| model.matrix.gam {mgcv} | R Documentation |
Extract model matrix from GAM fit
Description
Obtains the model matrix from a fitted gam object.
Usage
## S3 method for class 'gam'
model.matrix(object, ...)
Arguments
object |
fitted model object of class |
... |
other arguments, passed to |
Details
Calls predict.gam with no newdata argument and
type="lpmatrix" in order to obtain the model matrix of object.
Value
A model matrix.
Author(s)
Simon N. Wood simon.wood@r-project.org
References
Wood S.N. (2006b) Generalized Additive Models: An Introduction with R. Chapman and Hall/CRC Press.
See Also
Examples
require(mgcv)
n <- 15
x <- runif(n)
y <- sin(x*2*pi) + rnorm(n)*.2
mod <- gam(y~s(x,bs="cc",k=6),knots=list(x=seq(0,1,length=6)))
model.matrix(mod)
[Package mgcv version 1.9-1 Index]