hatmatrix(formula, ...)
formula
| model formula. |
...
|
Other arguments to locfit and
locfit.raw .
|
hatmatrix()
computes the weight diagrams (also known as
equivalent or effective kernels) for a local regression smooth.
Essentially, hatmatrix()
is a front-end to locfit()
,
setting a flag to compute and return weight diagrams, rather than the
fit.locfit
fit point.
If ev="data"
, this is the transpose of the hat matrix.locfit
, plot.locfit.1d
, plot.locfit.2d
,
plot.locfit.3d
, lines.locfit
, predict.locfit