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Find Unique values in array

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Ali Tawfik
Ali Tawfik 2020-5-12
评论： Ameer Hamza 2020-5-13
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)

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Ameer Hamza
Ameer Hamza 2020-5-12
编辑：Ameer Hamza 2020-5-13
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
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Ali Tawfik
Ali Tawfik 2020-5-13
Hi,
Thanks for your prompt reply.
I understand, but I am looking for ONLY for index 1 and 4
So I wanna my output to be
z(:,:,1) = [10;20];
z(:,:,4)=[100;200]; which should be z(:,:,2)
Ameer Hamza
Ameer Hamza 2020-5-13
Try try something like this
idx = [1 4];
for i=1:numel(idx)
z(:,:,i)=A(:,:,idx(i))
end

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