I am trying to generate least cost paths for water quality modeling. I know how to generate a cost surface and utilize the various tools in Spatial Analyst to produce a cost path raster. The problem is that I need to do this hundreds of times. The write time for each path raster is about 5-10 secs x hundreds of outputs = too long. Is there a way (perhaps through matrix overlays?) to generate quick cost paths in order to determine which cells that each least cost path traverses through?
Thanks!