Re: [NTG-context] Filter module for R

15 Jun 2020


      On Mon, 15 Jun 2020, Fabrice L wrote:
...
Dear Aditya,
...
Le 15 juin 2020 à 01:45, Aditya Mahajan  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