[R] DEV2bitmap: jpeg with res=400 not enough for CORELDRAW poster A0

[Jan Verbesselt]

Thanks for the input!

Finally I used:

dev2bitmap(name,type="pdfwrite",height=8,width=14,res=1200)

==> resolution and colors were fine on the A0 poster! 
(and files are really small).

Regards,
Jan

____________________________________________________________________
ir. Jan Verbesselt 
Research Associate 
Lab of Geomatics Engineering K.U. Leuven
Vital Decosterstraat 102. B-3000 Leuven Belgium 
Tel: +32-16-329750   Fax: +32-16-329760
http://gloveg.kuleuven.ac.be/

_______________________________________________________________________

-----Original Message-----
From: Peter Dalgaard [mailto:p.dalgaard at biostat.ku.dk] 
Sent: Friday, May 13, 2005 12:38 PM
To: Uwe Ligges
Cc: Jan.Verbesselt at biw.kuleuven.be; r-help at stat.math.ethz.ch
Subject: Re: [R] DEV2bitmap: jpeg with res=400 not enough for CORELDRAW
poster A0

Uwe Ligges <ligges at statistik.uni-dortmund.de> writes:

> Jan Verbesselt wrote:
> 
> > Dear all,
> > When saving a plot with the dev2bitmap command:
> >     name    <- c("test.jpeg")
> >     dev2bitmap(name,type="jpeg",height=8,width=13,res=400)
> > Everything seems to be ok... After importing this picture in
> > CORELDRAW (for
> > a poster A0) format the resolution and colors are not optimal.
> > How can I save pictures (colors/resolution) optimally for import into
> > CorelDraw for an A0 poster?
> > Pdf?/tiff?/bmp?/
> 
> What about PostScript? It's perfectly resizable and CorelDraw (at
> least the outdated version 10) can deal with it.

But not PDF? Notice that this is not really bitmapped either, even
though handled by dev2bitmap. 

Upping the res= is another option, but may be memory intensive. Notice
that A0 is 4 times as big as A4 (~8x12 inches) so you'd need up to 4
times the resolution - but I guess that your plot is not taking up the
whole area...


-- 
   O__  ---- Peter Dalgaard             Blegdamsvej 3  
  c/ /'_ --- Dept. of Biostatistics     2200 Cph. N   
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