Check for identical maximum values in an array
显示 更早的评论
Hi guys, I have a matrix, A = [2 4 1;8 3 2;8 8 6;4 5 3] As seen, the above matrix has more than one maximum values. How do i write an if statement testing for multiple maximum values? That is: if (code) % if more than one maximum value exists; ...; % do ... end
采纳的回答
Walter Roberson
2017-9-6
"if more than one maximum value exists in the array pick the first max value and display it's index"
idx = find( A(:) == max(A(:)) );
if length(idx) > 1
disp(idx(1))
end
更多回答（3 个）
Star Strider
2017-9-6
Probably the easiest way is to do logical indexing and count the number of non-zero elements to get the number of maximum values:
A = [2 4 1;8 3 2;8 8 6;4 5 3];
nr_maxvals = nnz(A == max(A(:)));
nr_maxvals =
3
3 个评论
Jane Ak
2017-9-6
Walter Roberson
2017-9-6
if nnz(A == max(A(:))) > 1
...
end
Star Strider
2017-9-6
@Walter — Thank you.
Number of maximum values:
numMax=sum(A(:) == max(A(:)));
if numMax > 1
%Do your thing
end
2 个评论
Stephen23
2017-9-6
@Jane Ak: Star Strider already explained that in their answer from three hours ago.
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