The workflow

Slope (Fs)

Derive a slope raster from a DEM, then turn it into the slope cost factor.

The Slope tab produces the Fs cost factor in two steps: first a slope raster from a DEM, then a cost reclassification.

Step 1 — Create Slope from DEM

• Select DEM Layer, then click Create Slope Raster from DEM.
• Slope is computed in percent. The DEM must be in a projected CRS with consistent horizontal/vertical units, or the slope is meaningless.

Step 2 — Create Slope Costs

• Select Slope Layer (the raster from step 1).
• Edit the cost-interval table — columns Min % Slope, Max % Slope, Cost, and No Upper Limit for the open-ended top band. Use Add Row / Remove Selected Row, or click Populate according to COMET.
• Click Create Slope Costs Raster → the Fs raster.

The COMET slope values are in Cost-factor tables.

Next: Crossings.