grasp.start {grasper}R Documentation

Formula Creator

Description

Starting formula creator, generally called by grasp.model

Usage

grasp.start(cX, sX, df = 4, calcdf = FALSE, trace = TRUE)

Arguments

cX Selected predictors to be used in the form of a vector with column numbers
sX List coontaining the different Xs for each Ys
df Number of degrees of freedom
calcdf Let the smooth function "calculate" the degrees of freedom, see gam for details.
trace Verbose output

Details

This function creates the starting formula. It isn't of any use by itself. It is called by grasp.model

Author(s)

Fabien Fivaz fabien.fivaz@bluewin.ch. Ported to R from GRASP for S-Plus written by A. Lehmann, J.R. Leathwich and J. McC Overton. Look at http://www.cscf.ch/grasp for details and update.

See Also

grasp.model and grasp.scope.


[Package grasper version 0.4-3 Index]