why "Singularity in Average Information Matrix"? how to do?

From: luansheng <luansheng_at_GMAIL.COM>
Date: Mon, 27 Oct 2008 14:06:28 +0800

Dear friends:

         I want to estimate the heritability of fish body weight. The model
is simple:


Data analysis for Flounder

 animal !A !P

 sire !A !P

 dam !A !P

 tank * !I




yaping.dat !ALPHA !SKIP 1 !MAKE

yaping.dat !SKIP 1 !MAXIT 500

wt ~ mu age !r animal


but asreml tell me Singularity in Average Information Matrix, I know from
the asreml manual that I need possibly modify model (overspecified) ,but
the model is very simple. How can I get the heritability of body weight ?



Luan sheng


Received on Wed Oct 27 2008 - 14:06:28 EST

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