高建军matlab程序设计第四和五章matlab绘图.10

1、允许设置的数据点型05101520253035404550-8-6-4-20246810行列绘图序号t=0:0.1:2*pi;y=sin(t);y1=sin(t+0.25);y2=sin(t+0.5);subplot(1,3,1);plot(t,y)subplot(1,3,2);plot(t,y1)subplot(1,3,3);plot(t,y2)t=0:0.1:2*piy=sin(t);y1=sin(t+0.25);y2=sin(t+0.5);subplot(3,1,1);plot(t,y)subplot(3,1,2);plot(t,y3)subplot(3,1,3);plot(t,y2)注

2、意：一旦区域叠加，则覆盖(1) 直接保存：直接保存：方法一，菜单栏点击文件-另存为，输出图片； 方法二，菜单栏点击文件-导出设置，选择参数，输出图片(2) saveas命令保存：命令保存：saveas(图形句柄,图名,图形格式)图形句柄：gcf,h等；图名：待保存的图形名称；图形格式取值：fig,jpeg,tiff,png,bmp,eps等(3) print命令保存：命令保存：print(图形句柄,-depsc2,-r600,abc.eps)print(图形句柄,-djpeg,-r600,abc.jpeg) x=-pi:2*pi/300:pi; y=sin(x); h=plot(x,y); s

3、aveas(h,fig1,fig ) saveas(h,fig1,tiff ) saveas(h,fig1,bmp )例1：saveas命令 x=-pi:2*pi/300:pi; y=sin(x); plot(x,y); print(gcf,-dpng,fig2.png)print(gcf,-dbitmap,fig2.bmp) print(gcf, -depsc2,-r600,fig2.eps)例2：print命令 print fig3.jpeg -djpeg -r600例3：print命令z=peaks(30)pcolor(z)shading flatshading interph6=col

4、orbar;y=1:10;x=1:10;z=randn(10,10);pcolor(x,y,z);shading flatshading interph6=colorbar;y=1:10;x=1:10;z=randn(10,10);contour(x,y,z);c=contourc(x,y,z);clabel(c)t=(1/16:1/8:1)*2*pi; %定义八角形的刻度x=sin(t);y=cos(t);h=fill(x,y,r);axis squareset(h,linewidth,5)set(gcf,color,w,position,400,350,250,150,menubar,no

5、ne)set(gca,visible,off)010203040-1-0.500.51-1-0.500.5127%30%20%13%10%0246024600.20.40.60.810246802468-1-0.500.51nm维坐标矩阵坐标向量纵坐标矩阵绘图函数-202-202-505xypeaks-4-2024-4-2024-10-50510-4-2024-4-2024-10-50510-1-0.500.51-1-0.500.5100.20.40.60.81for i=1:2, for j=1:2, ax(i-1)*2+j)=subplot(2,2,(i-1)*2+j); end,endt

6、 = 0:pi/10:2*pi;for i=1:length(ax), cylinder(ax(i),2+cos(rand+1)*t);end例：创建4个坐标系，然后在4个坐标系中分别绘制旋转体-1-0.500.51-1-0.500.51-1-0.500.51调和色0.5 0.5 0.5 灰色0.5 0 0 暗红色1 0.62 0.4 铜色0.49 1 0.8 浅绿0.49 1 0.83 宝石兰注： surf(peaks);colormap hot或者 colormap(hot)-202-202-505xypeaks-202-202-505xypeakssurfl：有亮度01020300102

7、030-10-5051001020300102030-10-5051002040600204060-10-5051002040600204060-10-505100204002040-10010az=-37.5,el=300204002040-10010az=-15,el=6002040-10-50510az=-90,el=00204002040-10010az=-7,el=-1001020300102030-10-5051002040600204060-10-50510clf;shg,x=3*pi*(-1:0.05:1);y=x;x,y=meshgrid(x,y);r=sqrt(x.2+y.2)+eps;z=sin(r)./r;h=surf(x,y,z);colormap