Joined: 22 Aug 2008
Location: John Innes Centre
|Please could someone explain what's happening when I get this message:
******** Warning 16, code VD 39, statement 1 on line 3032
Command: REML [PRINT=model,components,waldTests; PSE=differences; FMETHOD=automa
Error in AI algorithm when forming denominator DF for approximate F-tests.
In the analysis I'm currently doing with one of my students, I get this message with one model but not with a more complex model. Also, with this message, the Wald Tests table prints out chi-sqd tests of Wald/df. If this message doesn't appear, I get an F-test (which I suppose is preferable).
An explanation at the level of "competent user but not card-carrying statistician" would be most welcome.
Prof James K M Brown
Dept of Disease & Stress Biology, John Innes Centre,
Colney Lane, Norwich, NR4 7UH, England
Phone 0044 1603 450615 Fax 0044 1603 450045