I have a sample of ~700 animal locations that I will be using for habitat selection analysis. I am trying to figure out a way to subsample my locations in a way that will maximize my sample size for analysis, but minimize spatial autocorrelation. I envision taking a subsample of the points such that no point is within X distance (the distance at which autocorrelation is no longer a problem) of another. I don't necessarily need to select the "maximum" number of points, it is more of a conceptual problem of balancing sample size with autocorrelation. Is there a way to do this in ArcGIS 10? The images below show the type of data and spatial clustering I am working with. The autocorrelation distance is roughly equal to that of the gray buffer (570 m), so subsampling based on that will severely limit my sample size. Is there a better approach that I am not thinking of?
Thanks for any input!