Hello Grass Users,
Does GRASS have the capability to interpolate one site from multiple sites? I want to "average" the sites, so to speak, of where wildlife was spotted to give me one site for each species surveyed within a given range.
Up till now, this has been done manually by techs who visually "averaged" the clusters of wildlife to determine the one point. There's got to be an easier way.
Any pointers would be much appreciated. Thanks,
----
Christine Weiss
NYC Dept. Parks & Recreation
Natural Resources Group
cmw@nycparks.gov
(212) 360-2749
Christine Weiss (cmw@nycparks.gov) writes on 21 Feb 94:
Does GRASS have the capability to interpolate one site from multiple sites? I want to "average" the sites, so to speak, of where wildlife was spotted to give me one site for each species surveyed within a given range.
Up till now, this has been done manually by techs who visually "averaged" the clusters of wildlife to determine the one point. There's got to be an easier way.
Any pointers would be much appreciated. Thanks,
I'm not real clear on what you mean, but how about:
s.out.ascii -d file |\
awk 'BEGIN {a=b=c=0} {a+=$1;b+=$2;c+=$3} END{print a/NR,b/NR,c/NR}'
This averages the easting, northing, and third field and prints
one site as output. Manually, I suppose that you could
use g.region/d.zoom to window the data (assuming that the clusters
are highly separable) but I wouldn't want to do this for lots of
clusters.
--Darrell