Thank you for the suggestions, but my intent may have ben unclear, it was:
Insert the first row of b as third column of first matrix of a
Insert the second row of b as third column of the second matrix of a
My simplification produced an index error, whereas the proposed form leads
to un intended results.
*The proposed forms:*
c ($@] $ [ b} ,@]) a
2 7 12 17 22
27 6 7 8 9
10 11 12 13 14
15 16 17 18 19
20 21 22 23 24
25 26 27 28 29
More readable second form:
($a) $ b c} ,a
0 1 2 3 4
5 6 7 8 9
10 11 12 13 14
15 16 17 18 19
20 21 22 23 24
25 26 27 28 29
*Intended results*:
b(2&{"1@])}a
0 1 0 3 4
5 6 1 8 9
10 11 2 13 14
15 16 3 18 19
20 21 4 23 24
25 26 5 28 29
I can get what I need, but sometimes making the code more readable can lead
to unintended results. It seems that finding out what went wrong may not
always worth the effort.
In any event, I will read the definitions again, and your references more
carefully.
Thanks again.
Sent from my iPad
On 2012-05-18, at 22:02, Raul Miller <rauldmil...@gmail.com> wrote:
First, I think this is the expression you are looking for:
c ($@] $ [ b} ,@]) a
Or, if you prefer:
($a) $ c b} ,a
My guess as to the reason for this is the examples on the two pages
that define item amend.
http://www.jsoftware.com/help/dictionary/d530n.htm
http://www.jsoftware.com/help/dictionary/d530v.htm
And my guess for the cause of the difference is editing drift --
probably one was updated to a new concept where the other was not.
I hope this helps,
--
Raul
On Fri, May 18, 2012 at 7:30 PM, Robert Cyr <robert....@gmail.com> wrote:
Inserting a 2 column array in a specified column of a rank 3 array.
*Given*:
a=.i.2 3 5
b=.i.2 3
]c=.2{"1 a
2 7 12
17 22 27
*This one is fine:*
b(2&{"1@])}a
0 1 0 3 4
5 6 1 8 9
10 11 2 13 14
15 16 3 18 19
20 21 4 23 24
25 26 5 28 29
*But not this quite similar one*:
b c }a
|index error
| b c}a
*Why?*
Sent from my iPad
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