| hatmatrix {locfit} | R Documentation |
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.
hatmatrix(formula, dc, ...)
formula |
model formula. |
dc |
Derivative adjustment (to be passed to locfit.raw. |
... |
Other arguments to locfit and
locfit.raw.
|
A matrix with n rows and p columns; each column being the
weight diagram for the corresponding 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