T-offset determination on ECG

Hi! How can I get T wave offset values from an ECG data file? (and maybe other parameters)

Is there any function or toolbox I can use? The ones I find never sett T wave offset.

The data file as 250000 values for ECG voltage from a participant.

Thank you!

[Star Strider]

To calculate the Q-T interval (onset of the QRS complex to the end of the T-deflection), likely the best option is to use findhangepts or ischange.

[Ana Gabriela Guedes]

And I apply those functions in which conditions?

[Star Strider]

Experiment with them and their argument options to get the result you want.

This is not at all a straightforward problem!