overlap3d: Spatial overlap between several utilization distributions

In aspillaga/fishtrack3d: Analysis of Passive Acoustic Telemetry Data in 3D

Description

This function takes a list of RasterLayer, RasterStack or RasterBrick with utilization distribution (UDs) volumes (calculated with volumeUD) and calculates the spatial overlap within a probability contour between each pair of them.

Usage

overlap3d(ud.vol.list, level, symmetric = TRUE)

Arguments

ud.vol.list	list of RasterLayer, RasterStack or RasterBrick objects with the UDs volumes to overlap. If the elements of the list are RasterStack or RasterBrick objects, the number and name of the layers must coincide.
level	UD volume probability contour to be used to calculate volume overlaps.
symmetric	logical. If TRUE, the overlap indexes are calculated referred to the total joint volume of each pair of UD volumes. If FALSE, two overlap indexes are calculated for each pair of UDs, each one referred to the volume of one of the UDs to compare (see the volOverlap function.

Value

The function returns a matrix with the overlap indexes between each pair of UD volumes. The matrix will be symmetric if symmetric == TRUE or assymetric if symmetric == FALSE.

aspillaga/fishtrack3d documentation built on June 4, 2019, 9:14 a.m.