circuitscape_skeleton   Create the initialization file for the julia
                        package Circuitscape
distances               Spatial distances
energy                  Energy Landscape
energyscape             Energy Landscape
enerscape               Compute Energy Landscapes
neighbours              Neighbours
omniscape_skeleton      Create the initialization file for the julia
                        package Omniscape
pontzer                 Energy cost of transport from Pontzer (2016)
sirente                 Monte Sirente Digital Elevation Model
slope                   Slopes
