randomly select a number from a matrix

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Camilla Santicoli
Camilla Santicoli am 19 Mai 2015
Bearbeitet: Andrei Bobrov am 19 Mai 2015
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

Akzeptierte Antwort

Torsten
Torsten am 19 Mai 2015
indexarray=randi(27,365,1);
For k=1:365
Vector(k)=Matrix(k,indexarray(k,1));
end
Best wishes
Torsten.

Weitere Antworten (1)

Andrei Bobrov
Andrei Bobrov am 19 Mai 2015
Bearbeitet: Andrei Bobrov am 19 Mai 2015
n = size(Matrix);
out = Matrix(sub2ind(n,(1:n(1))',randi(n(2),n(1),1)));

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