Matlab error message, help please

[Daniel1992]

I get this error message

Subscript indices must either be real positive integers or logicals.

Error in doubleODE (line 14)
dYdt(2) = l1*(m1 + m2)*Y(4) - l2*m2*Y(3)*cos(Y(1) - Y(2))/...

I am having trouble working out what is causing the problem. Any advice?

Thanks

 

[Simon Bridge]

It means that you have indices which are not positive integers or logicals so that it chokes on line 14
The actual fault will be before then - without the source code we cannot possibly help.

 

[Daniel1992]

I found the error. Turns out I missed a * when multiplying :-|

 

[Simon Bridge]

Well done.
Amazing what you miss.