[18770] in s-news-athena
[S] Vector generation
daemon@ATHENA.MIT.EDU (Ian Clough)
Wed Jul 28 12:30:03 1999
Message-Id: <01BED8F4.25306120@t20-24.ra.uc.edu>
From: Ian Clough <cloughi@email.uc.edu>
To: "'s-news@wubios.wustl.edu'" <s-news@wubios.wustl.edu>
Date: Wed, 28 Jul 1999 12:23:28 -0400
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I use S-Plus 2000 in a Windows NT environment. I am interested in efficiently generating a sequence of vectors from a given matrix.
Specifically given, for example, the matrix
1 2 3 4 5 6 7
2 3 4 5 6 7 8
3 4 5 6 7 8 9
I wish to efficiently generate the sequence of column vectors
1 1 1 1 1 1 1 1 1 1 1 2 2 6 7
2 2 2 ... 2 3 3 3 ... 3 4 ... 4 ... 8 3 3 .. etc .. up to 8 8
3 4 5 9 4 5 6 9 5 9 9 4 5 9 9
Any ideas would be much appreciated,
Ian (cloughi@email.uc.edu)
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