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矩阵的全局数学模式

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矩阵的全局数学模式

我有以下代码来生成一个有效的矩阵：

\begin{center}
\begin{tikzpicture}[cell/.style={rectangle,draw=black}, nodes in empty cells]
  \matrix[
  matrix of nodes,
  row sep =-\pgflinewidth,
  column sep = -\pgflinewidth,
  nodes={anchor=center, text height=1.3ex,text depth=0, cell},
  column 1/.style = {nodes={minimum width=1cm, fill=mlightgray}},
  column 2/.style = {nodes={minimum width=2cm}},
  column 3/.style = {nodes={minimum width=2cm}},
  column 4/.style = {nodes={minimum width=2cm}},
  row 1/.style={nodes={fill=mlightgray}}
  ] 
  {     & $3$  & $4$    & $5$    \\
    $3$ &      &        & $100$  \\
    $4$ & $-2$ & $-2.6$ & $97.4$ \\
  };
\end{tikzpicture}
\end{center}

正如您所注意到的，所有节点的值都被$（数学模式）包围，是否有人知道如何在矩阵周围放置全局数学模式，以避免$每个节点都绑定？

答案1

您可以使用matrix of math nodes而不是matrix of nodes然后节点内容将$自动被 包围。

\documentclass{article}
\usepackage{tikz}
\usetikzlibrary{matrix}

\colorlet{mlightgray}{gray!20}

\begin{document}
  \begin{center}
\begin{tikzpicture}[cell/.style={rectangle,draw=black}, nodes in empty cells]
  \matrix[
  matrix of math nodes,
  row sep =-\pgflinewidth,
  column sep = -\pgflinewidth,
  nodes={anchor=center,minimum width=2cm, text height=1.3ex,text depth=0, cell},
  column 1/.style = {nodes={minimum width=1cm, fill=mlightgray}},
  %column 2/.style = {nodes={minimum width=2cm}},
%  column 3/.style = {nodes={minimum width=2cm}},
%  column 4/.style = {nodes={minimum width=2cm}},
  row 1/.style={nodes={fill=mlightgray}}
  ]
  {     & 3  & 4    & 5    \\
    3 &      &        & 100  \\
    4 & -2 & -2.6 & 97.4 \\
  };
\end{tikzpicture}
\end{center}
\end{document}

在此处输入图片描述

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