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LaTeX crashes when I run it on the output of this knitr document because the LaTeX special characters aren't properly escaped. Any hints how to fix this?
\documentclass{beamer}
\begin{document}
\begin{frame}{Unescaped dollar signs and tildes}
In this example, neither the tilde nor the dollar sign
will appear in the pdf document, and the dollar sign
will cause a \LaTeX error.
<<xtable, results="asis">>=
n <- 100
x <- rnorm(n)
y <- 2*x + rnorm(n)
out <- lm(y ~ x)
library(xtable)
xtable(summary(out)$coef, digits=c(0, 2, 2, 1, 2))
@
\end{frame}
\end{document}
765
5.2 Special characters If you want any special characters in R Markdown, LaTeX, or pandoc to appear as text, rather than having them perform some function, you need to “escape” them with a backslash. For example, pound signs/hashtags, backslashes, and dollar signs need to be preceded by a backslash.
The way to escape a special character is to add a backslash before it, e.g., I do not want \_italic text\_ here . Similarly, if # does not indicate a section heading, you may write \# This is not a heading . As mentioned in Section 4.12, a sequence of whitespaces will be rendered as a single regular space.
You need to add [fragile] option if your frame contains a knitr chunk with special latex characters:
\begin{frame}[fragile]
Source: knitr webpage.
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