Sébastien Vauban <wxhgmqzgw...@spammotel.com> writes:
> Hi Eric and Dan,
>
> Just a quick question (before testing and answering properly, tomorrow, to
> your post): how do you give a name to an R plot?
>
> Just taking your example file:
>
> #+srcname: directory-pie-chart(dirs = directories)
> #+begin_src R :session R-pie-example
> pie(dirs[,1], labels = dirs[,2])
> #+end_src
> [[file:../../images/babel/dirs.png]]
>
> I don't see how the `dirs.png' name is derivated from the above block?
Hi Seb,
Sorry, more documentation shortcomings. When that was written it did not
happen automatically, but it does now.
> I've tried arguments such as `:file' or `filename:', but did not get any
> success...
e.g.
:file filename.png
should do it. Here's the relevant commit note. I'll move this into the
documentation now.
commit 8b52bf09e0644cc5b6ea85e5248403fcd562f4f3
Author: Dan Davison <davi...@stats.ox.ac.uk>
Date: Mon Oct 19 21:00:24 2009 -0400
org-babel: capture graphical output from R
If a [:file filename.ext] header arg is provided, then all graphical
output from the source block is captured on disk, and output of the
source block is a link to the resulting file, as with the
graphics-only languages such as gnuplot, ditaa, dot, asymptote. An
attempt is made to find a graphics device corresponding to the file
extension (currently .png, .jpg, .jpeg, .tiff, .bmp, .pdf, .ps,
.postscript are recognised); if that fails, png format output is
created.
Additionally, values for several arguments to the R graphics
device can be passed using header args:
:width :height :bg :units :pointsize
:antialias :quality :compression :res :type
:family :title :fonts :version :paper :encoding
:pagecentre :colormodel :useDingbats :horizontal
Arguments to the R graphics device that are not supported as header
args can be passed as a string in R argument syntax, using the header
arg :R-dev-args
An example block is (although both bg and fg can be passed directly as
header args)
\#+begin_src R :file z.pdf :width 8 :height 8 :R-dev-args bg="olivedrab",
fg="hotpink"
plot(matrix(rnorm(100), ncol=2), type="l")
\#+end_src
>
> Currently, all my R blocks produce an `Rplots.pdf' graph file... Don't see
> where that is coming from... Pay attention: I'm an R user for the last 3 days
That is the default in R when you issue plot commands from a
non-interactive R process. But if you use the :file header arg all
graphical output will be diverted to the named file as outlined above.
dan
> or so... Not very aware of where the name can be set...
>
> Best regards,
> Seb
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