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addrandomsloperange
2012 Oct 08
0
nlminb problem, convergence error code = 1
Hi, I was trying to do a multi-level modeling of the data using the nlme
package. I encounter the following message:
> addRandomSlopeRange<- lme(FAN.range ~ CHN.range + Age + Block.T,
data=data.block, random = ~CHN.range|CHI, method = "ML", na.action=na.omit)
Error in lme.formula(FAN.range ~ CHN.range + Age + Block.T, data =
data.block, :
nlminb problem, convergence error code = 1
message = iteration limit reached...