portr3d - 3 dimensional phase portrait.
pinit = [x0(1), x1(1),...., xn(1) x0(2), x1(2),...., xn(2) x0(3), x1(3),...., xn(3)].
Interactive integration and display of a 3 dimensional phase portrait of a dynamical system dx/dt=f(t,x,[u]) (where u is an optional parameter )
ode ,