I'm sorry I neglected to send this to the list.
Arthur
------------- Begin Forwarded Message -------------
Date: Mon, 10 Jul 2000 13:39:24 +1000 (EST)
From: Arthur Gilmour <gilmoua@apollo>
Subject: Re: Bending
To: cbalden@entelchile.net
Mime-Version: 1.0
Content-MD5: 59n6ycn9aNUB10z/Jv+KuA==
Dear Hermann,
Bending is invoked when you say you want a positive definite matrix but
the data points to a negative definite matrix.
Since there is a functional realationship,
it is probably better to derive the
components for the 3rd trait from those
of the first 2 rather than trying to estimate them.
You could try all pairwise combinations.
Another possability is to remove the !GP requirement [ie use !GU]
Basically, it is very unlikely you will obtain a sensible answer
fitting 3 functionally linked traits with !GP.
Using !GU may also fail if the matrix becomes singular which it
would if you analysed A, B and A+B
Arthur
<><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><>
Arthur Gilmour PhD mailto:Arthur.Gilmour@agric.nsw.gov.au
Principal Research Scientist (Biometrics) fax: <61> 2 6391 3899
NSW Agriculture <61> 2 6391 3922
Orange Agricultural Institute telephone work: <61> 2 6391 3815
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While they watched, He was taken up,
and a cloud received Him out of their sight.
And while they looked steadfastly toward heaven as He went up,
behold two men stood by them in white apparel who also said
"Men of Galilee, why do you stand gazing up into heaven?
This same Jesus who was taken up from you into heaven,
will so come in like manner as you saw Him go into heaven."
Acts 1 9:11
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------------- End Forwarded Message -------------
<><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><>
Arthur Gilmour PhD mailto:Arthur.Gilmour@agric.nsw.gov.au
Principal Research Scientist (Biometrics) fax: <61> 2 6391 3899
NSW Agriculture <61> 2 6391 3922
Orange Agricultural Institute telephone work: <61> 2 6391 3815
Forest Rd, ORANGE, 2800, AUSTRALIA home: <61> 2 6362 0046
ASREML is still free by anonymous ftp from pub/aar on ftp.res.bbsrc.ac.uk
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<> <> <> <> <> <> <>
While they watched, He was taken up,
and a cloud received Him out of their sight.
And while they looked steadfastly toward heaven as He went up,
behold two men stood by them in white apparel who also said
"Men of Galilee, why do you stand gazing up into heaven?
This same Jesus who was taken up from you into heaven,
will so come in like manner as you saw Him go into heaven."
Acts 1 9:11
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