Delete numbers that are not in both arrays
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I have four arrays. I want to delete all the numbers that are not in all of the four arrays.
So for example:
A1 = [1 2 3 4 5]
A2 = [2 3 4 6 7]
A3 = [1 2 3 4 6]
A4 = [2 3 4 5 6]
I want to do the following automatically:
A1([1 5]) = [] --> A1 = [2 3 4]
A2([4 5]) = [] --> A2 = [2 3 4]
A3([1 5]) = [] --> A3 = [2 3 4]
A4([4 5]) = [] --> A4 = [2 3 4]
So I want to find the indices to delete the columns that I don't want.
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Antworten (1)
Steven Lord
am 18 Mai 2021
Use the intersect function a couple times. That will be easier if you define an array or a cell array of data rather than using numbered variable names.
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