![节点和文本定位](https://linux22.com/image/290942/%E8%8A%82%E7%82%B9%E5%92%8C%E6%96%87%E6%9C%AC%E5%AE%9A%E4%BD%8D.png)
我想tikz
在数学模式下使用文本绘制圆圈节点,该文本具有以下结构。一个变量加上可能的下标和/或上标。无论我是否添加下标或上标,我希望变量在圆圈内的位置完全相同。
我已完成以下操作:
\documentclass[12pt]{article}
\usepackage{amsmath,mathtools,calc}
\usepackage{tikz}\usetikzlibrary{positioning}
\newcommand{\supe}[1]{\smash{\mathrlap[\scriptstyle]{^{\ensuremath{#1}}}}}
\newcommand{\indi}[1]{\smash{\mathrlap[\scriptstyle]{_{\ensuremath{#1}}}}}
\newcommand{\suin}[2]{\smash{\mathrlap[\scriptstyle]{^{\ensuremath{#1}}_{\ensuremath{#2}}}}}
\begin{document}
\begin{tikzpicture}
\begin{scope}[every circle node/.style={circle,draw,minimum height=1cm}]
\node [circle] (p) at (1,1) {$p$} ;
\node [circle,right= of p] (r1) {$p\indi{1}$} ;
\node [circle,right= of r1] (r2) {$p\supe{2}$} ;
\node [circle,right= of r2] (r3) {$r\suin{1}{3}$} ;
\end{scope}
\end{tikzpicture}
\end{document}
这似乎效果很好,但我想知道是否有更佳tikz
的方法来实现相同的结果。
答案1
虽然不是更 TikZy 的方式,但无论如何都是更好的 LaTeX:
\documentclass[12pt]{article}
\usepackage{amsmath,mathtools,calc}
\usepackage{tikz}\usetikzlibrary{positioning}
\newcommand{\supe}[1]{^{\smash{\mathrlap{#1}}}}
\newcommand{\indi}[1]{_{\smash{\mathrlap{#1}}}}
\newcommand{\suin}[2]{\supe{#1}\indi{#2}}
\begin{document}
\begin{tikzpicture}
\begin{scope}[every circle node/.style={circle,draw,minimum height=1cm}]
\node [circle] (p) at (1,1) {$p$} ;
\node [circle,right= of p] (r1) {$p\indi{1}$} ;
\node [circle,right= of r1] (r2) {$p\supe{2}$} ;
\node [circle,right= of r2] (r3) {$r\suin{1}{3}$} ;
\end{scope}
\end{tikzpicture}
\end{document}
请注意,通过这种方式,您要将上标和下标设置在它们所属的位置,而不是像代码中那样设置在空公式中。
更简单的版本,相同的结果:
\documentclass[12pt]{article}
\usepackage{amsmath,mathtools,calc}
\usepackage{tikz}\usetikzlibrary{positioning}
\newcommand{\fixedwidth}[2]{%
\makebox[\widthof{$#1$}][l]{\vphantom{$#1$}\smash{$#1#2$}}%
}
\begin{document}
\begin{tikzpicture}
\begin{scope}[every circle node/.style={circle,draw,minimum height=1cm}]
\node [circle] (p) at (1,1) {$p$} ;
\node [circle,right= of p] (r1) {\fixedwidth{p}{_1}} ;
\node [circle,right= of r1] (r2) {\fixedwidth{p}{^2}} ;
\node [circle,right= of r2] (r3) {\fixedwidth{r}{^1_3}} ;
\end{scope}
\end{tikzpicture}
\end{document}
答案2
我认为没有内置任何特定功能TikZ
来简化此问题。也许您可以使用TikZ
进行放置来获得此效果,但这肯定不会比在 之外实现相同效果更容易TikZ
。
但是,我认为你只用一个宏就可以做到:
\newcommand{\Smash}[1]{\smash{\mathrlap[\scriptstyle]{#1}}}
并将您的输出与仅使用的输出进行比较\Smash
:
代码:
\documentclass[12pt]{article}
\usepackage{amsmath,mathtools,calc}
\usepackage{tikz}\usetikzlibrary{positioning}
\newcommand{\supe}[1]{\smash{\mathrlap[\scriptstyle]{^{\ensuremath{#1}}}}}
\newcommand{\indi}[1]{\smash{\mathrlap[\scriptstyle]{_{\ensuremath{#1}}}}}
\newcommand{\suin}[2]{\smash{\mathrlap[\scriptstyle]{^{\ensuremath{#1}}_{\ensuremath{#2}}}}}
\newcommand{\Smash}[1]{\smash{\mathrlap[\scriptstyle]{#1}}}
\begin{document}
Original version:
\begin{tikzpicture}
\begin{scope}[every circle node/.style={circle,draw,minimum height=1cm}]
\node [circle] (p) at (1,1) {$p$} ;
\node [circle,right= of p] (r1) {$p\indi{1}$} ;
\node [circle,right= of r1] (r2) {$p\supe{2}$} ;
\node [circle,right= of r2] (r3) {$r\suin{1}{3}$} ;
\end{scope}
\end{tikzpicture}
Simplified version:
\begin{tikzpicture}
\begin{scope}[every circle node/.style={circle,draw,minimum height=1cm}]
\node [circle] (p) at (1,1) {$p$} ;
\node [circle,right= of p] (r1) {$p\Smash{_1}$} ;
\node [circle,right= of r1] (r2) {$p\Smash{^2}$} ;
\node [circle,right= of r2] (r3) {$r\Smash{^{1}_{3}}$} ;
\end{scope}
\end{tikzpicture}
\end{document}
答案3
也许我忽略了一些东西,我不知道为什么这没有被采纳,但text depth
似乎已经足够了。
\documentclass[border=5mm]{standalone}
\usepackage{mathtools}
\usepackage{tikz}
\usetikzlibrary{positioning}
\begin{document}
\begin{tikzpicture}
\begin{scope}[
every circle node/.style={
draw,
inner sep=2pt,
text depth=0.45ex,
text height=1.35ex,
minimum size=1cm
}
]
\node [circle] (p) at (1,1) {$p$};
\node [circle,right= of p] (r1) {$p_1$};
\node [circle,right= of r1] (r2) {$p^2$};
\node [circle,right= of r2] (r3) {$r_1^3$};
\node [circle,below= 3mm of p] (r4) {$A_1^3$};
\node [circle,right= of r4] (r5) {$M_M^M$};
\node [circle,right= of r5] (r6) {$M_p^h$};
\end{scope}
\end{tikzpicture}
\end{document}