How to plot a vector field?
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function xp=Pr(t,x)
xp=x;
x1=x(1);
x2=x(2);
xp(1)=(x1.^2) - 312.*x1 + 6.*x2;
xp(2)=-1/2.*(x1.^2) - x1.*x2 + 292.*x1 + 144.*x2;
I'm trying to plot a vector field for this function using meshgrid and quiver and I don't manage to figure it out. Need help! Thanks!
2 个评论
Andrew Reibold
2014-11-14
What did you try? Did you read the documentation for meshgrid and quiver?
Also, we can't help you really with such limited information. Does xp just contain two scalar values? I have no idea what is in there because we dont' know what Pr is nor the values of t and x. There is not enough information, and no shown attempt to create a vector field.
It seems you already know which functions to try.
Star Strider
2014-11-14
I’m having problems integrating your ODE with both ode45 and ode15s. What are your initial conditions and ‘tspan’?
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