[R] Deleting rows based on identity variable

[Rowe, Brian Lee Yung (Portfolio Analytics)]

Is this what you want:
> d1[which(id != 4),]
      id x    y
 [1,]  1 1 0.00
 [2,]  1 2 0.10
 [3,]  1 3 0.50
 [4,]  1 4 0.40
 [5,]  1 5 0.20
 [6,]  2 1 0.00
 [7,]  2 2 0.10
 [8,]  2 3 0.50
 [9,]  2 4 0.40
[10,]  2 5 0.12
[11,]  3 1 0.00
[12,]  3 2 0.10
[13,]  3 3 0.50
[14,]  3 4 0.55
[15,]  3 5 0.20
[16,]  5 1 0.00
[17,]  5 2 0.10
[18,]  5 3 0.60
[19,]  5 4 0.40
[20,]  5 5 0.10

-----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 4:30 PM
To: R-help at r-project.org
Subject: [R] Deleting rows based on identity variable


I have created this data frame to help illustrate my problem.

id<-c(rep(1,5),rep(2,5),rep(3,5),rep(4,5),rep(5,5))
x<-rep((seq(1:5)),5)
y<-c(0, 0.1, 0.5, 0.4, 0.2, 0, 0.1, 0.5, 0.4, 0.12, 0, 0.1, 0.5, 0.55, 0.2, 0, 0.1, 0.5, 0.3, 0.2, 0, 0.1, 0.6, 0.4, 0.1)
d1<-cbind(id,x,y)

I would like to delete all rows where id=4, however, when I tried the command

 d2=d1[-c(id==4),]

and looked at d2 no data was removed.

Thanks in advance, I appreciate any help.




      
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