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The following code chunk doesn't work I get an error message and it disrupts the compilation of my document. Not sure if anyone has any ideas? Very M WE below. As @Speravir pointed out, not sure it adds much to enlighten. This is really about getting efficient code together..

The error message is Error object options_chunk not found

\documentclass[10pt]{article}
\begin{document}
Testing knitr


<<set-options>>=
options_chunk$set(cache=TRUE,cache.path='Data/Cache/',warning=FALSE,error=FALSE,message=FALSE)
@
 Something in the middle to prove its working   
<<somechunk,results='asis'>>=
 a=1
 b=2
 print(a+b)
@
\end{document}
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1 Answer 1

up vote 5 down vote accepted

It is opts_chunk instead of options_chunk. See http://yihui.name/knitr/options

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