[R-SIG-Mac] How to put nice R graphics into powerpoint
chabotd at globetrotter.net
Thu Feb 10 16:50:17 CET 2005
I really like the nice vector-based pdf graphics I get in R.
However, PowerPoint seems to be unable to read them as vector graphics
and rasterizes them, making them quite "fuzzy" and ugly. Granted, the
problem lies with Microsoft, but in the mean time what is the best
workaround? I'd like to do better than producing png from within R
(especially that only my iMac has X11, my very old PowerBook does not).
I am still able to show vector graphics in pict format in PowerPoint.
So it should be possible to extract the vectorized plot from the pdf
and save it as pict, still vectorized.
However opening the R-produced pdf in Illustrator and saving as pict
produces a file quite a bit bigger than the original pdf, suggesting it
was saved as raster pict instead of vector pict. It shows up in
Powerpoint just as ugly as if it was inserted directly as pdf. This is
true with Illustrator CS (aka v11 I think) used either under 10.2.8 or
10.3.7. It is also true when using GraphicConverter 5 and Preview
(Jaguar's version, I think it is also true with the Panther version) to
go from pdf to pict.
I fired up Canvas (old, version 8) and it did manage to save something
that was vectorized (i.e. very sharp when viewing at 400% in
PowerPoint) but the empty circles I used as symbols were not filled
blacks, the dashes of dashed lines had become "wiggly", text
orientation was unacceptably changed, etc. etc.
So does anyone know of a technique to produce vector graphics that
insert nicely in PowerPoint, either directly from R or by converting a
pdf produced by R into something else?
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