Dividing array to subarrays based on threshold

Hi. For an array, for example:

A=[0 1 2 3 4 3 2 1 0 1 1 2 3 7 8 4 3 2 1];

I'm trying to extract any subarray that goes beyond a certain threshold, fex x=2

So in the example above, I would be looking to extract [2 3 4 3 2] and [2 3 7 8 4 3 2]

I'm also looking for negative values (i.e. any subarray that goes below -2)

How can I do this in MATLAB? Thanks!

Answer 1

[Mathieu NOE]

this is my 2 cent suggestion

A=[0 1 2 3 4 3 2 1 0 1 1 2 3 7 8 4 3 2 1 0 1 2 4 8 9 6 3 2 1];
threshold = 2;

ind = find(A>=threshold);
ind2=find(diff(ind)>1);

ind_start = [ind(1) ind(ind2+1)];
ind_end = [ind(ind2) ind(end)];

for ck = 1:length(ind_end)
    B{ck} = A(ind_start(ck):ind_end(ck));
end