Matlab drawing 1

Draw multiple function images at the same time

figure,plot(x1,y1);
figure,plot(x2,y2);

eg

x=-10:0.1:10;
y1=x.^2-8;
y2=exp(x);
figure,plot(x,y1);
figure,plot(x,y2);
//此时gcf与gca表示的是figure的句柄值

效果如下：

Put multiple function images in one window

subplot(m,n,num);//m是行数,n是列数,numis the first picture

eg：

t=0:0.1:2*pi;x=3*cos(t);
y1=sin(t);y2=2*sin(t);y3=3*sin(t);y4=4*sin(t);
subplot(2,3,1);plot(x,y1);
subplot(2,3,2);plot(x,y2);
subplot(2,3,3);plot(x,y3);
subplot(2,3,4);plot(x,y4);

效果如下

保存图像

saveas(gcf,'<filename>','<formattype>');

位图格式 矢量图格式