Not an exact answer to your question. You may use a: for amending column,
(1 4 6 3 2) (<a:;1)} tst
2 1 2
2 4 2
2 6 2
2 3 2
2 2 2
(1 4 6 3 2) ((<a:;0),(<a:;2))} tst
1 2 1
4 2 4
6 2 6
3 2 3
2 2 2
Sherlock, Ric wrote:
When using x m}"1 y to amend columns of y.
Why can m only be a single-item list (rank 1) and why does x need to be
rank 2?
e.g.
]tst=:(5 3$2)
2 2 2
2 2 2
2 2 2
2 2 2
2 2 2
(1 4 6 3 2) (1)}"1 tst
|rank error
| (1 4 6 3 2) (1)}"1 tst
(1 4 6 3 2) (,1)}"1 tst
|length error
| (1 4 6 3 2) (,1)}"1 tst
(,.1 4 6 3 2) (,1)}"1 tst
2 1 2
2 4 2
2 6 2
2 3 2
2 2 2
(,.1 4 6 3 2) (0 2)}"1 tst
|length error
| (,.1 4 6 3 2) (0 2)}"1 tst
Yet the following are fine?
|: (1 4 6 3 2) (1)} |: tst
2 1 2
2 4 2
2 6 2
2 3 2
2 2 2
|: (1 4 6 3 2) (0 2)} |: tst
1 2 1
4 2 4
6 2 6
3 2 3
2 2 2
I suspect this has to do with making sure the prefixes of the left &
frames right frames match. Am I on the right track?
Is working with the transpose the best way to accomplish something like
this?
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regards,
bill
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