How to pick maximum value in group?

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ASHA PON 2022년 4월 19일
댓글: ASHA PON 2022년 4월 22일
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
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ASHA PON 2022년 4월 20일
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.

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채택된 답변

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.
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ASHA PON 2022년 4월 22일
Thank you so much for your reply. This is what exactly i needed.

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추가 답변(1개)

Walter Roberson 2022년 4월 20일
findgroups(a). Then splitapply(@max)
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ASHA PON 2022년 4월 22일

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