Suppose I have an array of arrays, say a 2 x 2 matrix whose entries are 1 x 2 vectors, e.g., julia> A 2×2 Matrix{Matrix{Int64}}: [1 2] [3 4] [5 6] [7 8] I am wondering, without using for loops, how to extract a 2 x 2 matrix consisting of the 1st entries of this matrix of matrices, i.e., 2x2 M…

How to extract components in an array of arrays

baggepinnen April 15, 2022, 5:14am 2

You can broadcast getindex.(A,1) which gets index 1 for each element of the array.

4 Likes