricArrowRight}[1]{%
\setlength{\@SizeOfCirc}{\maxof{\widthof{#1}}{\heightof{#1}}}%
\tikz [x=1.0ex,y=1.0ex,line width=.15ex, draw=blue]%
\draw [->,anchor=center]%
node (0,0) {#1}%
(0,1.2\@SizeOfCirc) arc (85:-240:1.2\@SizeOfCirc);%
}%
\makeatother
\begin{document}
\CricArrowRight{$i$}
\CricArrowRight{$i_3$}
\CricArrowRight{$\frac{a}{b}$}
\CricArrowRight{$\dfrac{a}{b}$}
\end{document}
I created a temporary length \@SizeOfCirc so as to minimize potential name conflicts, and need to use \maktatother. See What do \makeatletter and \makeatother do? for more info if you are not familiar with that.
Best Answer
Most mathematical symbols allow negation via the
\notprefix. For example, consider the look ofThere is also
centernotwhich looks similar to\not=in the above case, yet different (perhaps not-so-good) from\not\to.Alternatively, Scott Pakin's Comprehensive Symbol List has a vast amount of mathematical symbols and their associated fonts/package inclusions.