Hello colleagues, I have a little question. I want to build a matrix in Julia 7.0, where is a concatenation of several vectors of same length. I use the code: A = rand(10,10) B = %a empty matrix for i=1:2:10 B = [B;A[i,:]] %B is the matrix whose line i is from A, where i is odd end In Julia …

Concatenating vectors

c42f March 25, 2019, 5:01am 6

A bit OT, but it’s an empty check box (code “[ ]” interpreted as markdown):

[ ]
[x]

produces:

2 Likes

Topic		Replies	Views
An error from stacking a new array with an initialization array (empty) General Usage question	6	900	October 18, 2021
Can't concatenate a matrix to `Any[]` horizontally General Usage question , matrix	9	304	March 26, 2024
Add row to 2D array in a loop General Usage question , array , loops	2	1518	October 26, 2020
`vcat([], [1 2])` # OK. `vcat([], [1 "2"])` # Not OK General Usage question , syntax , cat	18	509	April 21, 2024
Initialize array to concatenate in a for loop New to Julia question , arrays	9	721	September 25, 2022