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

[Chris Fonnesbeck]

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
2: 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?

Incidentally, is there additional documentation on the mcmc.list type,
other than in the coda docs? The information there is pretty thin, and
lacks illustrative examples.

Thanks,
Chris