setMinimumZfromRaster: Set minimum z-axis values from a raster

Description Usage Arguments Details Value Author(s) Examples

View source: R/mkdeFunctions.R

Description

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

Usage

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setMinimumZfromRaster(mkde.obj, raster.layer)	

Arguments

mkde.obj

A 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.

Details

This function sets the lower bounds of the space the animal may occupy in the z-dimension. For example, the ascii.raster.file argument may represent a raster for elevation, depth of the sea floor, or other surface.

Value

An updated MKDE list object is returned.

Author(s)

Jeff A. Tracey, PhD
USGS Western Ecological Research Center, San Diego Field Station
[email protected]
James Sheppard, PhD
San Diego Zoo Institute for Conservation Research
[email protected]

Examples

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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 <- setMinimumZfromRaster(mkde.obj, dugongdem-20.0)

mkde documentation built on May 2, 2019, 6:46 a.m.