locfit: lfknots – R documentation

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lfknots

Extraction of fit-point information from a Locfit object.

Extracts information, such as fitted values, influence functions from a "locfit" object.

lfknots(x, tr, what = c("x", "coef", "h", "nlx"), delete.pv = TRUE)

`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.

A matrix with one row for each fit point. Columns correspond to the specified what vector; some fields contribute multiple columns.

Local Regression, Likelihood and Density Estimation

v1.5-9.4

GPL (>= 2)

Authors

Catherine Loader [aut], Jiayang Sun [ctb], Lucent Technologies [cph], Andy Liaw [cre]

Initial release

2020-03-24