[GRASS-dev] r.los diff between grass 6.2 and 6.3

[Hamish]

Jachym Cepicky wrote:

> is it possible, that r.los returns different outputs in GRASS 6.2(.3)
> and 6.3 ? Which one is the "right" one? 
> 
> Sample data: 
>
http://www.bnhelp.cz//cgi-bin/mapserv?map=/var/www/projects/sazp/mapserv/sazp.map&service=WCS&request=getCoverage&crs=epsg:102067&coverage=dem&resx=80&resy=80&width=500&height=500&format=image/tiff16&bbox=-360301.0595739889,-1208912.828415709,-320301.0595739889,-1168912.828415709
> 
> r.los in=dem out=vis2 coordi=-340301.0595739889,-1188912.828415709
> obs=1.5
> 
> produced outputs: 
> GRASS 6.2 http://les-ejk.cz/tmp/vis1.png
> GRASS 6.3 http://les-ejk.cz/tmp/vis1.png

                                ( vis2.png )

Hi,

the default value for the max_dist option was changed from 1000 to
10000. r.los is still very very slow, but today's computers are faster
so we can increase that value now.

So your 6.2 version only looks as far as 1km while 6.3 looks 10km.


Hamish



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