How to pick maximum value in group?

I have created groups with repeating value in a matrix and elements in the group are matched with matrix having its probability value. Now I have to find the maximum probability value in each group.

Example:

group n =

prob 1 prob 2 prob 3 maxprob prob 5

Expected output:

group n = repeated value

maxprob

[Adam Danz]

Could you provide an actual example?

It sounds like you're looking for the max function.

[ASHA PON]

a=[6 6 5 6 5 6 6]

b=[0.74 0.66 0.58 0.47 0.606 0.705 0.76]

group 1 = 5

0.58 0.606

group 2 = 6

0.74 0.66 0.47 0.705 0.76

Expected output

group 1 = 5

0.606

group 2 = 6

0.76

This is a smaller version of my problem. I need to apply this problem to a large number of group and n*m matrix. Thank you.

Answer 1

[Adam Danz]

data = [0.74  0.66  0.58  0.47  0.606  0.705  0.76];  
group = [6  6  5  6  5  6  6];


groupsummary(data(:),group(:),'max')

ans = 2×1

0.6060 0.7600

See groupsummary for details.

[ASHA PON]

Thank you so much for your reply. This is what exactly i needed.

Answer 2

[Walter Roberson]

findgroups(a). Then splitapply(@max)

[ASHA PON]

Thank you for your reply