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

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?

[Dyuman Joshi]

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.

Answer 1

[Voss]

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

Answer 2

[Matt J]

splitapply(@sum,B,findgroups(A))

Answer 3

[Matt J]

accumarray(findgroups(A(:)), B(:))