Weight a wind rose's conductances — weight

This function adjusts the conductance values in a wind rose, multiplying them by the values of a secondary raster data set w, which can be used to integrate non-wind factors into a wind connectivity analysis.

Usage

weight_conductance(rose, w)

Arguments

rose: A wind_rose.
w: A single-layer SpatRaster with values to be multiplied by rose, on the same grid as rose.

Value

A wind_rose, with conductance values weighted by w.

Details

As a hypothetical example, to incorporate a decreased but nonzero likelihood of dispersal over inhospitable areas, w could be a raster layer with 0.1 indicating water or mountains and 1.0 elsewhere. This would have the effect of down-weighting conductance over water or mountains by 90%.

Examples

rose <- windscape_example("wind_rose")

# halve conductance west of 105 degrees W
w <- terra::ifel(terra::init(rose[[1]], "x") < -105, 0.5, 1)
weighted <- weight_conductance(rose, w)