Richard R. Liu
2009-Dec-02 12:13 UTC
[R] Cryptic error message from rfe (in caret package)
When using the function rfe I receive the warning In x == y : longer object length is not a multiple of shorter object length more than 50 times. I call rfe as follows: nbProfile <- rfe(features.train.50pct, truth.train.50pct, sizes = no.features, rfeControl = nbCtrl) where features.train.50pct data frame of 8 named columns, each of 487 rows, numeric truth.train.50pct factor of 487 logical elements sizes 1, 2, ..., 8 nbCtrl rfeControl(functions = nbFuncs, method = "cv", verbose = F, returnResamp = "final") Does anybody know to which objects the warnings refer? Richard R. Liu Dittingerstr. 33 CH-4053 Basel Switzerland Tel.: +41 61 331 10 47 Mobil: +41 79 708 67 66 Email: richard.liu at pueo-owl.ch
Good etiquette would be to email the maintainer (me) with a reproducibility example and the results of sessionInfo(). Max On Wed, Dec 2, 2009 at 7:13 AM, Richard R. Liu <richard.liu at pueo-owl.ch> wrote:> When using the function rfe I receive the warning > > In x == y : longer object length is not a multiple of shorter object length > > more than 50 times. > > I call rfe as follows: > > nbProfile <- rfe(features.train.50pct, truth.train.50pct, sizes > no.features, rfeControl = nbCtrl) > > where > features.train.50pct ? ?data frame of 8 named columns, each of 487 rows, > numeric > truth.train.50pct ? ? ? factor of 487 logical elements > sizes ? ? ? ? ? ? ? ? ? 1, 2, ..., 8 > nbCtrl ? ? ? ? ? ? ? ? ?rfeControl(functions = nbFuncs, method = "cv", > verbose = F, returnResamp = "final") > > Does anybody know to which objects the warnings refer? > > Richard R. Liu > Dittingerstr. 33 > CH-4053 Basel > Switzerland > > Tel.: ?+41 61 331 10 47 > Mobil: +41 79 708 67 66 > Email: ?richard.liu at pueo-owl.ch > > > > > ______________________________________________ > R-help at 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. > >-- Max