Set Parameters for Loess
Usage
loess.control(surface=c("interpolate", "direct"),
statistics=c("approximate", "exact"),
trace.hat=c("exact", "approximate"),
cell=0.2, iterations=4, ...)
Arguments
surface
|
should be fitted surface be computed exactly or via
interpolation from a kd tree?
|
statistics
|
should the statistics be computed exactly or
approximately? Exact computation can be very slow.
|
trace.hat
|
should the trace of the smoother matrix be computed
exactly or approximately. It is recommended to use the approximation
for more than about 1000 data points.
|
cell
|
if interpolation is used this controls the accuracy of the
approximation via the maximum number of points in a cell in the kd
tree. Cells with more than floor(n*span*cell) points are subdivided.
|
iterations
|
the number if iterations used in robust fitting.
|
Description
Set control parameters for loess
fits.Value
A list with components
surface
|
|
statistics
|
|
trace.hat
|
|
cell
|
|
iterations
|
|
Author(s)
B.D. RipleySee Also
loess