How to calculate stacked cumulative current maps for several species

[carlosbedson]

Dear helpful Circuitscape people.
Please may I ask a couple of questions.
The cum_cur_map.asc outputs - I assume this is an additive of all the pairwise voltmaps? Does this mean they are stacked on top of each other and then summed?

If then I had a cum_cur_map.asc for say 5 species all on the same extent and geography - how would i then assemble or calculate these to achieve a combined multi-species cumulative voltage map. Is this again summing them up i.e. additively?

Thank you if you can offer advice. If you do so, if the calculations are intricate, please I am assembling this in R so any coding or function advice would be much welcomed. Otherwise I would just be doing for example sum(SpatRaster) which would be the raster stack.

Thank you. Kind regards Carlos