A..11 meshgrid(m,n) と meshx(x,y,f)

testofmeshgrid.m

L=3; H=2;
a=-L; b=L; c=-H; d=H;
nx=30; ny=20;
X=linspace(a,b,nx+1);
Y=linspace(c,d,ny+1);
[x,y]=meshgrid(X,Y);
% f(x,y)=sin(x)sin(2y)
F=sin(x).*sin(2*y);
figure('Name','graph of F')
meshc(x,y,F)
fig1=gcf; figure(fig1)
% g(x,y)=x^2-y^2
G=x.^2-y.^2;
figure('Name','graph of G')
meshc(x,y,G)
fig2=gcf; figure(fig2)