Set minimum z-axis value to a constant.
Set the lower bounds in the z-dimension for each location in the x and y dimensions to a constant value.
setMinimumZfromConstant(mkde.obj, val)
mkde.obj |
2D or 3D MKDE object created with
|
val |
The value at which the lower bound should be set for all locations in the x and y dimensions. |
Obviously, the lower bound must be less than the upper bound.
An updated MKDE list object is returned.
Jeff A. Tracey, PhD
USGS Western Ecological Research Center, San Diego Field Station
jatracey@usgs.gov
James Sheppard, PhD
San Diego Zoo Institute for Conservation Research
jsheppard@sandiegozoo.org
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)
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