[R] Unexpected warnings from summary() on mcmc.list objects

Ben Bolker bolker at ufl.edu
Mon Apr 26 16:03:01 CEST 2010

Chris Fonnesbeck <fonnesbeck <at> gmail.com> writes:

> I am trying to get summary statistics from WinBUGS/JAGS output in the
> form of mcmc.list objects, using the summary() function. However, I
> get odd warning messages:
> Warning messages:
> 1: In glm.fit(x = X, y = Y, weights = weights, start = start, etastart
> = etastart,  :
>   algorithm did not converge
> I assume this is a bug, since glm's should not be fit when simply
> trying to summarize the elements of a list. Any idea what is going on
> here?

  Are you using JAGS?  Are you sure that these warning messages
are really from summary() and not left over from the JAGS run?
I think I have seen similar messages from JAGS ...

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