Hello everyone,
I'm stuck with a problem, which (I think) should be really easy to solve
in J, but I somehow am not able to do it. This is what I want to do:
Let's assume I have two arrays:
arr1 =: 1 2 3
arr2 =: 4 5 6
Now I do imagine some kind of "template" for a matrix which looks like
this:
X 0
0 Y
What I want to do now is to construct a rank-3 array (shape 3 2 2), in
which in each consecutive plane X has been replaced by one element of
arr1 and Y has been replaced with one element of arr2. The final array
should therefore be:
finalarr =: 3 2 2 $ 1 0 0 4 2 0 0 5 3 0 0 6
I'm looking for a sentence/function, that constructs an array of shape n
2 2 (in the example given above) where n equals # arr1 (we can assume
that (# arr1) = # arr2). As I said - I've got the feeling that this
should be not too hard to do in J, but somehow I'm stuck.
Thank you very much for your help!
Regards,
Thomas
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