[R] No LOGLM coefficients

Cor en Aylin Cor.Berrevoets at gironet.nl
Wed Apr 14 21:17:17 CEST 1999

Dear R-helpers,

Im trying to fit a Log-linear model on a dataset with bird counts from
60 sites over 14 years for 12 months each (factors for the models). One
of the aims is to predict the missing values in this dataset with model
Ive first tried to work with GLM's, that worked fine except for models
with one or more interaction-terms. The GLMs run, run .. for hours. So I
switched to using LOGLM (MASS-library), and that worked swift. The
deviances were the same so that worked well. The only problem is that my
data contains both zero's (rarely) and  quite a lot of NA's. LOGLM
doesn't report the params in these cases (the help file reports this)
but I still want to use them for predicting my missing values.

Does anybody have a suggestion to by-pass this problem ?


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