如何根据某些条件打开/关闭特定小节的显示？
例如，我只想在 xyplotFacSpecTotVarTest.pdf 时显示以下子部分存在。
我该怎么做 ？
\subsection{Checksum: Factor, Specific, and Total Variance}
Perhaps the most basic test of a regression model is if the factor and specific variances sum to equal the total variance. Here, we
present this diagnostic as an xy-plot, with the sum of factor and specific variance on the x-axis and the total variance on the y-axis. We
expect the plotted points to line up tightly along the identity line.
\clearpage
\begin{figure}[!h]
\centering
\includegraphics{\Sexpr{image_dir}xyplotFacSpecTotVarTest.pdf}
\caption{Total Variance vs. Sum of Factor and Specific Variance, All Instruments Passing Exposure Model.}
\end{figure}
最佳答案
将您的子部分放在不同的文件中，例如 sub.Rnw .然后有条件地将其包含在您的主文档中，例如
<<child = if (file.exists('foo.pdf')) 'sub.Rnw'>>=
@
关于r - KnitR，Text 和 Code block 的 Latex 条件显示，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/23437854/