search for: isopleths

Dear List, I can't seem to get a simple paste function to work like I need. I have an object I need to call but it ends in a character string. The object is a list of home range values for a range of percent isopleths. I need to loop through a vector of percent values, so I need to paste the percent as a character on the end of the object variable. I have no idea why the percent is in character form, and I can't use a simple index value (homerange[[1]]$polygons[100]) because there are a variable number of...

I have carried out a spatial interpolation (Kriging) using surf.gls() The contour plot looks very plausible and the image plot is o.k too. The problem is, hovever, that I need the vectorized isoplethes, as in contour(). Unfortunately, I found no solution to get the internal data from contour(). Is there a possibility to extract contour lines as x-y-polygon from a grid without hacking plot3d.c?

I am using package ks() to build 3D representations of bird territories and calculate territory volume from spatial data (simply x, y, and z coordinates). What I want to do is determine at what sample size (# locations collected) does the territory volume stop increasing. This should give me an idea of the number of points needed for future seasons. So I have a couple of birds each with 200