Displaying 1 result from an estimated 1 matches for "pdldent".
Did you mean:
pdident
2010 Jun 15
1
lme, spline
Dear All,
I have a problem running this program on R. Z is a matrix of spline which is random
> fit<-lme(anc~X,random=pdIdent(~Z))
Error in getGroups.data.frame(dataMix, groups) :
Invalid formula for groups
What I have done wrong?