View source: R/raster.breadth.R
raster.breadth | R Documentation |
This function measures the spatial heterogeneity of the distribution of suitability scores from an ENM. It returns Levins' (1968) two metrics of niche breadth.
raster.breadth(x, verbose = FALSE)
x |
An object of class raster or RasterLayer, or an ENMTools model object containing a suitability raster. |
verbose |
Controls printing of diagnostic messages |
Levins, R. 1968. Evolution in changing environments: some theoretical explorations. Princeton University Press.
results A vector containing the two metrics B1 and B2 for niche breadth.
aurelioi.glm <- enmtools.glm(iberolacerta.clade$species$aurelioi, euro.worldclim,
f = pres ~ bio1 + bio12)
raster.breadth(aurelioi.glm)
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