[NTG-context] Filter module for R

[Aditya Mahajan]

On Mon, 15 Jun 2020, Fabrice L wrote:

> Dear Aditya,
>
>> Le 15 juin 2020 à 01:45, Aditya Mahajan <adityam at umich.edu> a écrit :
>> 
>> This is an adapted version of the code that I use for my course where I use the vim module to do the typesetting:
>> 
>> \usemodule[filter]
>> \usemodule[vim]
>> 
>> \definecolor  [darkblue]   [r=0.1,  g=0.11, b=0.84]
>> \definecolor  [darkgreen]  [g=0.7]
>> \definecolor  [lightblue]   [h=87cefa]
>> \definecolor  [lightgreen]  [g=0.95,b=0.8,r=0.8]
>> 
>> \defineframedtext
>>  [leftbartext]
>>  [
>>    width=local,
>>    frame=off,
>>    framecolor=darkblue,
>>    leftframe=on,
>>    rulethickness=1ex,
>>    offset=0.25ex,
>>    loffset=3ex,
>>    background=color,
>>    backgroundcolor=lightblue,
>>  ]
>> 
>> \definevimtyping
>>  [RCODE]
>>  [
>>    syntax=r,
>>    directory=output,
>>    strip=yes,
>>    escape=yes,
>>    before={\blank[quarterline]\startleftbartext},
>>    after={\stopleftbartext},
>>  ]
>> 
>> \define[1]\ShowOutput
>>    {\typeRCODEfile{\externalfilterinputfile}
>>     \startleftbartext[framecolor=darkgreen, backgroundcolor=lightgreen]
>>       \setupalign[flushleft, verytolerant]
>>       % range={1,-1} not currently supported
>>       % See below for details
>>       \typefile[range={1,-1}]{#1}
>>     \stopleftbartext}
>> 
>> 
>> \defineexternalfilter
>>  [R]
>>  [ filtercommand={R CMD BATCH -q --no-timing --save --restore
>> \externalfilterinputfile\space \externalfilteroutputfile},
>>     output=\externalfilterbasefile.out,
>>     directory=output,
>>     readcommand=\ShowOutput,
>>     read=no,
>>     cache=yes,
>>     purge=yes, % THE COMMA WAS MISSING
>>   ]
>> 
>> \starttext
>> 
>> Some text...
>> 
>> \startR[read=yes]
>>   pdf("RPlots/MyHistogram.pdf",5,5)
>>   X <- rnorm(200,mean=10,sd=2)
>>   hist(X, col =  "red3" ,  xlab="Score QI" , main="", ylab="fréquence")
>> \stopR
>> 
>> \externalfigure[RPlots/MyHistogram.pdf][width=.5\textwidth]
>> 
>> \stoptext
>> 
>> 
>
>
> Thanks so much for your answer. I had (of course) to install nvim in order the code to work, but this works !

Sorry, that was a leftover. I was testing in a docker container where I did not have vim installed. This will also work with regular vim.

> Thanks also for your additional work regarding the locale setting.. this is really deep magic for me.

> I think the facility to run R code directly from context can open ConTeXt to new users. The alliance between R and LaTeX is a winning combination to a lot of my colleagues. Do you think this would be appropriate to do a simple page on the wiki explaining how R code can be done in ConTeXt, with eventual formatting, with some simple examples, or this is too much noise ?

Definitely. I think there is already a short page. But it will be good to add more detailed instructions.

Aditya