For my Bachelor's thesis I try to reconstruct a road betweeen two ancient cities.
One method I'd like to try is least cost path analysis with QGIS. I've worked with QGIS before, but mostly only basic stuff. Can someone explain how least cost path analysis works? I know there are already a lot of threads on this, but I don't really understand.
I downloaded a DEM layer (SRTM satellite data) and transformed it into a slope layer and an elevation layer. Then I used the plugin called "Least Cost Path" on both, but got different results (which isn't suprising I think).
I'd like to take both, slope and elevation, into account for my least cost analysis. How can I combine these two layers? Is there anything else I have to do or any other layers I need?