MATLAB: How to create a sliding window and/or bin that records the number of elements over a given time period

binsMATLABsliding window

I have neural data collected across 16 different channels (2d matrix = 756909 x 16). This data was recorded over a 30 second period (2d matrix 1 x 756909).
For each channel, I have calculated an amplitude threshold (2d matrix 1 x 16).
Over a 10s period (from 20 – 30s), I want to record the number of neural data points that are greater than or equal to the corresponding threshold for each channel. I would like to do this in windows (or bins) of 0.001s.
My code so far is still very deficient but looks like this:
t1 = 20; %start time, seconds
t2 = 30; %end time, seconds
time = tim_trl(tim_trl>=t1 & tim_trl<=t2); %10s window
for ii = 1:16
   
    for jj = t1:0.001:size(time,2)
    
    
    end
        
    
end
I would appreciate any help or advice.

Best Answer

t1 = 20; %start time, seconds
t2 = 30; %end time, seconds
win=tim_trl>=t1 & tim_trl<=t2;
time = tim_trl(win); %10s window
edges=time(1):0.001:time(end)+0.001;
bins=discretize(time,edges);
result=splitapply(@(z)sum(z,1), neuralData(win,:) >= thresholds ,findgroups(bins(:)))
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