Dear List,
I am trying to use Adehabitat to analyze the home range and movement patterns
of fish (manta rays, sharks, and various species of reef fish) in Hawaii, but
have not found a way to clip land area out of the animals home range. Most of
the fish I study stay fairly close to shore, moving along a sinuous coastline.
I have used adehabitat to estimate their home range (I am mostly interested in
kernel HR's), but need to either limit the calculations to only include water
areas during the calculation or clip out the land area after the kernel has
been calculated. Is there a way to use a shapefile or other projected map file
to either limit the kernel or to clip out the area post-processing? I am
fairly new to R and adehabitat, and am working in Windows.
Thanks for your help,
Tim
Tim Clark
Department of Zoology
University of Hawaii
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