MATLAB: Are there any functions to randomly pick the minimum element from a vector if the vector has multiple minimum elements

MATLABmin

Function min() picks the first minimum element from a vector if the vector has multiple minimum elements.

I want to randomly pick the minimum element from all the minimum elements and get its value and index.

Could you tell me if there is a function to do that?

Best Answer

No, there is no function provided for that. You can write such a function, though. The difficulty of doing it will depend upon whether you are working with a vector or something that is at least 2D (in which case it has to process per row or per column)

Related Solutions

MATLAB: First 5 minimum elements of a vector

vector=rand(10,1)
[x,idx]=sort(vector)
out_x=x(1:5)         % 5 first values
out_idx=idx(1:5)     % corresponding indices

MATLAB: Find min in matrix given specific rows and columns

One approach:

idx = sub2ind(size(A), r', c');                                     % Define ‘Eligible’ Elements As Linear Index Vector
[minval,minidx] = min(A(:));                                        % Minimum & Location (Linear Index)
[rmin,cmin] = ind2sub(size(A),intersect(minidx,idx));               % Recover Row, Column Indices Of ‘Eligible’ Minimum
fprintf('\nMinimum of A = %d, at [%2d,%2d]\n', minval, rmin, cmin)
Minimum of A = 1, at [ 1, 1]

Best Answer

Related Solutions

MATLAB: First 5 minimum elements of a vector

MATLAB: Find min in matrix given specific rows and columns

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