MATLAB: Find Unique values in array

Question

Hi all,

I am trying to create a new array contains ONLY the unique values (same values but not repeated) which in the following case are 90 0 45

I used unique function, however, the function also returns the same data as in x, but in sorted order. I DO NOT want them in sorted order,

Also, I would like to obtain the index of the unique values in the x

like index=[1,2,9]

clear all;
clc;
x=[90 0 0 90 90 90 90 90 45 0 0 0]; 
y=unique(x)

Answer 1

clc;
x=[90 0 0 90 90 90 90 90 45 0 0 0]; 
[y, idx] = unique(x, 'stable')

output

y =
    90     0    45
idx =
     1
     2
     9