Minimum of unique values

I am trying to find the minimum of vector y=[ 1 2 4 3 9 7] which corresponds to vector x= [100 100 200 200 300 300] so that the result is z=[1 3 7]

what I need is the minimum of each unique x value.

Answer 1

[Stephen23]

You can use unique and accumarray:

>> x = [100 100 200 200 300 300];
>> y = [ 1 2 4 3 9 7];
>> [~,~,ic] = unique(x,'stable');
>> z = accumarray(ic(:),y,[],@min)
z =
   1
   3
   7

Answer 2

[Andrei Bobrov]

[~,~,c] = unique(x);
z = accumarray(c(:),y(:),[],@min);

Answer 3

[Blotter678]

that worked great, Thanks guys!