[R] Help with factanal and missing values

[Antonio Prioglio]

Hi list,

I'm performing a series of confirmatory factor analysis on different 
groupings of items from data collected with questionnaires. There are some 
missing values.

For those sets with no missing values I call
factanal(datamatrix,factors=n)

where datamatrix is a table of all observations for the items under 
investigation.

This call fails when there are missing values.
help(factanal) does not give an example on calls with  na.action and and 
mentiones a formula.

(Venables and Ripley, 2002 give only one example on p. 323 for a case 
where the covariance has already been calculated)

Could someone give me an example on such a call for a simple CFA?

Thanks for the help.



Saluti,
Antonio Prioglio

-- 
We are what we repeatedly do. Excellence, then, is not an act, but a habit.
							Aristoteles


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