to convert .events to .mat

Hi everyone,

I have openephys recorded files including .continuous and .events.

i am trying to convert .event to .mat using this code.

file_path = 'C:\Users\Documents\Data;
event_data = loadOpenEphysEvents(file_path);

% Extract start and end times
event_start_times = event_data(:, 1);
event_end_times = event_data(:, 2);

for i = 1:length(event_start_times)
    disp(['Event ', num2str(i), ': Start Time - ', num2str(event_start_times(i)), ', End Time - ', num2str(event_end_times(i))]);
end

after running this code i am getting this output

Event 1: Start Time - 0, End Time - 0

Event 2: Start Time - 0, End Time - 0

Event 3: Start Time - 0, End Time - 0

Event 4: Start Time - 0, End Time - 0

Event 5: Start Time - 0, End Time - 0

Event 6: Start Time - 0, End Time - 0

Event 7: Start Time - 0, End Time - 0

Event 8: Start Time - 0, End Time - 0

Event 9: Start Time - 0, End Time - 0

Event 10: Start Time - NaN, End Time - NaN

Event 11: Start Time - NaN, End Time - NaN

Event 12: Start Time - NaN, End Time - NaN

Event 13: Start Time - NaN, End Time - NaN

Event 14: Start Time - NaN, End Time - NaN

Event 15: Start Time - NaN, End Time - NaN

how can i extract event start time and end time?

Answer 1

[Satwik]

Hi Ajay,

I understand that you are having trouble loading a .event file in MATLAB and parsing it to get the data.

First, check your code to make sure that the file_path variable has a closing quotation mark. If it does not, the code will not be able to find the file.

If the issue still exists then there are a few checks you can do

1. You can check the loadOpenEphysEvents function to see if it is returning any data/
2. Finally, you can verify that the data is a 2-column array

If you are still having trouble after making these changes, please provide me with the openephys file itself and I will be happy to take a look at it.

I hope this helps!

Answer 2

[Ajay Kumar]

Hi Satwik,

Thank you for your help, really apreciated.

I ttried all i am still facing probplem.

I am attching the .event file.

looking forward hearning from you.

Thanks you.