sum multiple clock times

Hi

How to sum multiple clock times in MATLAB assuming it resets every 24 hours?

[the cyclist]

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Specifically, it would be useful to know data type your times are stored as. It would be most helpful if you uploaded your input data.

Answer 1

[Raghav]

Hi,

I understand that you want to sum multiple clock times.

In the following solution, I have assumed that the input argument times is a cell array of time strings in the format hh:mm:ss & the function returns the sum of all times as a time string in the same format.

To sum multiple clock time in MATLAB assuming they reset every 24 hours, you can perform the following steps:

1. Convert each time string to a numerical value in hours.
2. If the resulting value is greater than 24, subtract 24 to ensure that it is within the range of [0, 24).
3. Add the numerical values of all times.
4. If the sum is greater than 24, subtract 24 to ensure that it is within the range of [0, 24).
5. Convert the resulting numerical value back to a time string.

You may refer to the below mentioned example code for summing multiple clock times in MATLAB:

function total_time = sum_clock_times(times)

% Initialize the total time
total_time = 0;

% Loop through each time string
for i = 1:length(times)
    
    % Split the time string into hours, minutes, and seconds
    [hours, minutes, seconds] = strread(times{i},'%d:%d:%d');
    
    % Convert the time to a numerical value in hours
    time_in_hours = hours + minutes/60 + seconds/3600;
    
    % If the time is greater than 24, subtract 24
    if time_in_hours >= 24
        time_in_hours = time_in_hours - 24;
    end
    
    % Add the time to the total time
    total_time = total_time + time_in_hours;
    
end

% If the total time is greater than 24, subtract 24
if total_time >= 24
    total_time = total_time - 24;
end

% Convert the total time to a time string
hours = floor(total_time);
minutes = floor((total_time - hours) * 60);
seconds = floor((((total_time - hours) * 60) - minutes) * 60);
total_time = sprintf('%02d:%02d:%02d', hours, minutes, seconds);

end

Moreover, you may also have a look at the similar question thread from the following link: https://in.mathworks.com/matlabcentral/answers/694005-summing-datenum-resets-after-24-hours

Regards,

Raghav Bansal