warning message from nlme

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warning message from nlme

Chia, Yen Lin
Hi all,

 

I tried to do a variance components using nlme, but I got the following
warning mesage

 

#####################################################

not meaningful for factors in: Ops.factor(y[revOrder], Fitted)

######################################################

 

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.

 

Yen Lin


        [[alternative HTML version deleted]]

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Re: warning message from nlme

Chia, Yen Lin
Hi all,

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
analysis:

lme(Data~1,random=~1|Wafer/axi/ori/loc,data=Dense)

The algorithm returns the standard deviation of each random effect, but
also gives the warning message:

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.

Yen Lin





-----Original Message-----
From: Berton Gunter [mailto:[hidden email]]
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
post
so that an answer can be given.

-- Bert

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Re: warning message from nlme

Doran, Harold
In reply to this post by Chia, Yen Lin
Yen Lin:

I'd like to try and offer a little help, but I'm still unclear on your
data structure and problem. You say, they are all categorical variables.
But, does this apply also to your dependent variable? If so, lme is the
wrong function to use.

You also say you want to decompose tha variation into wafer, axis,
orientation and data. But then, what is "loc". Do you mean you want to
decompose the variation in data, your DV, into multiple components
including wafer, axis, orientation and loc?

Maybe if you can take some time to clarify your data structure in more
detail and why your lme call is structured as it is it might be easier
to help.

Harold


-----Original Message-----
From: [hidden email]
[mailto:[hidden email]] On Behalf Of Chia, Yen Lin
Sent: Monday, January 09, 2006 12:42 PM
To: Berton Gunter
Cc: [hidden email]
Subject: Re: [R] warning message from nlme

Hi all,

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
analysis:

lme(Data~1,random=~1|Wafer/axi/ori/loc,data=Dense)

The algorithm returns the standard deviation of each random effect, but
also gives the warning message:

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.

Yen Lin





-----Original Message-----
From: Berton Gunter [mailto:[hidden email]]
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
post so that an answer can be given.

-- Bert

______________________________________________
[hidden email] mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide!
http://www.R-project.org/posting-guide.html

______________________________________________
[hidden email] mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html