MATLAB: Struggling at ‘Events’ of ODE45

Question

Hello,

I have a ODE and need to compute the "exact" time and values of y at y(2)=0 and I'm using ode45 and 'Events'.

When I run my function, I get the error message: 'error using events. Not enough input variables.'

The part of my code:

options=['RelTol',1e2*AbsTol,'AbsTol',AbsTol*ones(1,length(condIni))...
              ,'Refine',8,'Events',seccio];
      [T,Y,Te,Ye,Ie] = ode45(funRTBP,incT,condIni,options );

And my events function:

function [value,isterminal,direction] = seccio(t,y)
value      = y(2);
direction  = 0;
isterminal = 1;
end

AbsTol and condIni are correctly defined.

Thanks for your help.

Answer 1

options = odeset('RelTol', 1e2*AbsTol, 'AbsTol', AbsTol*ones(1,length(condIni)), ...
         'Refine', 8, 'Events', @seccio);