Hi Pavlos,
I'm not sure what the purpose would be of reducing the number of zeros, but here's one way to do it by removing one randomly selected third of all zeros:
% First, define the vector:
A=[1.140,0.590,0.140,0,0,0,0,0,0,0,0,0,0,0,0,1,3,5];
% then search for the locations where the vector has zeros:
vecZeroLocations=find(A==0);
% count how many zeros there are:
intNumZeros=numel(vecZeroLocations);
% select one third of zeros to remove:
vecRemoveZeros = randperm(intNumZeros,round(intNumZeros/3));
% now we have to get the locations in the original vector of those zeros:
vecRemoveLocations = vecZeroLocations(vecRemoveZeros);
% and finally, we can remove those zeros from the vector:
A(vecRemoveLocations)=[];
I hope this answers your questions?
Best, Jorrit
