Matlab如何保存运行出来的结果图片

  Matlab如何保存运行出来的结果图片，比如下面的驻波图，望解答

clear all
v=1;
A1=-1;A2=1;
x=0:0.01:4;
t=0:0.01:10;
for i=1:length(t)-1
y1=A1*sin(pi*(x-v*t(i)));
y2=A2*sin(pi*(x+v*t(i)));
y=y1+y2;
plot(x,y,'r'),axis([-1,5,-2.2,2.2]);
grid on;
xlabel('驻波');
pause(0.01);
end
z=length(t)-1;             %t的长度
clear all
z  =0: 0.01:6;
y1 = 0;
plot(z,y1,'b');
hold on;
y2 = 10*sin(2*pi*z)*sin(pi/4);
plot(z,y2,'-b');
hold on;
y3 = 10*sin(2*pi*z)*sin(pi/2);
hold on;
y4 = 10*sin(2*pi*z)*sin(5*pi/4);
plot(z,y4,'o');
hold on;
y5= 10*sin(2*pi*z)*sin(3*pi/2);
plot(z,y5,';r');
hold on;
grid on;
xlabel('时间');
ylabel('幅度');
tltle('驻波');