I don't know if this is relevant in this conversation, but one reason
for the inaccuracies in DEMS are the problems and expense in
collecting elevation data. This is especially difficult in urban areas
or heavily forested areas where the "actual ground surface" is
obscured.
No matter how good your
Hi Rob, thanks for your reply.
> I've yet to see many robust implementations of visibility analysis -I
> used to use this as the case study for how to lie with GIS when I
> lectured on the subject.
>
> variability within the limits of precision of DEMS (or whatever else you
> use to map the terra
I've yet to see many robust implementations of visibility analysis -I
used to use this as the case study for how to lie with GIS when I
lectured on the subject.
variability within the limits of precision of DEMS (or whatever else you
use to map the terrain) cause huge error margins in the comp
Hi developers,
is there some class that does line of sight (visibility analysis) taking
into consideration the earth curvature?
I think I saw something, but I can't find it any more.
Thanks,
Andrea
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