[STATSGRASS] Masking

Bob Cooper bcoop at neaq.org
Tue Feb 8 18:40:45 EST 2005


Hi all,

Is there a way in R to "mask" off areas of a region from being included
in a statistical analysis? I am presently looking at location data from
an obligate aquatic, coastal animal. I use GRASS 5.4 and R 2.0.0.
Contours/densities from kde2d.G include, or cross over, areas of land
that the animals cannot occupy.  Any help or direction would be
appreciated.

Bob Cooper
Sr. Biologist
New England Aquarium
Central Wharf
Boston, MA 02110
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