[R] numerics only

[Thomas Lumley]

On Mon, 11 Nov 2002, Blew, Ted wrote:

> is there a way to identify the *numeric* data elements (columns) in a
> data.frame that contains both numeric and character data elements?  thanks
> in advance, ted.

   sapply(dataframe, is.numeric)
or
   which(sapply(data.frame, is.numeric))

	-thomas

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