现在我正在使用子文件来编译独立文档，我想在子文档中插入一张图片，如下所示：
\documentclass[../../../dolphin-book-2020.tex]{subfiles}
\begin{document}
\subsection{GitHub Slow}
balabalabala.......
\begin{figure}[htbp]
\centering
\includegraphics[scale=0.2]{githubspeedup}
\caption{GitHub Speed Up}
\label{fig:githubspeedup}
\end{figure}
\end{document}
当我在 macOS Catalina 10.15 中使用此命令进行编译时：
/Library/TeX/texbin/latexmk -pdfxe -pvc -xelatex -interaction=nonstopmode ./github-slow.tex
显示此错误：
(/usr/local/texlive/2020/texmf-dist/tex/latex/listings/lstlang1.sty)
(/usr/local/texlive/2020/texmf-dist/tex/latex/listings/lstlang1.sty)
Package fontspec Warning: Font "FandolFang-Regular" does not contain requested
(fontspec) Script "CJK".
! LaTeX Error: File `githubspeedup' not found.
See the LaTeX manual or LaTeX Companion for explanation.
Type H <return> for immediate help.
...
l.31 ^^I\includegraphics[scale=0.2]{githubspeedup}
[1] (./github-slow.aux)
LaTeX Font Warning: Some font shapes were not available, defaults substituted.
LaTeX Warning: Label(s) may have changed. Rerun to get cross-references right.
)
(see the transcript file for additional information)
Output written on github-slow.xdv (1 page, 28900 bytes).
Transcript written on github-slow.log.
=== TeX engine is 'XeTeX'
Latexmk: Index file 'github-slow.idx' was written
Latexmk: Missing input file: 'githubspeedup' from line
'! LaTeX Error: File `githubspeedup' not found.'
Latexmk: References changed.
Latexmk: Log file says output to 'github-slow.xdv'
Latexmk: Errors, so I did not complete making targets
Latexmk: Failure to make the files correctly
==> You will need to change a source file before I do another run <==
Collected error summary (may duplicate other messages):
xelatex: Command for 'xelatex' gave return code 1
Refer to 'github-slow.log' for details
=== Watching for updated files. Use ctrl/C to stop ...
^CLatexmk: User typed ctrl/C or ctrl/break. I'll finish.
Collected error summary (may duplicate other messages):
xelatex: Command for 'xelatex' gave return code 1
Refer to 'github-slow.log' for details
Latexmk: Use the -f option to force complete processing,
unless error was exceeding maximum runs, or warnings treated as errors.
我该怎么做才能让它工作？我已经在主文件中添加了图片路径，dolphin-book-2020.tex如下所示(所有图片存储在文件夹中，没有图片存储在子文件夹中)：
\graphicspath{{./Pictures/}}
这是文件结构：
我曾尝试dolphin-book-2020.tex像这样定义图片路径：
\graphicspath{{../../../Pictures/}{../../Pictures/}{../Pictures/}{./Pictures/}}
这是文件夹嵌套结构：
我也尝试写出图片的所有可能路径：
\graphicspath{
{Pictures/}
{../../../Pictures/}
{../../Pictures/}
{image/}
{/Users/dolphin/Documents/GitHub/dolphin-book-2020/Pictures}
}
仍然找不到文件。
答案1
您需要在以下位置添加图像的搜索路径主要文件。
假如说：
（1）dolphin-book-2020.tex在目录中BOOK
（2）各章内容如下BOOK/chapters
（3）图像位于 BOOK/chapters/images 且子目录images包含githubspeedup.jpg
（4）子部分位于BOOK/chapters/subsections且该子目录包含GitHubSlow.tex
你会得到
编译 dolphin-book-2020.tex 或GitHubSlow.tex
从主文件和子文件到图像的搜索路径被添加为
\graphicspath{{./chapters/images/}}} % path to image githubspeedup.jpg
在主文件中 dolphin-book-2020.tex<<<<<<<<
可以添加多个搜索路径，如下所示
\graphicspath{{<path1>}{<path2>}{<path3>}}}
这是dolphin-book-2020.tex
%% dolphin-book-2020.tex in its own directory BOOK
\documentclass[12pt,a4paper]{book}
\usepackage{graphicx}
\usepackage{subfiles}
\graphicspath{{./chapters/images/}} % path from here to image githubspeedup.jpg <<<<<<<<<<<<<<< added
\begin{document}
\subfile{./chapters/subsections/GitHubSlow} % subsection file in BOOK/chapters/subsections subdirectory
\end{document}
这是GitHubSlow.tex在 subsections 子目录中
% GitHubSlow.tex in BOOK/chapters/subsections
\documentclass[../../dolphin-book-2020.tex]{subfiles}
\begin{document}
\subsection{GitHub Slow}
balabalabala.......
\begin{figure}[htbp]
\centering
\includegraphics[scale=0.2]{githubspeedup}
\caption{GitHub Speed Up}
\label{fig:githubspeedup}
\end{figure}
\end{document}
答案2
在子文件上添加图片路径如下：
\documentclass[../../../dolphin-book-2020.tex]{subfiles}
\usepackage{graphics} % add package
\graphicspath{
{../../../Pictures/}
} % add picture path
\begin{document}
\begin{figure}[htbp]
\centering
\includegraphics[scale=0.2]{codesign}
\caption{fastlane}
\label{fig:codesign}
\end{figure}
\end{document}