I wanted to iterate this piece of code for 10 seconds.

disp('Opening an inlet...');
inlet = lsl_inlet(stream_result{1});
[vec,ts] = inlet.pull_sample();
start = ts;
fNIRS_record = []; 
flag = 0;
    while ts - start < 1 %one second data which is ~8 frames
        [vec,ts] = inlet.pull_sample();
        fNIRS_record = [fNIRS_record;vec]; 
        fprintf('%.2f\t',vec);
        fprintf('%.5f\n',ts);
        flag = flag + 1;
    end

    if(flag == size(fNIRS_record,1))
        %Real time channel exclusion based on threshCV
        RT_HbO = fNIRS_record( :,2:2:end);%getting only HbO values at real time

        %using getCV() eliminate bad channels.
        RT_vertcat = mean(RT_HbO,2);%avg of all 20 channels.
        RT_vertcat = array2table(RT_vertcat);
        realtime_stats_HbO = groupsummary(RT_vertcat,{}, {'mean', @slope_HbO, @(v) var(v, 1), @(pk) max(pk), @(sk) skewness(sk), @(kurt) kurtosis(kurt)});
         clear flag;clear RT_HbO;clear RT_vertcat;
        label = trainedModel.predictFcn(realtime_stats_HbO); %<--------------It has predict and print the label and clear everything and run the loop again for desired time period which is 10 seconds.
    end

Answer 1

[Walter Roberson]

tic;
while toc < 10

Timing is unlikely to be exact.

[CalebJones]

Walter Roberson

Doesn't do what i want it to do.

I want it to run ~10 times in 10 seconds.

[Walter Roberson]

for iter = 1 : 10
    tic;
    ... do the work
    pause(1-toc);
end

[CalebJones]

Walter Roberson

It runs for one iteration and pauses for 10 seconds thats all.

See inlet = lsl_inlet(stream_result{1});

[vec,ts] = inlet.pull_sample();

start = ts;

Through inlet my data is continuos flowing in at real time.

ts is the start of frame.

I have make changes to start such that it iterates the way i want it to.

Basically i want to give it 10 seconds

while ts - start < 1 %one second data which is ~8 frames

Here it 1 second gives me 8 values and using groupsummary I am calculating statical features.

after which label = trainedModel.predictFcn(realtime_stats_HbO); using the statical feature i want run it through my model to predict a state.

Then i want to start fresh again ....till 10th second