negative_pivots

From: Agus Susanto <asusanto_at_UOGUELPH.CA>
Date: Sat, 9 Jun 2007 11:57:23 -0400

Dear all,
I was fitting an animal model including GIV for my simulated data and I
had the following message:

2 singularities, 0 negative_pivots in G matrix of order 422
obtained from ibd.grm
   133 4
 Determinant -327.3353
 Fault 0 Error reading ibd.grm

Can somebody please explain the situation and how to solve that problem.
Many thanks for any reply. 

--
Agus Susanto
Department of Animal and Poultry Science
Centre for Genetic Improvement of Livestock
University of Guelph, Guelph, Ontario, Canada N1G 2W1
Rm.128, Phone (519) 824-4120 X-58353
Received on Wed Jun 09 2007 - 11:57:23 EST

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