MATLAB绘图---饼图、三维曲线

% t = linspace(0,2 * pi,100);

% x = sin(t);

% y = cos(t);

% 

% plot(x,y,':g');

% hold on

% plot(1 / 2 * x,1 / 2 * y,'r--');

% 

% grid on

% axis([-2.2,2.2,-2.2,2.2]);

% 

% axis equal;

%%%%按极坐标方程ρ = 1 - sin(θ)绘制极坐标心形曲线

% t = 0: pi / 100 :2 * pi;

% r = 1 - sin(t);  %%极径

% subplot(1,2,1);

% polar(t,r);

% 

% subplot(1,2,2);

% t1 = t - pi / 2;

% r1 = 1 - sin(t1);

% polar(t,r1);

%%%条状图

% y = [1,2,3,4,5;3,4,5,7,8];

% subplot(1,2,1);

% bar(y);

% 

% subplot(1,2,2);

% bar(y,'stacked');

%%%绘制高斯分布的直方图