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paper_size_type_income
2009 Nov 24
0
can't use function vcov with a GAMLSS object??
...of the model "summary: vcov has
failed, option qr is used instead"
In which case I was wondering if anyone could help me out by explaining how
I can find the covariance matrix equivalent without using vcov?
The code and error messages I got for vcov are as follows.
> vcov(paper_size_type_income)
The following object(s) are masked _by_ .GlobalEnv :
child id paper
Error in gamlssNonLinear(family = RG, data = paper3, y = paper, mu.formula =
paper ~ :
NAs in y - use na.omit()
I then try using na.omit and I get a different error message (even though
ther...