Evaluate a model for intervals of distances to the nearest point in a reference dataset for presence data and a sample of the absence data selected to have a low spatial sorting bias (obtained with pwdSample).
Usage
dcEvaluate(p, a, reference, lonlat=TRUE, binsize=15, predp, preda, model,
predictors, fun=predict)
Arguments
p
two column matrix (x, y) or (longitude/latitude) or SpatialPoints object, for point locations
a
two column matrix (x, y) or (longitude/latitude) or SpatialPoints object, for point locations
reference
as above for reference point locations to which distances are computed
lonlat
Logical. Use TRUE if the coordinates are spherical (in degrees), and use FALSE if they are planar
binsize
postive integer. How many presence points in each distance bin?