[英]KnitR , Latex conditional display of Text and Code block
How do i turn on/off display of perticular subsection based on some condition ? 如何根据某些条件打开/关闭特定部分的显示? for example, i want to display following sub-section only when
xyplotFacSpecTotVarTest.pdf
exist. 例如,我想仅在
xyplotFacSpecTotVarTest.pdf
存在时显示以下子部分。
How can i do it ? 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}
Put your sub-section in a different file, say, sub.Rnw
. 将您的子部分放在另一个文件中,例如
sub.Rnw
。 Then include it in your main document conditionally, eg 然后有条件地将它包含在主文档中,例如
<<child = if (file.exists('foo.pdf')) 'sub.Rnw'>>=
@
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