[R] How to retrieve value form dataframe by Key?

[Rui Barradas]

Hello,

Try

?subset
subset(dtfr, Col1 == "xxx")
?"["
dtfr[Col1 == "xxy", ]

Hope this helps,

Rui Barradas

Em 24-05-2012 11:00, Manish Gupta <mandecent.gupta at gmail.com> escreveu:
> Date: Thu, 24 May 2012 01:09:58 -0700 (PDT)
> From: Manish Gupta<mandecent.gupta at gmail.com>
> To:r-help at r-project.org
> Subject: [R] How to retrieve value form dataframe by Key?
> Message-ID:<1337846998835-4631173.post at n4.nabble.com>
> Content-Type: text/plain; charset=us-ascii
>
> Hi,
>
> I have one datagrame
>
> Col1      Col2        Col3
> Col3
> xxx         er            This is third record of 1st line.
> This is 4th record of first line.
> xxy         er            This is third record of 1st line.
> This is 4th record of second line
> xyx         er            This is third record of 1st line.
> This is 4th record of third line
>
> I want to get records corresponding to key (here Col1). How can i implement
> it?
>
> e.g.
> if i key in xxx i should get
> xxx         er            This is third record of 1st line.
> This is 4th record of first line.
>
> if i key in xxy i should get
> xxy         er            This is third record of 1st line.
> This is 4th record of second line
>
> Regards
>
>
> --
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