Interval where values are greater than treshold

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

Answer 1

[Stephen23]

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

[Lucas Russi]

gracias <3

Answer 2

[Jeremy]

I believe you are looking for the find command.

find(Logic)

[Lucas Russi]

find(Logic) = [1 2 3 7 8 10]

not exactly - I'm aware of find; there's one more step to get to what I put as my desired Output .. and there's the issue

[Jeremy]

You could use

diff

to determine adjacent numbers and drop the intermediate numbers appropriately

[Lucas Russi]

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 ?