Have one array follow another array with a threshhold

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Axel O
Axel O 2023-3-24
评论： Axel O 2023-3-24
Hi there! I've got two arrays and I want to put a threshhold on one of them and have the other array follow it (see example down below). After the threshhold is done, I'd like my array A1 follow the new A2, meaning that the first 3 values of A1 should be removed.
Any tips on how to do this?
A1 = [1 4 5 8 2 2 4];
A2 = [2 5 8 15 18 24 23]
A2Thresh = A2 < 10 | A2 > 30;
A2(A2Thresh) = [ ]

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Dyuman Joshi
Dyuman Joshi 2023-3-24
编辑：Dyuman Joshi 2023-3-24
Ran in:
Use the same approach for A1 as well.
A1 = [1 4 5 8 2 2 4];
A2 = [2 5 8 15 18 24 23];
A2Thresh = A2 < 10 | A2 > 30;
A2(A2Thresh) = []
A2 = 1×4
15 18 24 23
A1(A2Thresh) = []
A1 = 1×4
8 2 2 4
Edit - This works only if both A1 and A2 have same size
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Dyuman Joshi
Dyuman Joshi 2023-3-24
编辑：Dyuman Joshi 2023-3-24
When you perform this operation
FLWAll(FLWTHRESH) = [];
The number of elements of FLWALL are reduced, and you can not delete the indices who are greater are the number of elements of FLWALL, which the logical vector VTHRESH might contain.
Thus the error "Matrix index is out of range for deletion".
To resolve the issue, combine the both the conditions together and perform the deletion -
VTHRESH = VAll < 18.69;
VAll(VTHRESH) = [];
FLWTHRESH = FLWAll < 0.10 | FLWAll > 0.30;
FLWAll(FLWTHRESH | VTHRESH) = [];
Axel O
Axel O 2023-3-24
That did the trick! Thank you for all of your help, really appreciate it! I'll look into it more this weekend so I can avoid these issues in the future

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