Step 1: Use the inverse of the habitat suitability map as a resistance map
We have been operating under the assumption that habitat suitability and habitat permeability are synonyms. In Overview of habitat modeling, we admitted that we don't know this for sure. The big leap of faith is assuming that habitat suitability is the same as habitat permeability. At this point, we simply define resistance or travel cost as the inverse of suitability or permeability, such that