在表格中对齐多个饼图

Question

我想在一个表中对齐多个不同大小的饼图。具体来说，我希望这些饼图水平和垂直对齐，使得饼图的中心分别位于一条水平线和垂直线上。到目前为止，我还没有成功。有什么想法吗？

%
% Examples for pgf-pie, by Yuan Xu
%
% Based on the manual from:
% http://code.google.com/p/pgf-pie/
%
\documentclass{article}
\usepackage{fullpage}
\usepackage{pgf-pie}

\begin{document}
\maketitle

\begin{table}[h!]
\centering
\begin{tabular}{m{2cm} c c}
\hline
& A & B \\ \hline

A                    & 
\begin{center}
\begin{tabular}{m}
\begin{tikzpicture}
\pie[radius = 0.3*3,
color = {green, gray, red}, sum=auto]{1/, 5/, 1/} 
\end{tikzpicture}
\end{tabular}
\end{center}&

\begin{center}
\begin{tabular}{m}
\begin{tikzpicture}
\pie[radius = 0.3*1.25992104989,
color = {gray}, sum=auto]{2/} 
\end{tikzpicture}
\end{tabular}
\end{center}\\ 


B                    &
\begin{center}
\begin{tabular}{m}
\begin{tikzpicture}
\pie[radius = 0.3*1.44224957031,
color = {gray}, sum=auto]{3/} 
\end{tikzpicture}
\end{tabular}
\end{center}&

\begin{center}
\begin{tabular}{m}
\begin{tikzpicture}
\pie[radius = 0.3*1.58740105197,
color = {gray, red}, sum=auto]{2/ , 2/} 
\end{tikzpicture}
\end{tabular}
\end{center}

\end{tabular}
\end{table}
\end{document}

目前看起来是这样的：

它看起来应该像这样：

Answer 1

通过剪辑到特定区域，它可以工作：

\documentclass{article}
\usepackage{fullpage}
\usepackage{pgf-pie}
\usepackage{array}
\usepackage{ragged2e}
\newcolumntype{M}[1]{>{\Centering}m{#1}}
\begin{document}

\begin{tabular}{c | M{2.5cm} | M{1.75cm} |}\hline
    & A & B \\ \hline
A   &   \frame{\begin{tikzpicture}\clip (0,0) circle (1cm);
            \pie[radius=0.3*3,
            color={green,gray,red},sum=auto]{1/,5/,1/} 
            \end{tikzpicture}}%
    &  \frame{\begin{tikzpicture}\clip (0,0) circle (0.5cm);
            \pie[radius=0.3*1.2599,color={gray},sum=auto]{2/}%
            \end{tikzpicture}}\\
B   &   \frame{\begin{tikzpicture}\clip (0,0) circle (1cm);
            \pie[radius = 0.3*1.442,
            color = {gray}, sum=auto]{3/} 
            \end{tikzpicture}}
    &   \frame{\begin{tikzpicture}\clip (0,0) circle (0.5cm);
            \pie[radius = 0.3*1.587,
            color = {gray, red}, sum=auto]{2/ , 2/} 
            \end{tikzpicture}}
    \end{tabular}

\end{document}