Re: [R] get rid of error in Factor Analysis

From: Prof Brian Ripley <ripley_at_stats.ox.ac.uk>
Date: Wed 19 Jul 2006 - 18:51:26 EST

?try

On Wed, 19 Jul 2006, Robert Mcfadden wrote:

> Dear All,
>
> I wrote a program and there is a loop. At each iteration I use maximum
> likelihood factor analysis (?factanal). Output of factor analysis I use
> later (in this loop). Unfortunately from time to time I get an error message
> (I paste it below) and everything is stopped. Is it possible to write a
> condition that if error appears in factor analysis (FA), change input data
> for FA and do it again? Example
>
>
>
> for (i in 1:1000){
>
> FA<-factanal(data,factor=3)
>
> If error appears change data to data2 and do factor analysis again
>
> #rest of the program
>
> ............
>
> ............
>
> }
>
>
>
> Best,
>
> Robert
>
>
>
> Error in optim(start, FAfn, FAgr, method = "L-BFGS-B", lower = lower, :
>
> L-BFGS-B needs finite values of 'fn'
>
> In addition: Warning message:
>
> NaNs produced in: log(x)
>
>
>
>
>
>
>
>
>
>
> [[alternative HTML version deleted]]
>
> ______________________________________________
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> and provide commented, minimal, self-contained, reproducible code.
>

-- 
Brian D. Ripley,                  ripley@stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford,             Tel:  +44 1865 272861 (self)
1 South Parks Road,                     +44 1865 272866 (PA)
Oxford OX1 3TG, UK                Fax:  +44 1865 272595

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Received on Wed Jul 19 18:55:17 2006

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