RE: [R] extract columns from a dataframe

From: John Fox <>
Date: Mon 05 Jul 2004 - 23:05:06 EST

Dear Rado,

If the data frame is named df and nms is a vector names of the columns that you want to exclude, then

df[,-sapply(nms, function(x) which(x == names(df)))]

Should give you what you want.

I hope that this helps,

> -----Original Message-----
> From:
> [] On Behalf Of Rado Bonk
> Sent: Monday, July 05, 2004 7:54 AM
> To:
> Subject: [R] extract columns from a dataframe
> Dear R users,
> I'm coming back to R after while. I have a data frame with
> 200 columns, each column has a name. How to extract all
> columns to a new dataset, but the specified (by names) ones?
> I was playing with that for a little bit using the vector
> syntax but got several syntax errors. mailing list PLEASE do read the posting guide! Received on Mon Jul 05 23:08:19 2004

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