Calculate bird density maps

Calculate bird density maps using the distance-decay function used in SeabORD, via users specifying "proportion of UD lying within the foraging range"

Usage

calc_birddensmap_dd_pinfr(dmap, fr, pinfr, dmin = 1)

Arguments

dmap

A raster containing the distance by sea from each grid cell to the population of interest

fr

Foraging range, in kilometres

pinfr

The proportion of the UD that is assumed to lie within a distance fr of the population: a numeric value between 0 and 1

Value

A raster containing the distance-decay map

20 Oct 2023: added "dmin" argument