Question

I’m trying to understand a matlab code, but I’m not familiar with matlab much. Can someone please tell me what the meaning of x = [ x[i] ] is?

Thanks in advance.

Answer 1

Your expression really must be read as

x = [ x [i] ]

Focusing on the right side, you are making a joined matrix (i.e., joining columns) of x along with a 1×1 matrix given by i (which may be a matrix itself, obviously). Then you are assigning it to another variable, x in this case.

I must remind you that access to indices is made using round parentheses.