裁剪使用 latex -> dvips 和 tikzexternalize 生成的图像

Question

使用 latex -> dvips 构建图像时，图像不会被裁剪。我怎样才能裁剪 dvips 生成的图像？

\documentclass{article}

\usepackage{pgfplots}
\pgfplotsset{compat=newest}

\usetikzlibrary{external}
\tikzexternalize[mode=list and make]

\tikzset{external/system call={latex \tikzexternalcheckshellescape -halt-on-error -interaction=batchmode -jobname "\image" "\texsource" && dvips "\image".dvi -o "\image".eps}}

\begin{document}
    Hello
    \begin{figure}[htbp]
        \tikzsetnextfilename{test_fig}
        \centering
        \begin{tikzpicture}
            \fill(0,0) rectangle (4,4);
        \end{tikzpicture}
        \caption{My fig.}
    \end{figure}
\end{document}

eps图形如下所示：

Answer 1

添加ps2epsi到external/system call。它修复了边界框：

\tikzset{external/system call={latex \tikzexternalcheckshellescape -halt-on-error -interaction=batchmode -jobname "\image" "\texsource" && dvips "\image".dvi -o "\image".ps && ps2epsi "\image".ps "\image".eps}}