Here is my code in a Rnw file :
\Sexpr{length(which(x %in% c('a', 'b')))}
As % is the syntax for comments, this code doesn't work.
How to use %in% in Sexpr in R/Sweave ?
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Marion H.
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Have you tried escaping it? – Hack-R Jul 27 '16 at 13:50
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Yes, it doesn't work either. – Marion H. Jul 27 '16 at 14:36
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1If it's true that it doesn't work inline, you could add it to a code block, saving the output to a variable. Then just call the variable name inline. – lmo Jul 27 '16 at 14:39
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I would have preferred to avoid but if there is no alternative, I will do so ! – Marion H. Jul 27 '16 at 14:48
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You can use `is.element` instead of `%in%`. – Stéphane Laurent Jul 25 '17 at 14:14
1 Answers
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I cannot mark questions as duplicate but I got the answer from here and by Yihui: \Sexpr{} special LaTeX characters ($, &, %, # etc.) in .Rnw-file
The following code will allow special latex characters to be used inline in \Sexpr so you can use %in%. It's a more general question than the one you posted.
hook_inline = knit_hooks$get('inline')
knit_hooks$set(inline = function(x) {
if (is.character(x)) x = knitr:::escape_latex(x)
hook_inline(x)
})
Sahir Moosvi
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