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maxjuliaindices

Julia: Find the indices of all maxima

In Julia you can use findmax or indmax to find the index of the biggest entry in a matrix. But if you have multiple entries with this maximum value, you get the index of the first one. How can I get the indices of all max value entries in a matrix?

Solution

  • If this is not a bottleneck

    A = [1, 2, 3, 3, 3]
A_max = maximum(A)
find(a->a==A_max, A)

    Will give you what you need, but it does go over the array twice.