tikzpicture 无法在 subfigure/subcaption/subfloat 中绘制

Question

我尝试将两个 tikzpicture 放在一个图中作为两个子图，但 tikzpicture 在子图中无法正确绘制。我尝试过包 subfig、subfigure、subcaption，但都失败了。

\documentclass[UTF8]{article}

\usepackage{subfig}
\usepackage{tikz}
\usepackage{pgfplots}
\usetikzlibrary{datavisualization}
\usetikzlibrary{datavisualization.formats.functions}


\begin{document}
\begin{tikzpicture}
\datavisualization [school book axes, visualize as line]
data [headline={x, y}] {
    0, 0
    1, 1
    2, 1
    3, 0
};
\end{tikzpicture}

\begin{figure*}[!t]
\centering
\subfloat[Case I]{\begin{tikzpicture}
    \datavisualization [school book axes, visualize as line]
    data [headline={x, y}] {
        0, 0
        1, 1
        2, 1
        3, 0
    };
    \end{tikzpicture}%
\label{fig_first_case}}
\hfil
\subfloat[Case II]{\begin{tikzpicture}
    \datavisualization [school book axes, visualize as line]
    data [headline={x, y}] {
        0, 0
        1, 1
        2, 1
        3, 0
    };
    \end{tikzpicture}%
\label{fig_second_case}}
\caption{Simulation results for the network.}
\label{fig_sim}
\end{figure*}
\end{document}

输出如下：

Answer 1

为了说明我的评论：

当然，它似乎只影响 tikzpicture，而不影响 subfloat（它使用保存框来测量宽度）。重新定义 \sbox 和 \savebox 也无济于事。

\documentclass[UTF8]{article}
\usepackage{subfig}
\usepackage{tikz}
\usepackage{pgfplots}
\usetikzlibrary{datavisualization}
\usetikzlibrary{datavisualization.formats.functions}

\begin{document}
\sbox0{\begin{tikzpicture}
\datavisualization [school book axes, visualize as line]
data [headline={x, y}] {
    0, 0
    1, 1
    2, 1
    3, 0
};
\end{tikzpicture}}\usebox0% does not work right

\setbox0=\hbox{\begin{tikzpicture}
\datavisualization [school book axes, visualize as line]
data [headline={x, y}] {
    0, 0
    1, 1
    2, 1
    3, 0
};
\end{tikzpicture}}\usebox0

\begin{figure}[t]
\centering
\subfloat[Case I]{\usebox0
\label{fig_first_case}}
\hfil
\subfloat[Case II]{\usebox0
\label{fig_second_case}}
\caption{Simulation results for the network.}
\label{fig_sim}
\end{figure}
\end{document}