Hi Max,

I think I get the cause of this error. I left unintentionally some NA's in
the y parameter of train().

Here is the example to reproduce it:
X <- matrix(seq(1:100, 10, 10)
Y <- seq(1:10)
Y[1] <- NA
fit <- train(X, Y, method="glmnet", preProcess=c("center","scale"))

Regards,
  Ferran


2013/6/11 Mxkuhn <mxkuhn@gmail.com>

> The data size isn't an issue. Can you send a reproducible example?
>
> Max
>
>
> On Jun 11, 2013, at 10:31 AM, Ferran Casarramona <
> ferran.casarramona@gmail.com> wrote:
>
> > Hello,
> >
> > I'm training a set of data with Caret package using an elastic net
> (glmnet).
> > Most of the time train works ok, but when the data set grows in size I
> get
> > the following error:
> > Error en { :
> >  task 1 failed - "arguments imply differing number of rows: 9, 10"
> >
> > and several warnings like this one:
> > 1: In eval(expr, envir, enclos) :
> >  model fit failed for Resample01
> >
> > My call to train function is like this:
> > fit <- train(TrainingPreCols, TrainingFrame[,PCol], method="glmnet",
> > preProcess = c("center","scale"))
> >
> > When TrainingPreCols is 17420 obs. of 27 variables, the function works
> ok.
> > But with a size of 47000 obs of 27 variables I get the former error.
> >
> > ¿Could be the amount of data the cause of this error?
> >
> > Any help is appreciated,
> >  Ferran
> >
> > P.D.:
> > This is my sessionInfo()
> > R version 2.15.0 (2012-03-30)
> > Platform: x86_64-pc-mingw32/x64 (64-bit)
> >
> > locale:
> > [1] LC_COLLATE=Spanish_Spain.1252  LC_CTYPE=Spanish_Spain.1252
> > LC_MONETARY=Spanish_Spain.1252
> > [4] LC_NUMERIC=C                   LC_TIME=Spanish_Spain.1252
> >
> > attached base packages:
> > [1] stats     graphics  grDevices utils     datasets  methods   base
> >
> > other attached packages:
> > [1] glmnet_1.9-3    Matrix_1.0-12   doSNOW_1.0.7    iterators_1.0.6
> > snowfall_1.84-4
> > [6] snow_0.3-12     caret_5.16-04   reshape2_1.2.2  plyr_1.8
> > lattice_0.20-6
> > [11] cluster_1.14.4  foreach_1.4.1
> >
> > loaded via a namespace (and not attached):
> > [1] codetools_0.2-8 grid_2.15.0     stringr_0.6.2   tools_2.15.0
> >
> >    [[alternative HTML version deleted]]
> >
> > ______________________________________________
> > R-help@r-project.org mailing list
> > https://stat.ethz.ch/mailman/listinfo/r-help
> > PLEASE do read the posting guide
> http://www.R-project.org/posting-guide.html
> > and provide commented, minimal, self-contained, reproducible code.
>

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