Description
splinek returns the spline knot points generated via the spl() model function.
Usage
splinek(x, k = 0, predict.points = NULL)
Arguments
x |
A numeric vector. |
k |
The number of equally spaced knot points for a cubic smoothing spline. If zero (the default) or omitted, k is set to asreml.options()$knots, in which case the number of knot points used will be min(unique(x), asreml.options()$knots). |
predict.points |
An optional vector of points to be included in the design matrix for prediction. |
Value
| A list including the following components: | |
| knotpoints | The knot points generated by ASReml. |
| zknots | The spline design matrix at the knot points. |