How to set multiple arrays from a single array?

General Usage
,
1

Is there any way to directly define new array from a known larger array? For example:

a1,a2=[1 2;3 4]
2×2 Matrix{Int64}:
 1  2
 3  4
a1
1
a2
2

This doesn’t give results I need. However, if I set array from a vector of vector, it succeeds:

b1,b2=[[1 2],[3 4]]
2-element Vector{Matrix{Int64}}:
 [1 2]
 [3 4]
b1
1×2 Matrix{Int64}:
 1  2
b2
1×2 Matrix{Int64}:
 3  4

Therefore, is there any method to define array directly from a regular array (matrix, tensor), not nested array?

2

Looking to capture entire rows or columns?

a1, a2 = eachrow([1 2; 3 4])
2 Likes
3

I think it’s no different to change into nested vectors and set variables.

4

But be wary that eachrow returns views to original matrix, that is makes references to the original matrix. If you want new vectors you may just project them by Vector.

2 Likes
5

What’s the meaning of project? Do you mean map or some other functions?

6

You could just collect each view to make copies.

1 Like
7

I understand. Thx for your reply. I think your suggestion is also transfer matrix into vector of vector then set.