MATLAB: Minimum value array issue

arrayindexminimum

I am using the following code line to get the minimum value of the matrix dn and the corresponding index of the minimum value

    [TransmiterNode,ind]=min(dn(:));

what I want to do is on the next run of this code line I do not want the old minimum value to be considered

Best Answer

If you know that all the values in dn are different:

 %init

 ind = [];
 %for ...

   dntemp = dn;
   dntemp(ind) = [];
   [TransmiterNode,ind]=min(dntemp(:));
   %...

 %end

If not:

%init
%TransmiterNode = NaN; %or any other unused value in dn 
%for ...
 dntemp = dn;
 dntemp(find(TransmiterNode)) = [];
 [TransmiterNode,ind]=min(dntemp(:));
 %...
%end

Related Solutions

MATLAB: How to find maximum before a certain element in the matrix

B=[5 8 5 2 6 9 10] ; 
[~,ind] = min(B); 
maxB4min = max(B(1:ind))
   =8

MATLAB: Finding the position of the minimum element in the matrix

You really should use find() rather than min() since find() will find them all and min() only finds the first occurrence, which is important since the min could occur at multiple locations:

M = [1 5 7; 2 4 5; 4, 1, 5]
minValue = min(M(:));
% Find all (row, column) pairs where M = the min value.
[rows, columns] = find(M == minValue)
% Print them out:
for k = 1 : length(rows)
	fprintf('M equals the min value of %f at row = %d, column = %d.\n', ...
		minValue, rows(k), columns(k));
end

You'll see

M =

1 5 7

2 4 5

4 1 5

rows =

columns =

M equals the min value of 1.000000 at row = 1, column = 1.

M equals the min value of 1.000000 at row = 3, column = 2.

Best Answer

Related Solutions

MATLAB: How to find maximum before a certain element in the matrix

MATLAB: Finding the position of the minimum element in the matrix

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