R help - Mar 2010 - Subset using partial values

Hi everyone,

I would like to subset a data.frame using partial values.

For example I have the following data.frame:

PROCHI  Main_condition
1234      411
1235     4110
1236     4111
1237     I20
1238    I201
1239    I202

Now let's say that I use the Subset function.  Ordinarily I would use it as
follows  Subset(x,
Main_condition=="411"|Main_condition=="4110" etc to get
all the 411s.

Is there a way that you can subset by only using part of the term that you
wish to subset by? 

Thanks,
Natalie
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Try this:

subset(x, grepl('411', Main_condition))

On Wed, Mar 3, 2010 at 11:33 AM, Newbie19_02 <nvanzuydam at gmail.com>
wrote:
>
> Hi everyone,
>
> I would like to subset a data.frame using partial values.
>
> For example I have the following data.frame:
>
> PROCHI ?Main_condition
> 1234 ? ? ?411
> 1235 ? ? 4110
> 1236 ? ? 4111
> 1237 ? ? I20
> 1238 ? ?I201
> 1239 ? ?I202
>
> Now let's say that I use the Subset function. ?Ordinarily I would use
it as
> follows ?Subset(x,
Main_condition=="411"|Main_condition=="4110" etc to get
> all the 411s.
>
> Is there a way that you can subset by only using part of the term that you
> wish to subset by?
>
> Thanks,
> Natalie
> --
> View this message in context:
http://n4.nabble.com/Subset-using-partial-values-tp1576614p1576614.html
> Sent from the R help mailing list archive at Nabble.com.
>
> ______________________________________________
> R-help at 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.
>


-- 
Henrique Dallazuanna
Curitiba-Paran?-Brasil
25? 25' 40" S 49? 16' 22" O