grasp.start {grasper} | R Documentation |
Starting formula creator, generally called by grasp.model
grasp.start(cX, sX, df = 4, calcdf = FALSE, trace = TRUE)
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 |
This function creates the starting formula. It isn't of any use by itself. It is called by grasp.model
Fabien Fivaz fabien.fivaz@bluewin.ch. Ported to R from GRASP http://www.cscf.ch/grasp/ for S-Plus written by A. Lehmann, J.R. Leathwich and J. McC Overton. Look at http://www.fivaz.ch/grasper/index.html for details and update.
grasp.model
and grasp.scope
.