Displaying 2 results from an estimated 2 matches for "cstnatpar".
2003 Mar 01
1
error message from gls(), unstructured in lower triangle, identical diagonal, help.
...am fitting a model for repeated measures, using
gls(). The var-cov structure is UNSTRUCTURED in lower
triangle and identical for the diagonal, for which I
still have no idea how to fit using PROC MIXED.
The error message is as follows:
Error in "coef<-.corNatural"(*tmp*, value =
log((cStNatPar + 1)/(1 - cStNatPar))) :
NA/NaN/Inf in foreign function call (arg 1)
I have no idea why that will happen, since the same
codes work well for other similar data.
The data and the codes are as follows.
I am wondering whether I can get help here.
Thanks a lot!
Peng Liu
-------------------...
2004 Jul 23
0
problem lme using corSymm()
...3),each=18,times=2))
datamat$B<-as.factor(rep(c("one","two"),each=54))
Then fitting the model:
fm.datamat<-lme(values~A*B,data=datamat,random=~1|subject,correlation=corSym
m())
produced this error:
"Error in "coef<-.corNatural"(`*tmp*`, value = log((cStNatPar + 1)/(1 - :
NA/NaN/Inf in foreign function call (arg 1)"
If I skip observation subject 15 (row 15 above) the computation is
successfull. Is it because of the similar values ? Does it fail to estimate
a general variance structure ? Is there a better way than skipping row 15 ?
Thanks...