How can I vectorize for loop with randsample
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I like to know if there is a any simpler way of doing this (without for-loop):
A = zeros(4,3) %this size is just an example
for i=1 : 4 %I want to add 4 vectors ...
A(i,:) = randsample(7,3)' %... which are 3 different numb from [1-7]
end
A =
4 6 2
1 7 3
2 1 5
3 5 6
So my point is to create a matrix from different vectors, which I have created with randsample. Is there a way I can vectorize this?
Have been fighting with this many days :)
Yours Merit
采纳的回答
Walter Roberson
2012-10-13
编辑：Walter Roberson
2012-10-13
numvecs = 4;
popsize = 7;
numselected =3;
[junk, randidx] = sort(rand(numvecs, popsize), 2); %sort along row
A = randidx(:,1:numselected);
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