remove last row of a data frame

-----Original Message-----
From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-project.org]
On Behalf Of e-letter
Sent: Tuesday, December 11, 2012 11:45 PM
To: r-help at r-project.org
Subject: [R] remove last row of a data frame

Readers,

For a data set 'a':

1
2
3
4

Please what is the syntax to remove the last row and create a new object
'b':

1
2
3

Thanks.

If by data set a you mean a data frame called a, then something like this
should work:

b <- a[-nrow(a),]

If you haven't already read the manual, "An Introduction to R", that ships
with every copy of R, then now is the time.