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knitr
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\begin_body

\begin_layout Title
Using knitr with \SpecialChar LyX

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\begin_layout Author
Yihui Xie
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Department of Statistics,
 Iowa State University.
 Email:
 
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LatexCommand href
name "xie@yihui.name"
target "xie@yihui.name"
type "mailto:"
literal "false"

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\end_inset


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\begin_layout Standard
The R (
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status collapsed

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https://www.r-project.org
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\end_inset

) package 
\series bold
knitr
\series default
 is an alternative tool to Sweave based on a different design with more features.
 \SpecialChar LyX
 has native support to Sweave since version 2.0.0,
 and the support to 
\series bold
knitr
\series default
 was also added since 2.0.3.
 The usage is basically the same as the 
\family sans
Sweave
\family default
 module
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status open

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read the \SpecialChar LyX
/Sweave manual from 
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Help\SpecialChar menuseparator
Specific Manuals
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:
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\begin_layout Enumerate
Open a new \SpecialChar LyX
 document;
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\begin_layout Enumerate
Go to 
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Document\SpecialChar menuseparator
Settings\SpecialChar menuseparator
Modules
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 and insert the module named 
\family sans
Rnw (knitr)
\family default
;
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\begin_layout Enumerate
Then insert R code in the document with either 
\family sans
Insert\SpecialChar menuseparator
\SpecialChar TeX
 Code
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 or the 
\family sans
Chunk
\family default
 environment;
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\begin_layout Standard
The package website 
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https://yihui.name/knitr
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 has full documentation and demos of 
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knitr
\series default
;
 many of the examples have links to the \SpecialChar LyX
 source documents.
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\begin_layout Standard
Since \SpecialChar LyX
 2.3,
 it is necessary to enable the use of 
\emph on
needauth
\emph default
 converters in
\family sans
 Preferences\SpecialChar menuseparator
File Handling\SpecialChar menuseparator
Converters
\family default
 in order to compile with 
\series bold
knitr
\series default
.
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\begin_layout Standard
Note the 
\series bold
knitr
\series default
 package requires R >= 2.14.1,
 so you need to update R if you are using an old version of R.
 Here we show one chunk as a simple example:
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show-off
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\begin_layout Plain Layout
rnorm(5)
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df=data.frame(y=rnorm(100),
 x=1:100)
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\begin_layout Plain Layout
summary(lm(y~x,
 data=df))
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\begin_layout Standard
Please contact the package author in case of any problems.
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\end_body
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