The error message is :
Error using line
Vectors must be the same length.
Error in filter_and_star_and_final (line 37)
line([t(t_startx), t(t_startx)], ylim, 'Color', 'r', 'LineWidth', 2); % Put a red line there.
I have attache my code and the file that I am trying to use.
I would appreciate any help