| knots |
Extraction of fit-point information from a Locfit object.
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knots |
Usage:
knots(x, tr, what, delete.pv, ...)
Description:
Extracts information, such as fitted values, influence functions
from a "locfit" object.
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.
Key Words:
locfit
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