Hi,

Sorry again for cross-postings...

I have a couple of further questions on calculating spatial overlap in adehabitat. I apologise if these questions are pretty evident - I'm still learning the ropes. I want to calculate home range overlap for both classical kernel density home ranges, and also for biased random bridge home range estimates.



I am trying to use the kerneloverlap() function, but have a couple of issues:



Does anyone know of a way to combine different estUD files into an estUDm for this function?

I've calculated the BRB kernels with different parameters (for different species), so I'd like to calculate individual-specific kernels prior to calculating overlap.





Secondly, when I do get estimates of UDOI overlap, they appear a bit strange, given the home range contours. I am getting some huge estimates (>10 for some animals with 95% contours that don't touch) and quite low estimates (~0.1) for situations where a HR is completely inside another. Does anyone have any suggestions or references that can point me in the right direction on this one?



Thanks,
Leila Brook



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