这个matlab怎么画投影图或者是等高线图?程序是 figurefor x1=0:0.05:3 for x2=-2:0.05:0 wp=-0.9375*x1; wp1=0.9375*(2-0.5-2*x1)*(0.5+1)*(x2)^2; plot3(x1,x2,wp1-wp,'m.');hold on endendcontourgrid

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这个matlab怎么画投影图或者是等高线图?程序是 figurefor x1=0:0.05:3 for x2=-2:0.05:0 wp=-0.9375*x1; wp1=0.9375*(2-0.5-2*x1)*(0.5+1)*(x2)^2; plot3(x1,x2,wp1-wp,'m.');hold on endendcontourgrid
这个matlab怎么画投影图或者是等高线图?
程序是 
figure
for x1=0:0.05:3
    for x2=-2:0.05:0
        wp=-0.9375*x1;
        wp1=0.9375*(2-0.5-2*x1)*(0.5+1)*(x2)^2;
      
         plot3(x1,x2,wp1-wp,'m.');hold on  
    end
end
contour
grid on
xlabel('\beta');ylabel('\wp_2');zlabel('\Re')

这个matlab怎么画投影图或者是等高线图?程序是 figurefor x1=0:0.05:3 for x2=-2:0.05:0 wp=-0.9375*x1; wp1=0.9375*(2-0.5-2*x1)*(0.5+1)*(x2)^2; plot3(x1,x2,wp1-wp,'m.');hold on endendcontourgrid
figure
x1=0:0.05:3;
x2=-3:0.05:0;
for i=1:length(x1)
    for j=1:length(x2)
        wp=-0.9375*x1(i);
        wp1=0.9375*(2-0.5-2*x1(i))*(0.5+1)*(x2(j))^2;              
       % plot3(x1(i),x2(j),wp1-wp,'m.');hold on  
        z(i,j) = wp1-wp;
    end
end
grid on
xlabel('\beta');ylabel('\wp_2');zlabel('\Re')
figure;
[x,y]=meshgrid(x1,x2);
contour(x,y,z,10);
figure;
surfc(x,y,z);shading interp;