Re: [R] conditional matching of rows of tables

From: jim holtman <jholtman_at_gmail.com>
Date: Thu, 20 Mar 2008 11:33:07 -0500

Not exactly clear on the transformation that you want to do. In your example, '1 2 3 -> a', where does the '2 3' come from since I don't see a value of 2 in the 3rd & 4th columns. So a better explanation of what you are trying to do would be help and show where the values came from in each case.

On 3/20/08, Ng Stanley <stanleyngkl_at_gmail.com> wrote:
> Hi,
>
> Given matrix A of 4 cols.
>
> 1 a 0 4
> 1 b 5 8
> 2 a 0 3
> 2 b 4 7
>
> I have another matrix B of 3 cols. How to assign (a or b) to the rows such
> that in each row its 1st value must match the 1st col. of A, 2nd and 3rd
> values must lie between 3rd and 4rd cols (inclusive) of A
>
> 1 2 3 -> a
> 2 4 5 -> b
> 2 0 3 -> a
> 1 7 8 -> b
>
> [[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 Thu 20 Mar 2008 - 16:42:36 GMT

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