I don't know the answer to you question. Maybe this will be helpful. You
can rename so you will find the names to be useful.
]A=:i.2 3
0 1 2
3 4 5
]B=:i.3 3
0 1 2
3 4 5
6 7 8
f=: 13 :'|:|.y'
f A
3 0
4 1
5 2
f B
6 3 0
7 4 1
8 5 2
f f B
8 7 6
5 4 3
2 1 0
f f f B
2 5 8
1 4 7
0 3 6
f^:4 B
0 1 2
3 4 5
6 7 8
Linda
-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Francesco
Pedulla'
Sent: Tuesday, April 22, 2014 11:21 AM
To: [email protected]
Subject: [Jprogramming] Bug or feature in Power conjunction?
Hello everybody,
I am using J801 under Ubuntu. Here is a behaviour I do not understand:
mat=:i.2 3
r90=:|."1@:|:"2
r90^:0 mat
0 1 2
3 4 5
r90^:1 mat
3 0
4 1
5 2
r90^:2 mat
5 4 3
2 1 0
So far, so good. But:
r90^:(i.3) mat
0 1 2
3 4 5
0 0 0
3 0 0
4 1 0
5 2 0
5 4 3
2 1 0
0 0 0
Why the additional row of zeros?
Thanks for any hint,
Francesco
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