How about
data[ , colnames]
Or
data[ , colnames[1]]
data[ , colnames[2]]
-Don
On 7/9/10 11:27 AM, "Jonathan Flowers" wrote:
> Hi
>
> I want to extract columns from a data frame using a vector with the desired
> column names.
>
> This short example uses the select argument in the subse
How about
data[,colnames(data)%in%colnames]
-Original Message-
From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] On
Behalf Of Jonathan Flowers
Sent: Friday, July 09, 2010 11:27 AM
To: r-help@r-project.org
Subject: [R] select columns from vector of column names
Hi
I want to extract columns from a data frame using a vector with the desired
column names.
This short example uses the select argument in the subset function to
accomplish what I am trying to do. Is there a better solution?
#names of desired columns
colnames <- c("col1","col3")
#my data
data
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