Singular precision matrix warning in R

Asked Sep 22 '14 at 20:16

Active Sep 02 '16 at 12:30

Viewed 1,508 times

I'm running different model of this form:

gamm(H_1_3~ s(wcomp.x.cum, bs='cr')+s(wcomp.y.cum, bs='cr')+s(h_AST, bs='cr'), 
           na.action=na.omit,data=lag4_1DAY, method='REML',  weights=vf)

R doesn't throw me an Error (i.e. I have an output) but I have a warning like this one:

Warning message:
In logLik.reStruct(object, conLin):
  Singular precision matrix in level -3, block 1

what does it means?
is it a problem or can I live with it?

edited Sep 02 '16 at 12:30

Zheyuan Li

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asked Sep 22 '14 at 20:16

Filippo

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It is interesting that it is only a warning and not an error. So the function was apparently able to build a fit. Do the results look sensible? – IRTFM Sep 22 '14 at 20:27
looks like an overfitted model... – agstudy Sep 22 '14 at 20:53
@BondedDust What do you mean with 'Do the results look sensible?' – Filippo Sep 22 '14 at 21:01
Users may try different optimizers and/or optimization methods if warnings of this kind are encountered. – Dion Groothof Jan 15 '22 at 13:12

Singular precision matrix warning in R

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