彩色矩阵标题

Question

有没有一种简单的方法可以使用 LaTeX 创建这个矩阵？

Answer 1

一定要叫矩阵吗？还是表格也可以？

\documentclass{article}

\usepackage[table]{xcolor}
\usepackage{bigdelim}

\begin{document}

\begin{tabular}{l c c c c l}
   & & \color{blue}From: & & & \\
   & \color{blue}D & \color{blue}R & \color{blue}L & & \color{blue}To: \\
   \ldelim[{3}{*}[P = ] & .70 & .10 & .30 &\rdelim]{3}{*} & \color{blue}D \\
   & .20 & .80 & .30 & & \color{blue}R \\
   & .10 & .10 & .40 & & \color{blue}L \\
\end{tabular}

\end{document}

Answer 2

\documentclass{article}   
\usepackage[table]{xcolor}
\usepackage{bigdelim}    
\begin{document}

\begin{tabular}{l c c c c >{\color{blue}}l}
                     & & \color{blue}From: \\
                     & \color{blue}D      & \color{blue}R & \color{blue}L & & To: \\
\ldelim[{3}{*}[P = ] & .70 & .10 & .30 &\rdelim]{3}{*} & D \\
                     & .20 & .80 & .30 & & R \\
                     & .10 & .10 & .40 & & L \\
\end{tabular}

\end{document}

Answer 3

您将需要昨天的 [2016-11-30]tabstackengine版本 V2.01 才能如此简单地完成此操作。

\documentclass{article}
\usepackage{tabstackengine}[2016-11-30]
\usepackage{xcolor}
\begin{document}
\[
\fixTABwidth{T}
\savestack\thematrix{$\bracketMatrixstack{~~.70~~ & .10 & .30\\.20&.80&.30\\.10&.10&.40}$}
P = \color{cyan}\stackon{\thematrix}{
  \stackon[5pt]{\makebox[\maxTABwd]{D}\makebox[\maxTABwd]{R}\makebox[\maxTABwd]{L}}{From:}
} ~~\renewcommand\stackalignment{l}\stackon{\Centerstack[c]{D\\R\\L}}{To:}
\]
\end{document}

还有一种变体：

\documentclass{article}
\usepackage{tabstackengine}[2016-11-30]
\usepackage{xcolor}
\begin{document}
\[
\setstacktabbedgap{2ex}
\setstackgap{L}{1.2\baselineskip}
\savestack\thematrix{$\bracketMatrixstack{.70 & .10 & .30\\.20&.80&.30\\.10&.10&.40}$}
P = \color{cyan}\stackon[6pt]{\thematrix}{
  \stackon[5pt]{%
    \makebox[\TABwd{1}]{D}\kern2ex\makebox[\TABwd{2}]{R}\kern2ex\makebox[\TABwd{3}]{L}}{From:}
} ~~\renewcommand\stackalignment{l}\stackon[6pt]{\Centerstack[c]{D\\R\\L}}{To:}
\]
\end{document}

Answer 4

这里有一个blkarray执行：

\documentclass{article}

\usepackage{blkarray,xcolor}
\newcommand{\chead}[1]{\mbox{\small\color{cyan}#1}}

\begin{document}

\[
  \begin{blockarray}{ r @{} *{3}{c} >{\color{cyan}}c }
         &     & \chead{\makebox[0pt]{From:}} \\
         & \chead{$D$} & \chead{$R$} & \chead{$L$} & \chead{\makebox[0pt]{To:}} \\
    \begin{block}{ r @{} [ *{3}{c} ] >{\color{cyan}}c }
         & .70 & .10 & .30 & D \\
    P =~ & .20 & .80 & .30 & R \\
         & .10 & .10 & .40 & L \\
    \end{block}
  \end{blockarray}
\]

\end{document}