384. LaTeX技巧274：如何在表格外使用大括号

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如下图，在表格外绘制使用大括号。

方法一：
\documentclass[spanish]{article}
\usepackage[T1]{fontenc}
\usepackage[latin9]{inputenc}

\makeatletter
\usepackage{tabularx}
\usepackage{arydshln}
\usepackage{MnSymbol}

\renewcommand{\tabcolsep}{0pt}
\newcolumntype{C}{>{\centering}m{16pt}}

\makeatother

\usepackage{babel}
\addto\shorthandsspanish{\spanishdeactivate{~<>}}

\begin{document}
\begin{table}
\begin{center}
\begin{tabular}{m{2pt}C|C|C|C:m{50pt}|C|}
& \multicolumn{1}{C}{} & \multicolumn{1}{C}{} & \multicolumn{1}{C}{$L_{a}$} & \multicolumn{1}{C}{} & \multicolumn{1}{C}{} & \multicolumn{1}{C}{}\\[-3pt]
& \multicolumn{1}{C}{} & \multicolumn{1}{C}{} & \multicolumn{1}{C}{$\overbrace{\,\quad}$} & \multicolumn{1}{C}{} & \multicolumn{1}{C}{} & \multicolumn{1}{C}{}\\[-6pt]
\cline{3-7}
$R_{a}$ & $\hspace*{10pt}\left.\left\{ \right.\right.$ & & $a$ & & &\\
\cline{3-7}
& & & & & &\\
\cline{3-7}
& & & & & &\\
\cdashline{3-7}
& & & & & &\\
\cline{3-7}
& & & & & &\\
\cline{3-7}
\end{tabular}
\end{center}
\end{table}
\end{document}

方法二：

\documentclass[10pt]{scrartcl}

\usepackage{pgf}
\usepackage{tikz}
\usepackage{rotating}

\begin{document}

\usetikzlibrary{arrows,decorations,backgrounds}
\begin{tikzpicture}[>=stealth,x=1mm,y=1mm]
\filldraw[very thin,draw=blue!30,fill=blue!10] (0,0) rectangle (70,40);
% horizontal
\draw[thin] (15,30) -- (65,30);
\draw[thin] (15,25) -- (65,25);
\draw[thin] (15,20) -- (65,20);
\draw[thin,dashed] (15,15) -- (65,15);
\draw[thin] (15,10) -- (65,10);
\draw[thin] (15,5) -- (65,5);
% vertical
\draw[thin] (15,5) -- (15,30);
\draw[thin] (20,5) -- (20,30);
\draw[thin] (25,5) -- (25,30);
\draw[thin,dashed] (30,5) -- (30,30);
\draw[thin] (60,5) -- (60,30);
\draw[thin] (65,5) -- (65,30);
% descriptions
\node (a) at (22.5,27.5) {$a$};
\node (Ra) at (11,27.5) {\small{$R_a$}\Large{\{}};
\node (La) at (23,34.5) {\small{$L_a$}};
\node (p2) at (24,30.5) {\begin{rotate}{90}\Large{\}}\end{rotate}};
\end{tikzpicture}



\end{document}