loess.control {stats}  R Documentation 
Set Parameters for loess
Description
Set control parameters for loess
fits.
Usage
loess.control(surface = c("interpolate", "direct"),
statistics = c("approximate", "exact", "none"),
trace.hat = c("exact", "approximate"),
cell = 0.2, iterations = 4, iterTrace = FALSE, ...)
Arguments
surface 
should the fitted surface be computed exactly
( 
statistics 
should the statistics be computed exactly, approximately or not at all? Exact computation can be very slow. Can be abbreviated. 
trace.hat 
Only for the (default) case 
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 
iterations 
the number of iterations used in robust fitting,
i.e. only if 
iterTrace 
logical (or integer) determining if tracing
information during the robust iterations ( 
... 
further arguments which are ignored. 
Value
A list with components
surface 

statistics 

trace.hat 

cell 

iterations 

iterTrace 
with meanings as explained under ‘Arguments’.