这两条线该怎么画呢？

Question

这两条线该怎么画呢？

\documentclass[twocolumn]{ltxdoc}
\usepackage{amsmath}
\usepackage{lipsum}

\begin{document}
\begin{equation}
    Trans_{z_{n-1}}(d_n) = \begin{bmatrix}
    
    1 & 0 & 0 & 0 \\
0 & 1 & 0 & 0\\
0 & 0 & 1 & d_{n}\\
0 & 0 & 0 & 1

    \end{bmatrix}
    
\end{equation}
\end{document}

我现在的版本是这样的：

Answer 1

您可以tabularray像这样使用该包：

\documentclass{article}
\usepackage{tabularray}
\UseTblrLibrary{amsmath}

\begin{document}
\begin{equation}
    \text{Trans}_{z_{n-1}}(d_n) = 
    \begin{+bmatrix}[
      hline{Y} = {solid},
      vline{Y} = {solid}
    ]
      1 & 0 & 0 & 0 \\
      0 & 1 & 0 & 0\\
      0 & 0 & 1 & d_{n}\\
      0 & 0 & 0 & 1
    \end{+bmatrix}
\end{equation}
\end{document}

Answer 2

和nicematrix：

\documentclass{article}
\usepackage{nicematrix}

\begin{document}
\[ 
\mathrm{Trans}_{z_{n-1}}(d_n) = 
\begin{bNiceArray}{ccc|c}[margin]
1 & 0 & 0 & 0 \\
0 & 1 & 0 & 0\\
0 & 0 & 1 & d_{n}\\
\hline
0 & 0 & 0 & 1 \\
\end{bNiceArray}
\]
\end{document}

Answer 3

\documentclass[twocolumn]{ltxdoc}
\usepackage{amsmath}
\usepackage{lipsum}

\begin{document}
\begin{equation}
    Trans_{z_{n-1}}(d_n) = \left[\begin{array}{ccc@{\enskip\vrule\enskip}c}
    1 & 0 & 0 & 0 \\
0 & 1 & 0 & 0\\
0 & 0 & 1 & d_{n}\\
\hline
0 & 0 & 0 & 1
    \end{array}\right]
\end{equation}

\end{document}