Interval where values are greater than treshold

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Lucas Russi
Lucas Russi 2019-12-10
评论： Lucas Russi 2019-12-10
Hi everyone
Logic = Data > Treshold
I now need to know what the intervals are where the treshold is exceeded
Logic = [1 1 1 0 0 0 1 1 0 1]
Desired_Output = [1 3;7 8;10 10]
So - from 1 to 3, from 7 to 8 aswell as 10
I can't think of a good way to do this.
Thank in advance

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采纳的回答

Stephen23
Stephen23 2019-12-10
>> B = find([true;diff(Logic(:))>0]);
>> E = find([diff(Logic(:))<0;true]);
>> M = [B,E]
M =
1 3
7 8
10 10

更多回答（1 个）

Jeremy
Jeremy 2019-12-10
I believe you are looking for the find command.
find(Logic)
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Jeremy
Jeremy 2019-12-10
You could use
diff
to determine adjacent numbers and drop the intermediate numbers appropriately
Lucas Russi
Lucas Russi 2019-12-10
Thanks for participating :)
idx = find(Logic)
idx(end+1) = 0
idx(diff(idx) ~= 1)
would be the indices that mark the end of the interval - but what about the start ?

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