Generate a loop vector with certain probability?

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pauldjn 2018-9-26

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https://ww2.mathworks.cn/matlabcentral/answers/420929-generate-a-loop-vector-with-certain-probability

编辑： pauldjn 2018-9-26

Hi, I have this loop to generate a matrix of size d with the numbers 1,2,3,4 according to a certain frequency (fn...) and each time one of the elements of the matrix is generated the frequency is recalculated but only after all the numbers generated in each g{x} has been completed. So actually the recalculated frequency is not completely accurate, can be a different way to calculate it not for the whole set but after each number is generated?

d= poissrnd(lambda,1,1000);
for x = 1:numel(d)
tot= q1 + q2 + q3 + q4
f1= q1 / tot
f2= q1 / tot
f3= q1 / tot
f4= q1 / tot
g{x} = randsrc(1,d(x),[1,2,3,4;f1,f2,f3,f4]);
f1 = f1 - (sum(d{x}==1));
f2 = f2 - (sum(d{x}==2));
f3 = f3 - (sum(d{x}==3));
f4 = f4 - (sum(d{x}==4));
end