randomly select a number from a matrix

2015 5 19
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更新时间：2015 5 19
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Hi all. I have a 365x27 matrix of values where the rows are the different days of a year (365) and the columns the number of years that I am considering (27). What I would like to do is to create a vector 365x1 where every day one value is randomly selected from the initial matrix. So, for the first day the function should randomly select a value out of the first row of the inital matrix, for the second day a value randomly taken from the second row of the inital matrix and so on. Does someone know how to do it? Thanks

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Torsten
Torsten 2015-5-19

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indexarray=randi(27,365,1);
For k=1:365
Vector(k)=Matrix(k,indexarray(k,1));
end
Best wishes
Torsten.

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Andrei Bobrov
Andrei Bobrov 2015-5-19
编辑：Andrei Bobrov 2015-5-19

0 个投票

n = size(Matrix);
out = Matrix(sub2ind(n,(1:n(1))',randi(n(2),n(1),1)));

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