Categorical Wombling script to detect boundaries with qualitative data

Hi all,

I am inquiring whether there is a tool or script that will perform categorical wombling for qualitative data, specifically presence-absence data (see Fortin & Drapeau 1995. "Delineation of ecological boundaries: comparison of approaches and significance tests"). If so, has anyone used such script/tool to delineate species range edge for a mammal based on presence-absence data?

Thank you in advance!

Sarah