Dale Black (Feb 25 2021 at 23:38): Dale Black (Feb 25 2021 at 23:38):Is there a way to create a new array of squared elements using the @tullio einsum functionality?
My first attempt was:
@tullio M[x, y, z] := A[x, y, z] * A[x, y, z]
But this doesn't seem to work like I thought it would
Dale Black (Feb 25 2021 at 23:40):I guess my question is can I do A .^ 2 using Tullio and einsum notation?
Mason Protter (Feb 25 2021 at 23:57):What did you expect for that to do? It's the same as A .^ 2 for me.
julia> A = collect(reshape(1:(2^3), 2, 2, 2))
2×2×2 Array{Int64, 3}:
[:, :, 1] =
1 3
2 4
[:, :, 2] =
5 7
6 8
julia> using Tullio
julia> @tullio M[x, y, z] := A[x, y, z] * A[x, y, z]
2×2×2 Array{Int64, 3}:
[:, :, 1] =
1 9
4 16
[:, :, 2] =
25 49
36 64
julia> M == A .^ 2
true
@tullio M[i,j,k] := A[i,j,k]^2 works just as well
Dale Black (Feb 26 2021 at 00:26):Hmm, I cannot recreate the error so I am not sure what I was doing wrong originally. Thank you both though, this works
Last updated: Oct 02 2023 at 04:34 UTC