lfknots {locfit} | R Documentation |
Extraction of fit-point information from a Locfit object.
Description
Extracts information, such as fitted values, influence functions
from a "locfit"
object.
Usage
lfknots(x, tr, what = c("x", "coef", "h", "nlx"), delete.pv = TRUE)
Arguments
x |
Fitted object from locfit() .
|
tr |
Back transformation. Default is the invers link function from the Locfit
object.
|
what |
What to return; default is c("x","coef","h","nlx") .
Allowed fields are x (fit points); coef (fitted values);
f1 (local slope); nlx (length of the weight diagram);
nlx1 (estimated derivative of nlx ); se (standard errors);
infl (influence function); infla (slope of influence function);
lik (maximixed local log-likelihood and local degrees of freedom);
h (bandwidth) and deg (degree of fit).
|
delete.pv |
If T , pseudo-vertices are deleted.
|
Value
A matrix with one row for each fit point. Columns correspond to
the specified what
vector; some fields contribute multiple columns.
[Package
locfit version 1.5-9.1
Index]