On Mon, 15 Jun 2020, Aditya Mahajan wrote:
On Sun, 14 Jun 2020, Fabrice L wrote:
Hi,
Following a question about the broken R module (R the statistical
software), Aditya suggested me the filter module (thanks to him). I’m about
to distribute a set of course notes to colleagues, and I need to deal with
details now. I have one problem and two questions.
1) the filter collect R code between \startR / \stopR and submit this code
to R. As it can be seen in the following minimal example, when a label
contains an accented character (« Fréquence » in my example), the pdf
graphic does not contains the « é ». Strangely, the snippet of code (which
is saved locally as « test2-temp-R-0.tmp » (for test2.tex)) when submitted
with the same command as the filtercommand, works correctly; that means the
same file works when submitted to R outside of ConTeXt. I have no idea how
to solve this.
Are you running the exact same command as the `filtercommand`. If so, I don't
know why running the `filtercommand` through context vs directly typing it on
the terminal should behave differently. The filter module effectively just
runs os.execute("filtercommand"). I don't use R so I am unable to debug
further.
I can reproduce this output side the filter module. If I directly run os.execute(...)
from a lua session, the output is correct but running it through context gives the wrong
output. I am guessing this is something to do with locale. I notice that the output of
os.execute("locale") from context is different from that from my shell. But I
don't know why locale should affect UTF characters in R. Perhaps someone with more
knowledge of R can comment on that.
\starttext
\startluacode
lfs.mkdir("output/")
\stopluacode
\startbuffer[code]
pdf("output/MyHistogram.pdf",5,5)
X <- rnorm(200,mean=10,sd=2)
hist(X, col = "red3" , xlab="Score QI" , main="", ylab="fréquence")
\stopbuffer
\savebuffer[prefix=no, list=code, file={output/code.r}]
\startluacode
print(">>>>", "RUNNING R CMD")
os.execute("R CMD BATCH --no-timing --save --restore output/code.r
output/out")
\stopluacode
\externalfigure[RPlots/MyHistogram.pdf][width=.5\textwidth]
\stoptext
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