Message-ID: <941871A13165C2418EC144ACB212BDB0BEB358@dshsmxoly1504g.dshs.wa.lcl>
Date: 2009-04-02T21:35:53Z
From: Nordlund, Dan (DSHS/RDA)
Subject: Deleting rows based on identity variable
In-Reply-To: <429271.94239.qm@web111116.mail.gq1.yahoo.com>
> -----Original Message-----
> From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-project.org] On
> Behalf Of gina patel
> Sent: Thursday, April 02, 2009 2:17 PM
> To: Brian Lee Yung (Portfolio Analytics)Rowe; hadley wickham
> Cc: R-help at r-project.org
> Subject: Re: [R] Deleting rows based on identity variable
>
> I have another question, if I now want to remove multiple id's e.g. id=1 or 4 is there
> a simple OR command I can use?
>
> I tried? d2<-(d1[id != 1 | 4, ])
>
> however this does not delete anything
>
> PS? d2<-(d1[id != 4, ]) worked to remove id=4
>
> Thanks
>
> Gina
>
> --- On Thu, 4/2/09, hadley wickham <h.wickham at gmail.com> wrote:
>
> From: hadley wickham <h.wickham at gmail.com>
> Subject: Re: [R] Deleting rows based on identity variable
> To: "Rowe, Brian Lee Yung (Portfolio Analytics)" <B_Rowe at ml.com>
> Cc: "gina patel" <ginapatel1981 at yahoo.com>, R-help at r-project.org
> Date: Thursday, April 2, 2009, 4:48 PM
>
> On Thu, Apr 2, 2009 at 3:37 PM, Rowe, Brian Lee Yung (Portfolio
> Analytics) <B_Rowe at ml.com> wrote:
> > Is this what you want:
> >> d1[which(id != 4),]
>
> Or just
>
> d1[id != 4, ]
>
> Hadley
>
> --
> http://had.co.nz/
>
The problem is rules of precedence for evaluation. Try
d2<-d1[!(id %in% c(1,4)), ]
Hope this is helpful,
Dan
Daniel J. Nordlund
Washington State Department of Social and Health Services
Planning, Performance, and Accountability
Research and Data Analysis Division
Olympia, WA 98504-5204