Message-ID: <89C63F06-96DB-4E6B-9932-B1647D61E160@gmail.com>
Date: 2011-07-09T15:31:20Z
From: Luca Meyer
Subject: R code not working under R version 2.13 for Mac
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