Could you give us the traceback? (In case you don't know, just type
traceback() right after you got the error message.) I can't reproduce the
error, so it gets a bit difficult to solve without having the real data.

Cheers
Joris

On Wed, Jun 2, 2010 at 6:51 PM, Dave_F <friedenbergd@battelle.org> wrote:

>
> Hello fellow R users,
>
> I have been getting a strange error message when using the cv.glmnet
> function in the glmnet package. I am attempting to fit a multinomial
> regression using the lasso. covars is a matrix with 80 rows and roughly
> 4000
> columns, all the covariates are binary. resp is an eight level factor. I
> can
> fit the model with no errors but when I try to cross-validate after about
> 30
> seconds I get the following:
>
>
> > glmnet.fit = glmnet(covars,resp,family="multinomial")
> > glmnet.cv = cv.glmnet(covars,resp,family="multinomial",type="class")
> Error in if (outlist$msg != "Unknown error") return(outlist) :
>  argument is of length zero
>
> It seems like it makes it through the first couple folds but trips up
> somewhere in the middle.
> The example in the documentation works perfectly on my machine. Any ideas
> on
> what the problem may be?
>
> Thanks!
> Dave
> --
> View this message in context:
> http://r.789695.n4.nabble.com/glmnet-strange-error-message-tp2240458p2240458.html
> Sent from the R help mailing list archive at Nabble.com.
>
> ______________________________________________
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> PLEASE do read the posting guide
> http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
>



-- 
Joris Meys
Statistical Consultant

Ghent University
Faculty of Bioscience Engineering
Department of Applied mathematics, biometrics and process control

Coupure Links 653
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tel : +32 9 264 59 87
Joris.Meys@Ugent.be
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