Try: sapply(df, is.numeric)
On Tue, Dec 16, 2008 at 1:25 PM, Mark Heckmann <mark.heckm...@gmx.de> wrote: > Hi R-users, > > I want to apply a function to each column of a data frame that is numeric. > Thus I tried to check it for each column first: > > > apply(df, 2, function(x) is.numeric(x)) > > A60 A64 A66a A67 A71 A75a A80 > A85 A91 A95 A96 A97 A98 A99 > FALSE FALSE FALSE FALSE FALSE FALSE FALSE > FALSE FALSE FALSE FALSE FALSE FALSE FALSE > > I get only FALSE results although the variables are numeric. When I try the > following it works: > > > is.numeric(df$A60) > [1] TRUE > > What am I doing wrong? > > TIA > Mark > > ______________________________________________ > 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 [[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.
