HI,
Try this:
mat[!duplicated(mat[,1]),]
[,1] [,2]
[1,] 1 5
[2,] 2 1
[3,] 3 4
A.K.
- Original Message -
From: Zhongyi Yuan
To: r-help@r-project.org
Cc:
Sent: Thursday, July 26, 2012 12:50 AM
Subject: [R] Remove rows that have repeated items in a particular
r-help@r-project.org
Cc:
Sent: Thursday, July 26, 2012 12:50 AM
Subject: [R] Remove rows that have repeated items in a particular column
Dear R Users,
I apology for not being able to provide an adequately informative subject.
Let me describe my problem with an example.
For a matrix
* (mat &l
Worked like a charm. Thanks.
Zhongyi
On Wed, Jul 25, 2012 at 11:58 PM, MK wrote:
> Very simple
>
> mat[!duplicated(mat[, 1]), ]
>
> M
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Very simple
mat[!duplicated(mat[, 1]), ]
M
On 26/07/12 06:50, Zhongyi Yuan wrote:
Dear R Users,
I apology for not being able to provide an adequately informative subject.
Let me describe my problem with an example.
For a matrix
*(mat <- matrix(c(1,1,2,2,2,3,3, 5,9,1,3,7,4,8), ncol = 2))*
Dear R Users,
I apology for not being able to provide an adequately informative subject.
Let me describe my problem with an example.
For a matrix
*(mat <- matrix(c(1,1,2,2,2,3,3, 5,9,1,3,7,4,8), ncol = 2))*
my desired output is
*(desired <- matrix(c(1,2,3, 5,1,4), ncol = 2))*
That is, th
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