From: Bill Shipley <bill.shipley_at_usherbrooke.ca>

Date: Wed 11 May 2005 - 04:46:32 EST

R-help@stat.math.ethz.ch mailing list

https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html Received on Wed May 11 04:52:33 2005

Date: Wed 11 May 2005 - 04:46:32 EST

intervals(fit3,which="var-cov")

I get the following error message:

Problem in intervals.lme(fit3, which = "var..: Cannot get confi

dence intervals on var-cov components: Non-positive definite ap

- how should I interpret such a strong correlation?
- how can I obtain confidence intervals for these correlations between the random components?

Any help is appreciated.

Bill Shipley

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R-help@stat.math.ethz.ch mailing list

https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html Received on Wed May 11 04:52:33 2005

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