The workflow

Land Use (Flu)

Turn a classified land-cover raster into the land-use cost factor.

The Land Use tab produces the Flu cost raster — how acceptable each cell’s land cover is to cross. It’s the first factor of the COMET cost model.

Input

A classified land-cover raster, where each cell value is a land-cover class (e.g. the Portuguese COSc map). The plugin reads the class values and labels directly from the layer’s styling.

Steps

1. Select Land Use Layer — pick the classified raster from the dropdown. The class table fills automatically with one row per class: Class ID, Class Name, Cost (default 1, editable).
2. Set the costs. Either type your own cost per class, or click Populate according to COMET to fill the COMET reference values. Show COMET Values opens a reference dialog mapping each COSc thematic class to its COMET land-use category and cost factor. Populate is tuned for Portugal’s COSc classes — with a different land-cover scheme, set the costs by hand. (COMET also defines a protected-areas category at cost 10, but COSc doesn’t flag protected areas, so it isn’t auto-filled — see Cost-factor tables.)
3. Choose an output path (Browse) and click Create Land Use Costs Raster.

What it does

The tab reclassifies the input raster: every cell’s class value is replaced by its cost, producing a GeoTIFF that preserves the original CRS, resolution and extent. The reclassification is vectorised (fast even on large national rasters).

Cells whose class isn’t in the table are given a penalising value rather than a low one — so unclassified terrain never makes a route look artificially cheap.

COMET land-use values

The full COSc → COMET class mapping is in Cost-factor tables.

Next: Slope.