how to do binning from two array?
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i have two array. one array contained floating values. DT = {2.23, 2.83, 3.00, 3.16, 3.60, 4.00, 4.12, 4.24, 4.47, 5.00, 5.09, 5.38, 5.83, 6.00}. Second array contains occurrence of these float values . Freq = {18, 83, 517, 195, 110, 89, 6, 3, 10, 15, 4, 3, 2, 1}. means 2.23 value occurred 18 times like this. Now, i want to do binning from these two array. i want to divide it in 50 bins. each bin groups like [0-2], [2-4], [4-6].... like this. and i have to get the summation of the occurrence of the float values fall in this range. means 2.23, 2.83,3.00, 3.16, 3.60, 4.00 these are fall in the range [2-4] so i need to sum its corresponding occurrence values and put it in a array. how to do it?? please give a suggestion
回答（1 个）
Jos (10584)
2017-12-12
Here is an easy solution:
DT = [2.23, 2.83, 3.00, 3.16, 3.60, 4.00, 4.12, 4.24, 4.47, 5.00, 5.09, 5.38, 5.83, 6.00]
Freq = [18, 83, 517, 195, 110, 89, 6, 3, 10, 15, 4, 3, 2, 1]
Bins = 0:2:10
[~, idx] = histc(DT, Bins)
MySums = accumarray(idx(:), Freq(:),[numel(Bins)-1 1])
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2017-12-12
2017-12-12
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