If you can provide a reproducible example, i.e. a *small* subset of your
data.frame that illustrates the error - as it would allow those on the list
to attempt to replicate.

"some info" can't be sourced in.  Try 'dput' and paste the results.

Jeff

On Sat, Jul 9, 2011 at 10:31 AM, Luca Meyer <lucam1968@gmail.com> wrote:

> Hello,
>
> I had a piece of code regularly working on R 2.12 now giving error on the
> newly installed R 2.13:
>
> d5 <- aggregate(d4[,c("ore")],list(d4$progetto),sum)
>
> Errore in units == units[1L] : confronto tra questi tipi non implementato -
> that's basically saying "comparison between these types has not been
> implemented"
>
> How can I solve this issue? Please find attached some info about data frame
> d4
>
> > class(d4)
> [1] "data.frame"
> > names(d4)
> [1] "data"      "anno"      "mese"      "settimana" "progetto"  "ore"
> > class(d4$ore)
> [1] "difftime"
> > class(d4$progetto)
> [1] "factor"
>
> Also, this is the R version I have installed:
>
> R version 2.13.0 (2011-04-13)
> Copyright (C) 2011 The R Foundation for Statistical Computing
> ISBN 3-900051-07-0
> Platform: x86_64-apple-darwin9.8.0/x86_64 (64-bit)
>
> Thanks,
> Luca
>
> _______________________________________________
> R-SIG-Mac mailing list
> R-SIG-Mac@r-project.org
> https://stat.ethz.ch/mailman/listinfo/r-sig-mac
>



-- 
Jeffrey Ryan
jeffrey.ryan@lemnica.com

www.lemnica.com
www.esotericR.com

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