[R] Postscript resolution

Peter Dalgaard BSA p.dalgaard at biostat.ku.dk
Mon Dec 10 01:31:19 CET 2001

"Michael J. Manning" <mj.manning at niwa.cri.nz> writes:

> Hi all
> I have some plots that I wish to write out to postcript files.  I open 
> the postscript device as suggested [postscript(file="foo.eps",...)], run 
> my plotting commands, and close the device as suggested [dev.off()].  
> However, when I open the eps files in a postscript viewer such as the 
> gimp, the resolution of the postscript images is *really* bad, very 
> "blocky" and "chunky", without the crisp lines and text that I 
> expected.  I seem to remember that specifying the resolution of the 
> image to be written to the eps file somewhere gets around this.  
> Suggestions?
> Am running R 1.3.0 on a Mandrake 8.0 system.

Try another viewer, e.g. gv. I don't think R is involved in this.
Postscript and EPS should be smoothly scalable, but the viewer might
create blockiness. My version of the gimp sets 100dpi when loading
postscript files, e.g.

   O__  ---- Peter Dalgaard             Blegdamsvej 3  
  c/ /'_ --- Dept. of Biostatistics     2200 Cph. N   
 (*) \(*) -- University of Copenhagen   Denmark      Ph: (+45) 35327918
~~~~~~~~~~ - (p.dalgaard at biostat.ku.dk)             FAX: (+45) 35327907
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