From: Stanley Ng <stanleyngkl_at_gmail.com>

Date: Fri, 21 Mar 2008 08:00:08 +0800

Date: Fri, 21 Mar 2008 08:00:08 +0800

I have matrix A of 4 cols:

1 a 0 4

1 b 5 8

2 a 0 3

2 b 4 7

And matrix B of 3 cols:

1 2 3

2 4 5

2 0 3

1 7 8

2 4 5 -> "b" 2 0 3 -> "a" 1 7 8 -> "b"

-----Original Message-----

From: jim holtman [mailto:jholtman_at_gmail.com]
Sent: Friday, March 21, 2008 00:33

To: Ng Stanley

Cc: r-help

Subject: Re: [R] conditional matching of rows of tables

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]]
**>
**> ______________________________________________
**> R-help_at_r-project.org mailing list
**> https://stat.ethz.ch/mailman/listinfo/r-help
**> PLEASE do read the posting guide
**> http://www.R-project.org/posting-guide.html
**> and provide commented, minimal, self-contained, reproducible code.
**>
*

-- Jim Holtman Cincinnati, OH +1 513 646 9390 What is the problem you are trying to solve? ______________________________________________ R-help_at_r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.Received on Fri 21 Mar 2008 - 00:16:32 GMT

Archive maintained by Robert King, hosted by
the discipline of
statistics at the
University of Newcastle,
Australia.

Archive generated by hypermail 2.2.0, at Fri 21 Mar 2008 - 02:30:23 GMT.

*
Mailing list information is available at https://stat.ethz.ch/mailman/listinfo/r-help.
Please read the posting
guide before posting to the list.
*