mkde (version 0.2)

setMinimumZfromConstant: Set minimum z-axis value to a constant.

Description

Set the lower bounds in the z-dimension for each location in the x and y dimensions to a constant value.

Usage

setMinimumZfromConstant(mkde.obj, val)

Value

An updated MKDE list object is returned.

Arguments

mkde.obj

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

val

The value at which the lower bound should be set for all locations in the x and y dimensions.

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

Obviously, the lower bound must be less than the upper bound.

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 <- setMinimumZfromConstant(mkde.obj, -20.0)