Matlab实现绘制圆柱体

    surf(x_j,y_j,z_lim,'facecolor',[0.5,0.5,0.5],'LineStyle','none');
    hold on
    fill3(x_j(1,:),y_j(1,:),z_lim(1,:),'b');
    fill3(x_j(2,:),y_j(2,:),z_lim(2,:),'b');