On Apr 28, 2010, at 3:07 AM, Albert-Jan Roskam wrote:
Hi,
There's probably an easier or more readable way to do it, but:
df <- data.frame(cbind(letters, var= runif(26, 2, 3)))
df[df$letters[grep("[G]", df$letters, ignore.case=TRUE)],]
To my eyes that appears a bit redundant. Wouldn't this approach with
one less "layer" work just as well:
df[ grep("[G]", df$letters, ignore.case=TRUE), ]
Cheers!!
Albert-Jan
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
All right, but apart from the sanitation, the medicine, education,
wine, public order, irrigation, roads, a fresh water system, and
public health, what have the Romans ever done for us?
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
--- On Wed, 4/28/10, Alexis Champsaur <alexis.champs...@gmail.com>
wrote:
From: Alexis Champsaur <alexis.champs...@gmail.com>
Subject: [R] Selecting rows based on contents of string
To: r-h...@stat.math.ethz.ch
Date: Wednesday, April 28, 2010, 1:49 AM
Hi there,
I have a data frame with a column named "Flags", whose contents are
strings
containing any of the following characters, multiple characters
allowed:
A,B,C,D,E,F,G.
Here is the head:
GeocodeID PlaceID CountyCode CBSACode StateProvCode
PropertyTypeGroupID
Flags
1 0 0 0 0
AK 1 ABC
2 0 0 0 0
AK 2 AC
3 0 0 0 0
AK 3 BC
4 0 0 0 0
AK 4 CD
5 0 0 0 0
AK 14 CD
6 0 0 0 0
AK 15 ACDE
7 0 0 0 0
AL 1
I want to select only the rows whose "Flag" element contains the
character
G. Is there a simple way to do this, or should I perhaps come up
with a
different system of flags, which is totally up to me?
Thanks,
Alex
[[alternative HTML version deleted]]
______________________________________________
R-help@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
[[alternative HTML version deleted]]
______________________________________________
R-help@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
______________________________________________
R-help@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
