Pick 5 Unique Random Numbers
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I am still trying to learn MATLAB. It would be helpful if I get some knowledge from this problem. So here is a simpler version of my problem. ( I wish to learn from this and use it in my actual problem)
I have Matrix defined by:
A=zeros(10,10);
for i=1:10
for j=1:10
A(j,i)=i*100+j;
end
end
I wish to pick 5 Random but Unique terms in the Matrix A, do some operation (for example: addition of all 5 terms) and from the result, I will make a column Matrix B by populating each row with one result from addition of 5 random unique terms in A, till I run out of all terms in A.
I know how to perform operations on the 5 terms from A and to populate B but I don't know how to get the 5 Random Unique terms from A. Can someone please help me with this.
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James Tursa
2018-2-2
编辑：James Tursa
2018-2-2
A = your matrix
n = number of elements of A to pick at a time (must be exactly divisible in numel(A))
x = reshape(randperm(numel(A)),n,[]); % Create some random non-repeating indexing
for k=1:size(x,2)
% The elements of A to use for this iteration are A(x(:,k))
end
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