[R] Selecting rows based on contents of string

[Peter Alspach]

Tena koe Alexis

?regexpr

yourDataFrame[regexpr('G', yourDataFrame$Flags)>0,]

HTH ...

Peter Alspach

> -----Original Message-----
> From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-
> project.org] On Behalf Of Alexis Champsaur
> Sent: Wednesday, 28 April 2010 11:49 a.m.
> To: r-help at stat.math.ethz.ch
> Subject: [R] Selecting rows based on contents of string
> 
> 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]]
> 
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