function [Xp,Yp,Zp]=get_plan(aa,bb,cc,dd)



% X value to meshgrid.
x=-550:15:550;
[Xp,Yp] = meshgrid(x);

% Equation of Z based on plan equation.
Zp=-aa/cc*Xp-bb/cc*Yp+dd/cc;



end