How to exclude a column by name?

Linlin Yan · 2009-05-27T10:55:35Z

Hope this helps: > df df X1 X2 X3 X4 X5 1 1 3 5 7 9 2 2 4 6 8 10 > df[,-2] X1 X3 X4 X5 1 1 5 7 9 2 2 6 8 10 > df[,-which(names(df)=="X2")] X1 X3 X4 X5 1 1 5 7 9 2 2 6 8 10 On Wed, May 27, 2009 at 6:37 PM, Zeljko Vrba wrote: > Given an arbitrary data frame, it is easy to exclude a column given its index: > df[,-2]. ?How to do the same thing given the column name? ?A naive attempt > df[,-"name"] did not work :)

Linlin Yan

Wed, May 27, 2009 3:55 AM

Hope this helps:

X1 X2 X3 X4 X5
1  1  3  5  7  9
2  2  4  6  8 10

X1 X3 X4 X5
1  1  5  7  9
2  2  6  8 10

X1 X3 X4 X5
1  1  5  7  9
2  2  6  8 10

On Wed, May 27, 2009 at 6:37 PM, Zeljko Vrba <zvrba at ifi.uio.no> wrote:

Thread (9 messages)

Zeljko Vrba How to exclude a column by name? May 27 Paul Hiemstra How to exclude a column by name? May 27 Linlin Yan How to exclude a column by name? May 27 Zeljko Vrba How to exclude a column by name? May 27 Peter Dalgaard How to exclude a column by name? May 27 Henrique Dallazuanna How to exclude a column by name? May 27 Stavros Macrakis How to exclude a column by name? May 27 Dieter Menne How to exclude a column by name? May 27 Wacek Kusnierczyk How to exclude a column by name? May 27