[GRASSLIST:3177] Re: Proper input for r.sunmask (GRASS5.3)
Javier A. Yebrin
javier.yebrin at ing.unitn.it
Thu Apr 15 06:31:24 EDT 2004
> On Wed, Apr 14, 2004 at 03:53:31PM +0200, Javier A. Yebrin wrote:
> > Hi all!
> > I'm trying to use r.sunmask in order to calculate shadowed
> > areas.
> > [....]
> r.sunmask is just extremely slow.
> A trick: use r.sun instead:
Thanks, i'll try that later. I want to see first how does r.sunmask
performs. It's been running for 20 hours and its on 72%.
(Grass53 on AlphaStation 500 - 400Mhz -256 Mb RAM - 1 gb used swap)
> - use -s flag
> - "A map of shadows can be extracted from the solar incidence
> angle map (incidout). Areas with zero values are shadowed."
> Hope this helps,
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