Split a vector into 2 vectors randomly

i have a vector of 4 columns and 150 rows named "samples". I want to put randomly the 120 rows in a new vector, and the remaining rows in a second new vector. I am new to matlab. can anyone help me? thanks in advance.

Answer 1

[Robert]

I think you will find the function randperm useful. You can use it to generate a random order for your 150 rows and then select the first 30 for your smaller set and the last 120 for the larger set (order not important).

For example

my_indices = randperm(150);
small_set = data(my_indices(1:30),:);
large_set = data(my_indices(31:end),:);

[Savvas Kontos]

thank you :)