[R] 300 dpi and eps:

[Rainer M Krug]

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

On 12/15/2010 09:31 AM, Philipp Pagel wrote:
> 
>> Everything works fine to place them in a pdf file , or eps file, but
>> when it comes to have a high quality of 300 dpi these graphs are not
>> good. For example I open the eps file with Adobe Illustrator (AI)
>> and it shows that it is a 72dpi graph.
> 
> This is simply not true: it's an eps and thus of essentually infinite
> resolution for all practial purposes. 

Just to clarify this: eps / ps are vector formats - i.e. it says in the
file "draw a line from point x to point y". In contrast, bmp (and e.g.
jpg, png, tiff) are raster formats: in these formats save the PICTURE of
the line from point x to y.
Consequently, only raster formats have dpi ("dots" per inch).

> So your problem is not with 
> the R-generated eps but somewhere downstream from that. Any
> postprocessing, conversion or editing?

Or in Adobe illustrator? It strikes me, that 72dpi is usually the screen
resolution.

Cheers,

Rainer

> 
> cu
> 	Philipp
> 


- -- 
Rainer M. Krug, PhD (Conservation Ecology, SUN), MSc (Conservation
Biology, UCT), Dipl. Phys. (Germany)

Centre of Excellence for Invasion Biology
Natural Sciences Building
Office Suite 2039
Stellenbosch University
Main Campus, Merriman Avenue
Stellenbosch
South Africa

Tel:        +33 - (0)9 53 10 27 44
Cell:       +27 - (0)8 39 47 90 42
Fax (SA):   +27 - (0)8 65 16 27 82
Fax (D) :   +49 - (0)3 21 21 25 22 44
Fax (FR):   +33 - (0)9 58 10 27 44
email:      Rainer at krugs.de

Skype:      RMkrug
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.10 (GNU/Linux)
Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/

iEYEARECAAYFAk0Ij8gACgkQoYgNqgF2egolFwCfbcSKiB4xyc7B/mOzdRRu2/dr
iOEAn1KoMR1C4RgYuRRIixUVtLbXN1zE
=W0bk
-----END PGP SIGNATURE-----