[R] warning message from nlme
Chia, Yen Lin
yen.lin.chia at intel.com
Mon Jan 9 18:42:20 CET 2006
Sorry for the sloppy description of problem.
I have a dataset called dense. I want to decompose the
variability/variation into different components such as wafer, axis,
orientation and data. These variables are all categorical data. I
converted axis, orientation and location into factors before I ran the
The algorithm returns the standard deviation of each random effect, but
also gives the warning message:
- not meaningful for factors in: Ops.factor(y[revOrder], Fitted)
I wonder what does this warning message mean? If the factors are not
meaningful, how can I find out which factors the warning message is
referring to? Thanks.
From: Berton Gunter [mailto:gunter.berton at gene.com]
Sent: Monday, January 09, 2006 9:34 AM
To: Chia, Yen Lin
Subject: RE: [R] warning message from nlme
> Can someone point out what is the meaning of this warning message? I
> tried to look at Ops.factor, but I don't understand it since I'm
> relatively new to R. Thanks.
No. **Read the posting guide** and provide sufficient details in your
so that an answer can be given.
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