Extracts information, such as fitted values, influence functions
from a "locfit"
object.
lfknots(x, tr, what = c("x", "coef", "h", "nlx"), delete.pv = TRUE)
A matrix with one row for each fit point. Columns correspond to
the specified what
vector; some fields contribute multiple columns.
Fitted object from locfit()
.
Back transformation. Default is the invers link function from the Locfit object.
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).
If T
, pseudo-vertices are deleted.