groupcounts and sum of data in another array in the same order

Question

yehuda kristo 2023-12-13

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https://ww2.mathworks.cn/matlabcentral/answers/2060239-groupcounts-and-sum-of-data-in-another-array-in-the-same-order

编辑： Dyuman Joshi 2023-12-13

I have a random signal sample and I have done cycle counting to extract the data that most influence calculation. The result of this cycle counting are 2 arrays, array A which consist of its range (2 x amplitude) and array B which consist of its occurrence (half cycle or full cycle). I want to do groupcounts that count the occurrence of ranges from array A and count the sum of its cycle from the result of the groupcounts.

Example:

A = [10, 11, 12, 10, 11, 12, 13, 11, 15, 10], B = [0.5, 1, 1, 0.5, 0.5, 0.5, 1, 1, 1, 0.5]

The goupcounts on array A will tell me how much do 10, 11, 12, 13, and 15 occured in array A. I want to count the sum of the cycle of each of this ranges (10, 11, 12, 13, and 15). How do I do that?

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Dyuman Joshi 2023-12-13

编辑：Dyuman Joshi 2023-12-13

在 MATLAB Online 中打开

Do you mean like this?

A = [10, 11, 12, 10, 11, 12, 13, 11, 15, 10];
B = [0.5, 1, 1, 0.5, 0.5, 0.5, 1, 1, 1, 0.5]
B = 1×10
    0.5000    1.0000    1.0000    0.5000    0.5000    0.5000    1.0000    1.0000    1.0000    0.5000
[I, K] = findgroups(A)
I = 1×10
     1     2     3     1     2     3     4     2     5     1
K = 1×5
    10    11    12    13    15
S1 = accumarray(I.', A.')
S1 = 5×1
    30
    33
    24
    13
    15
S2 = accumarray(I.', B.')
S2 = 5×1
    1.5000
    2.5000
    1.5000
    1.0000
    1.0000

Edit - Well, it seems I'm late to the party haha.

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Answer 1

Voss 2023-12-13

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/2060239-groupcounts-and-sum-of-data-in-another-array-in-the-same-order#answer_1370974

在 MATLAB Online 中打开

A = [10, 11, 12, 10, 11, 12, 13, 11, 15, 10], B = [0.5, 1, 1, 0.5, 0.5, 0.5, 1, 1, 1, 0.5]
A = 1×10
    10    11    12    10    11    12    13    11    15    10
B = 1×10
    0.5000    1.0000    1.0000    0.5000    0.5000    0.5000    1.0000    1.0000    1.0000    0.5000
[counts,vals] = groupcounts(A(:))
counts = 5×1
     3
     3
     2
     1
     1
vals = 5×1
    10
    11
    12
    13
    15
sums = groupsummary(B(:),A(:),'sum')
sums = 5×1
    1.5000
    2.5000
    1.5000
    1.0000
    1.0000