将 Tikz-Pie-Chart 标题与图表对齐

Question

我正在尝试将我创建的饼图的标题与tikz pgf-pie包对齐。目标是让多个饼图在一行中彼此相邻。

到目前为止，我尝试创建一个figure环境，将tikz包含的环境pie-chart放在图中并添加标题。但是标题没有集中在饼图下方，而是奇怪地集中在页面中央。如果我\centering在环境中使用该命令figure，那么整个图形/饼图将集中在页面中央，而不是左对齐。

那么，如何将标题与饼图的中心对齐而不是与页面对齐？

---

看起来应该如何

外观

我的最小工作示例如下所示：

\documentclass[11pt]{scrartcl}

\RequirePackage{tikz}
\RequirePackage{pgf-pie}

\begin{document}

\begin{figure}[h]
    %\centering
    \begin{tikzpicture} % Tikz environment
        \pie[rotate=270, radius=2]
        {46/Germany, 21/Austria and Switzerland, 25/Europe, 8/Asia and America}
    \end{tikzpicture}
    \caption{Revenue by Geographic}
\end{figure}

\end{document}

Answer 1

根据您的需要，这里有两种解决方案：

• 使用小页面
• 使用子图

所以

\documentclass[11pt]{scrartcl}

\RequirePackage{tikz}
\RequirePackage{pgf-pie}
\usepackage{subcaption}
\usepackage{lipsum}

\begin{document}
\lipsum[1]

\noindent\fbox{\begin{minipage}{.45\linewidth}
        \centering
        \begin{tikzpicture}[scale=.7, every node/.style={scale=0.7}] % Tikz environment
        \pie[rotate=270, radius=2]
        {46/Germany, 21/Austria and Switzerland, 25/Europe, 8/Asia and America}
        \end{tikzpicture}
        \captionof{figure}{Revenue by Geographic}
\end{minipage}}
\hfill
\fbox{\begin{minipage}{.45\linewidth}
\centering
\begin{tikzpicture}[scale=.7, every node/.style={scale=0.7}] % Tikz environment
\pie[rotate=270, radius=2]
{46/Germany, 21/Austria and Switzerland, 25/Europe, 8/Asia and America}
\end{tikzpicture}
\captionof{figure}{Revenue by Geographic}
\end{minipage}}

\begin{figure}[h!]
    \fbox{\begin{subfigure}[b]{.45\linewidth}
        \centering\begin{tikzpicture}[scale=.7, every node/.style={scale=0.7}] % Tikz environment
        \pie[rotate=270, radius=2]
        {46/Germany, 21/Austria and Switzerland, 25/Europe, 8/Asia and America}
        \end{tikzpicture}
        \caption{A subfigure}\label{fig:1a}
    \end{subfigure}}%
    \hfill
    \fbox{\begin{subfigure}[b]{.45\linewidth}
        \centering\begin{tikzpicture}[scale=.7, every node/.style={scale=0.7}] % Tikz environment
        \pie[rotate=270, radius=2]
        {46/Germany, 21/Austria and Switzerland, 25/Europe, 8/Asia and America}
        \end{tikzpicture}
        \caption{Another subfigure}\label{fig:1b}
    \end{subfigure}}
    \caption{A figure}\label{fig:1}
\end{figure}

\lipsum[2]
\end{document}

Answer 2

饼图的中心 (0,0) 通常不是边界框的中心。如果要将标题与饼图对齐，则需要使边界框关于原点对称。

我添加了一个覆盖层来准确显示中心。

\documentclass[11pt]{scrartcl}

\RequirePackage{tikz}
\RequirePackage{pgf-pie}

\begin{document}

\begin{figure}[h]
    \centering
    \begin{tikzpicture} % Tikz environment
        \pie[rotate=270, radius=2]
        {46/Germany, 21/Austria and Switzerland, 25/Europe, 8/Asia and America}
        \path (current bounding box.south west);
        \pgfgetlastxy{\xleft}{\ybottom}%
        \path (current bounding box.north east);
        \pgfgetlastxy{\xright}{\ytop}%
        \path (-\xleft,-\ybottom) (-\xright,-\ytop);% symmetrize bounding box
    \end{tikzpicture}
    \caption{Revenue by Geographic}
    \smash{\rule{0.5pt}{2in}}% overlay line through center (remove)
\end{figure}

\end{document}