1、Matlab画函数图像用Matlab画函数图像一、螺旋线1.静态螺旋线a=0:0.1:20*pi;h=plot3(a.*cos(a),a.*sin(a),2.*a,b,linewidth,2);axis(-50,50,-50,50,0,150);grid onset(h,erasemode,none,markersize,22);xlabel(x轴);ylabel(y轴);zlabel(z轴);title(静态螺旋线);2.动态螺旋线t=0:0.1:10*pi;i=1;h=plot3(sin(t(i),cos(t(i),t(i),*,erasemode,none);grid onaxis(-2
2、 2 -2 2 0 35)for i=2:length(t) set(h,xdata,sin(t(i),ydata,cos(t(i),zdata,t(i); drawnow pause(0.01)endtitle(动态螺旋线);(图略)3.圆柱螺旋线t=0:0.1:10*pi;x=r.*cos(t);y=r.*sin(t);z=t;plot3(x,y,z,h,linewidth,2);grid onaxis(square)xlabel(x轴);ylabel(y轴);zlabel(z轴);title(圆柱螺旋线)二、旋转抛物面b=0:0.2:2*pi;X,Y=meshgrid(-6:0.1:6)
3、;Z=(X.2+Y.2)./4;meshc(X,Y,Z);axis(square)xlabel(x轴);ylabel(y轴);zlabel(z轴);title(旋转抛物面)或直接用：ezsurfc(X.2+Y.2)./4) 三、椭圆柱面load clownezsurf(2*cos(u),4*sin(u),v,0,2*pi,0,2*pi)view(-105,40) %视角处理shading interp%灯光处理colormap(map) %颜色处理grid on %添加网格线axis equal %使x,y轴比例一致xlabel(x轴);ylabel(y轴);zlabel(z轴); %添加坐标
4、轴说明title(椭圆柱面) %添加标题四、椭圆抛物面b=0:0.2:2*pi;X,Y=meshgrid(-6:0.1:6);Z=X.2./9+Y.2./4;meshc(X,Y,Z);axis(square)xlabel(x轴);ylabel(y轴);zlabel(z轴);title(椭圆抛物面)或直接用：ezsurfc(X.2./9+Y.2./4)五、双叶双曲面ezsurf(8*tan(u)*cos(v),8.*tan(u)*sin(v),2.*sec(u),-pi./2,3*pi./2,0,2*pi)axis equalgrid onaxis squarexlabel(x轴);ylabel
5、(y轴);zlabel(z轴);title(双叶双曲面)六、双曲柱面load clownezsurf(2*sec(u),2*tan(u),v,-pi/2,pi/2,-3*pi,3*pi)hold on %在原来的图上继续作图ezsurf(2*sec(u),2*tan(u),v,pi/2,3*pi/2,-3*pi,3*pi)colormap(map)shading interpview(-15,30)axis equalgrid onaxis equalxlabel(x轴);ylabel(y轴);zlabel(z轴);title(双曲柱面)七、双曲抛物面（马鞍面）X,Y=meshgrid(-7:
6、0.1:7);Z=X.2./8-Y.2./6;meshc(X,Y,Z);view(85,20)axis(square)xlabel(x轴);ylabel(y轴);zlabel(z轴);title(双曲抛物面)或直接用：ezsurfc(X.2./8-Y.2./6)八、抛物柱面X,Y=meshgrid(-7:0.1:7);Z=Y.2./8;h=mesh(Z);rotate(h,1 0 1,180) %旋转处理%axis(-8,8,-8,8,-2,6);axis(square)xlabel(x轴);ylabel(y轴);zlabel(z轴);title(抛物柱面)或直接用：ezsurfc(Y.2./
7、8)九、环面ezmesh(5+2*cos(u)*cos(v),(5+2*cos(u)*sin(v),2*sin(u),0,2*pi,0,2*pi)axis equalgrid onxlabel(x轴);ylabel(y轴);zlabel(z轴);title(环面)十、椭球ezsurfc(5*cos(u)*sin(v),(3*sin(u)*sin(v),4*cos(v),0,2*pi,0,2*pi)axis equalgrid onxlabel(x轴);ylabel(y轴);zlabel(z轴);title(椭球)十一、单叶双曲面ezsurf(4*sec(u)*cos(v),2.*sec(u)*
8、sin(v),3.*tan(u),-pi./2,pi./2,0,2*pi)axis equalgrid onxlabel(x轴);ylabel(y轴);zlabel(z轴);title(单叶双曲面)十二、旋转单叶双曲面load clownezsurf(8*sec(u)*cos(v),8.*sec(u)*sin(v),2.*tan(u),-pi./2,pi./2,0,2*pi)colormap(map)view(-175,30)%alpha(.2) %透明处理axis equalgrid onaxis squarexlabel(x轴);ylabel(y轴);zlabel(z轴);title(旋转
9、单叶双曲面)十三、圆柱面subplot(1,2,1)ezsurf(2*cos(u),2*sin(u),v,0,2*pi,0,2*pi)grid onshading interpaxis equalxlabel(x轴);ylabel(y轴);zlabel(z轴);title(圆柱面)subplot(1,2,2)cylinder(30)shading interpaxis squaretitle(调用cylinder函数所得圆柱面)下面给出用colormap()改变图像颜色的例子:(用了灯光效果shading interp)colormap(); %hot/cool/copper/gray/hsv/spring/summer/winter. colormap(hsv) colormap(hot) colormap(gray) colormap(cool) colormap(copper) 下面做了旋转(view( )、灯光（“shading interp”）、透明（“alpha()”）处理： -精心整理，希望对您有所帮助!
