MATLAB: How to extract two equal maximum values at different index

different lndexMATLAB

Hi guys,

How can I point out the different location of two maximum values

example A = [8,5,6,7,8]

If i type [max_A, index] = max(A), it will give me max = 8 and index = 1, but in this case the index must be 1 and 5.

index=find(A==max(A))

This should give you the indexes.

One way:

A = [4 5 9 9];
maxval = max(A);
lia = ismember(A,maxval);
idx = find(lia);

or shorter

maxval = max(A);
idx = find(A == maxval);

It is always a good idea to read the doc for any such question:

doc max
docsearch('maximum value')

The two output call to the MAX function gives you what you need.

[maxval,index] = max([1 5 6 7 8 9 10 12 2 7 8 11 5])