mkde (version 0.2)

setMaximumZfromRaster: Initialize maximum z-axis value from a raster

Description

Set the upper bounds in the z-dimension for each location in the x and y dimensions from a raster.

Usage

setMaximumZfromRaster(mkde.obj, raster.layer)

Value

An updated MKDE list object is returned.

Arguments

mkde.obj

2D or 3D MKDE object created with initialize3DMKDE or initialize3DMKDE, respectively

raster.layer

A RasterLayer object representing the lower bounds of the space the animal may occupy in the z-dimension.

Author

Jeff A. Tracey, PhD
USGS Western Ecological Research Center, San Diego Field Station

James Sheppard, PhD
San Diego Zoo Institute for Conservation Research

Details

This function sets the upper bounds of the space the animal may occupy in the z-dimension. For example, the ascii.raster.filez argument may represent a raster for elevation for subterranean animals, or other surface.

Examples

library(raster)
data(dugongdem)
cell.sz <- mean(res(dugongdem))
ext <- extent(dugongdem)
nx <- ncol(dugongdem)
ny <- nrow(dugongdem)
mkde.obj <- initializeMKDE3D(ext@xmin, cell.sz, nx, ext@ymin, cell.sz,
ny, min(values(dugongdem), na.rm=TRUE), 50.0, 15)
mkde.obj <- setMaximumZfromRaster(mkde.obj, dugongdem)