How to split data set into multiple bins and perform condition statement on bins

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Keaton Looper 2022-3-24

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https://ww2.mathworks.cn/matlabcentral/answers/1680014-how-to-split-data-set-into-multiple-bins-and-perform-condition-statement-on-bins

编辑： Matt J 2022-3-25

I have a logical data set and I am trying to divide it into 31 bins but my data points are not evenly distributing and I need it to be divided into 31 bins so that I can then run an if statement that counts the total number of ones in each bin and compares it to a condition.

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Matt J 2022-3-24

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https://ww2.mathworks.cn/matlabcentral/answers/1680014-how-to-split-data-set-into-multiple-bins-and-perform-condition-statement-on-bins#answer_926289

编辑：Matt J 2022-3-24

Use the discretize() command.

https://www.mathworks.com/help/matlab/ref/double.discretize.html

to assign bin labels to each of your data points.

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Keaton Looper 2022-3-25

With my example I want the data to be distributed into 3 subsets of data. I then want it to count the total amount of ones in the set and if it is great than 1 count that event as a one and then take the total count of events. So my example should give me a count of 3.

Matt J 2022-3-25

编辑：Matt J 2022-3-25

在 MATLAB Online 中打开

So my example should give me a count of 3.

No, that would depnd on how the data is split into subsets. Even without randomization, a subset may contain no ones, like in the following, where the subsets are sequential.

Data = [0 0 0 1 0 1 1 0 1 1 1 0];
binLabels=[1 1 1 2 2 2 2 3 3 3 3 3];
numOnes=accumarray(binLabels',Data')
numOnes = 3×1
     0
     3
     3
overallCount = sum(numOnes>=1)
overallCount = 2

Once again, because you haven't specified the details of the processing with enough care and detail, we get a result you don't expect. Perhaps you meant for the subsets to be interleaved. That does give your expected result:

binLabels=[1 2 3 1 2 3 1 2 3 1 2 3];
numOnes=accumarray(binLabels',Data')
numOnes = 3×1
     3
     1
     2
overallCount = sum(numOnes>=1)
overallCount = 3