On Wed, 2009-12-02 at 10:59 -0500, Corrie Curtice wrote: > This might be a dumb novice question, but why can't I get the 100% > isopleth with getverticieshr? > > When I try this: > kvtmp <- getverticeshr(ud, lev = 100) > > I get this error: > Error in re[[i]] : subscript out of bounds > > Is that just not something that should be done? 99 and all others work > fine. UD was created with kernelUD(xy, id, grid=100, h="href"), on a > single "animal" (really several animals in one area, but I am > interested in the population as a whole). > > Thanks for any guidance.
Hello Corrie, first of all, no worries: there's no dumb question about homerange estimation ;) about the error: - from a theoretical point of view, the 100% isopleth of the kernel is not finite, because the area where you have 100% of probability to encounter an animal is actually the whole world. - from a programming point of view, the isopleth goes far beyond the grid limits and therefore the "subscript out of bounds" error is raised. Maybe it will be useful that the code raise a warning when attempting the extraction of 100% kernel isopleth, instead of the generic error that raises also with lower isopleths that are partially outside the grid boundaries. hope this helps, Anne > --corrie > > --- > Corrie Curtice > Research Associate > Marine Geospatial Ecology Lab > Nicholas School of the Environment, Duke University > http://mgel.env.duke.edu > em: [email protected] > _______________________________________________ > AniMov mailing list > [email protected] > http://lists.faunalia.it/cgi-bin/mailman/listinfo/animov
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