Re: [R] how to select out some columns using cbind()

From: jim holtman <jholtman_at_gmail.com>
Date: Sat, 14 Jun 2008 19:35:46 -0400

newdata1 <- data1[, seq(from=2, to=ncol(data1), by=7)]

On Sat, Jun 14, 2008 at 7:27 PM, ss <affysnp_at_gmail.com> wrote:
> Hello! I have a matrix:
>
>> dim(data1)
> [1] 34176 581
>
> of 34176 rows and 581 columns,
>
> I want to make a new matrix data2 by taking the 2nd column, 9th column, 16th
> column....
>
> the column number is in the order of:
>
> 2
> 9 (2+7)
> 16 (9+7)
> 23 (16+7)
> ...
>
> the new matrix data2 should include 83 columns, is there an easy way to
> do that using cbind() function?
>
> Thanks a lot!
>
> Allen
>
> [[alternative HTML version deleted]]
>
> ______________________________________________
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>

-- 
Jim Holtman
Cincinnati, OH
+1 513 646 9390

What is the problem you are trying to solve?

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Received on Sat 14 Jun 2008 - 23:37:50 GMT

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