[GRASS-user] r.sun and r.horizon

[Jonathan Greenberg]

I saw some posts by Markus about getting r.horizon and r.sun "synced" 
(such that the output files of r.horizon correspond to the time steps of 
r.sun)-- I was wondering if there are any conclusions on how best to use 
r.horizon and r.sun together so they most closely mimic using the -s 
shadow flag, specifically with daily integrations.  We're about to start 
doing some MASSIVE r.sun processing (input DEM ~ 80gb) so we'd like to 
know how to pre-calculate the horizon info to speed this up.  Thanks!

--j

-- 
Jonathan A. Greenberg, PhD
Postdoctoral Scholar
Center for Spatial Technologies and Remote Sensing (CSTARS)
University of California, Davis
One Shields Avenue
The Barn, Room 250N
Davis, CA 95616
Cell: 415-794-5043
AIM: jgrn307, MSN: jgrn307 at hotmail.com, Gchat: jgrn307