如何在 tikzcd 中整理箭头图

Question

问题描述

我正在使用tikz-cd来绘制图表。我想将下面的图表变成对称的、美观的形式，但我不知道该怎么做。

梅威瑟：

\documentclass{article}
\usepackage{tikz-cd}
\begin{document}
\[\begin{tikzcd}
\text{M-Theory} \arrow[r, "\text{low-energy limit}"] \arrow[d, "g_s\to 0" ]
& \text{11d supergavity} \arrow[d, "\text{KK reduction on $S^1$}"] \\
\text{IIA} \arrow[r, "\text{low-energy limit}"]
& \text{IIA supergavity}
\end{tikzcd}\]
\end{document}

任何帮助将不胜感激！

Answer 1

与@Bernard 答案（+1）类似，但使用包makecell：

\documentclass{article}
\usepackage{amsmath}
\usepackage{tikz-cd}
\usepackage{makecell}

\begin{document}

\[ 
\linespread{0.75}
\begin{tikzcd}[column sep=huge,row sep=large]
\text{M-Theory} \rar["\text{\makecell{low-energy\\ limit}}"] \dar["g_s\to 0" ']
    & \text{11d supergravity} \dar["\text{\makecell{KK reduction\\ on $S^1$}}"]  \\
\text{IIA} \rar["\text{\makecell{low-energy\\ limit}}"]
    & \text{IIA supergravity}
\end{tikzcd}
\]

\end{document}

Answer 2

以下是借助该stackengine软件包可能找到的解决方案：

    \documentclass{article}
    \usepackage{amsmath}
    \usepackage{tikz-cd}
    \usepackage[usestackEOL]{stackengine}

    \begin{document}

    \[ \tikzcdset{column sep/normal=1.8cm, row sep/normal=2cm}
    \setstackgap{S}{1pt}
    \begin{tikzcd}
    \text{M-Theory} \arrow[r, "\footnotesize\Shortunderstack{low-energy\\ limit}"] \arrow[d,swap, "g_s\to 0" ]
    & \text{11d supergravity} \arrow[d, "\text{KK reduction on $S^1$}"] \\
    \text{IIA} \arrow[r, "\footnotesize\Shortunderstack{low-energy\\ limit}"]
    & \text{IIA supergravity}
    \end{tikzcd}\]

    \end{document} 

Answer 3

您可以增加列间距（以及行间距）

\documentclass{article}
\usepackage{amsmath}
\usepackage{tikz-cd}

\begin{document}

\[
\begin{tikzcd}[column sep=8em,row sep=3em]
\text{M-Theory} \arrow[r, "\text{low-energy limit}"] \arrow[d, "g_s\to 0" ]
& \text{11d supergravity} \arrow[d, "\text{KK reduction on $S^1$}"] \\
\text{IIA} \arrow[r, "\text{low-energy limit}"]
& \text{IIA supergravity}
\end{tikzcd}
\]

\end{document}

将标签拆分到多行不需要包：

\documentclass{article}
\usepackage{amsmath}
\usepackage{tikz-cd}

\begin{document}

\[
\begin{tikzcd}[column sep=5em,row sep=3em]
\text{M-Theory} \arrow[r, "\substack{\text{low-energy}\\\text{limit}}"] \arrow[d, "g_s\to 0" ]
& \text{11d supergravity} \arrow[d, "\substack{\text{KK reduction}\\\text{on $S^1$}}"] \\
\text{IIA} \arrow[r, "\substack{\text{low-energy}\\\text{limit}}"]
& \text{IIA supergravity}
\end{tikzcd}
\]

\end{document}