Re: variance component restriction

From: <arthur.gilmour_at_DPI.NSW.GOV.AU>
Date: Tue, 24 Jan 2006 11:32:45 +1100

Dear Dave
I have a simple univariate model and want to fix the value of a variance
component (not variance ratio). Any suggestions? I have tried specifying
the variance structures the long way but I can only get ASREML to fix the

*** You need to change the job to do the analysis on the Variance scale
(say residual var is about 100)

y ~ fixed_effects !r animal mqtl
1 1 2
0 0 I 100 !S2==1
animal 1
animal 0 AINV 30
mqtl 1
mqtl 0 GIV 10 !GF

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Arthur Gilmour PhD
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Received on Sun Jan 24 2006 - 11:32:45 EST

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