Dear all
I try to refine my nlme models and with partial success. The model is
refined and fitted (using Pinheiro/Bates book as a tutorial) but when
I try to plot
plot(augPred(fit4))
I obtain
Error in predict.nlme(object, value[1:(nrow(value)/nL), , drop =
FALSE], :
Levels (0,3.5],(3.5,5],(5,7],(7,Inf] not allowed for
vykon.fac
>
Is it due to the fact that I have unbalanced design with not all
levels of vykon.fac present in all levels of other explanatory factor
variable?
I try to repeat 8.19 fig which is OK until I try:
fit4 <- update(fit2, fixed = list(A+B~1,xmid~vykon.fac, scal~1),
start = c(57, 100, 700, rep(0,3), 13))
I know I should provide an example but maybe somebody will be clever
enough to point me to an explanation without it.
nlme version 3.1-75
SSfpl model
R 2.4.0dev (but is the same in 2.3.1), W2000.
Thank you
Best regards.
Petr PikalPetr Pikal
[EMAIL PROTECTED]
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