Try this: predict(fit10,testX[1,,drop = FALSE])
On Fri, Sep 2, 2011 at 5:05 PM, Eduardo M. A. M.Mendes <emammen...@gmail.com> wrote: > Hello > > > > Please see the example below > > > >> class(testX) > > [1] "matrix" > >> class(testX[1,]) > > [1] "numeric" > > > > Why not matrix? What am I missing here? Is there a way to keep the same > class? > > > > The reason for the question is that I want to implement a k-step ahead > prediction for my own routines and R wrecks does not seem to like [1,] as > shown below. > > > >> predict(fit10,testX[1,]) > Error in knnregTrain(train = c(1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, : > dims of 'test' and 'train differ >> predict(fit10,testX[1:2,]) > [1] 81.00 76.36 > > > > Many thanks > > > > Ed > > > > > [[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. > -- Henrique Dallazuanna Curitiba-Paraná-Brasil 25° 25' 40" S 49° 16' 22" O ______________________________________________ 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.
