How to categorize month/day/year into a period of months

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Aj Jebelli
Aj Jebelli 2021-6-18
评论： SALAH ALRABEEI 2021-6-18
I have data that looks like this:
Value Date
1 1/10/2018
2 1/14/2018
3 1/21/2018
4 2/22/2018
. .
. .
. .
16 4/21/2020
I want to categorize the days in Jan-2018 for example to be labeled "1', Feb-2018 would be labeled "2" etc. I am hoping my data would look like this:
Value Month
1 1
2 1
3 1
4 2

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回答（1 个）

SALAH ALRABEEI
SALAH ALRABEEI 2021-6-18
Assuming your date array is called A. This might work
Achar = char(A);
lab = A(:,1);

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