how to inisialization number of cluster

in matrices (1,1) i have :

Val = [0; 0; 0,5]

thats mean i have 3 cluster value (cluster 1 = 0, cluster2 = 0, cluster 3 = 0.5)

so i use max(val) for take 0.5. but i want change 0.5 to 3 (number of cluster).

how to change it?

Answer 1

[Bhaskar R]

[~, I] = max(Val);    % index of max value
Val(I) = 3;