R Graphical Manual

Last data update: 2014.03.03

R: Compute default knots for a given x vector

default.knots

R Documentation

Compute default knots for a given x vector

Computes default knots for a given x vector.

default.knots(x, num.knots, knotchoice="quantiles")

`x`	The covariate. Note that for B-splines, only the range of `x` is considered.
`num.knots`	The number of knots. Defaults to `floor(n/max(4, floor(n/35)) - 1)`.
`knotchoice`	Either "equidistant" or "quantiles" for equidistant and quantile based knots, respectively. Note that in case of B-splines, knots are always equidistant.