how to plot implicit functions, witch given as matrix?

I have this code

[t1, X] = ode23('vdpol', tspan, x0); [t2, Y] = ode23('vdpol', tspan, y0);

and I want to plot trajectories of points - 2D plot, shows Y(X) functions. But t1 and t2 are not the same time vectors, sometimes they have different sizes. Is any way to "approximate" X and Y vectors to plot then.

Answer 1

[Star Strider]

‘... t1 and t2 are not the same time vectors ...’

You can make them be the same (for all intents and purposes) by defining ‘tspan’ as a vector of more than 2 elements.

This:

tspan = linspace(0, 10, 25);

creates ‘tspan’ as a vector going from 0 to 10, and having 25 elements. The ODE solvers will report solutions at each element of ‘tspan’.