用matlab绘制的漂亮图形1.不同坐标系下的图形对比theta=0:pi/20:4*pi;phi= theta.^2- theta;[t,p]=meshgrid(theta,phi);r=t.*p;subplot(1,2,1);mesh(t,p,r);ylabel('x');xlabel('y');zlabel('z');[x,y,z]=sph2cart(t,p,r);subplot(1,2,2);mesh(x,y,z);ylabel('x');xlabel('y');zlabel('z');2.球曲面的法线[x,y,z]=sphere;Surfnorm(x,y,z)3.x=rand(100,1)*16-8;y=rand(100,1)*16-8;r=sqrt(x.^2+y.^2)+eps;z=sin(r)./r;xlin=linspace(min(x),max(x),33);ylin=linspace(min(y),max(y),33); [X,Y]= meshgrid(xlin,ylin);Z=griddata(x,y,z,X,Y);mesh(X,Y,Z);axis tight;hold on;ylabel('x');xlabel('y');zlabel('z'); plot3(x,y,z,’r’,’MarkerSize’,15)x=rand(1000,1)*16-8;y=rand(1000,1)*16-8;r=sqrt(x.^2+y.^2)+eps;z=sin(r)./r;xlin=linspace(min(x),max(x),99);ylin=linspace(min(y),max(y),99); [X,Y]= meshgrid(xlin,ylin);Z=griddata(x,y,z,X,Y);mesh(X,Y,Z);axis tight;hold on;ylabel('x');xlabel('y');zlabel('z'); plot3(x,y,z,'r','MarkerSize',30);去掉网格后：4.圆通fnplt(fncmb(rsmak(‘cylinder’,1,2),[0 0 -1;0 1 0;1 0 0])); axis equal,axis off;shading interp5.c=8.01*10^(-6);T=9.8*0.940*10^(-7);for m=1:100a=m/10000000;for n=1:100b=n/10000000;omiga(m,n)=sqrt((10.6667*a^3*b^5+10.6667*a^5*b^3)/(2.3112*a^5*b^5*c)* T)/(2*pi);endendmesh((1:100)/10000000,(1:100)/10000000,omiga);ylabel('半短轴b');xlabel('半长轴a');zlabel('频率f');6.马鞍面x=-8:8; y=-8:8;[X,Y]= meshgrid(x,y);Z=(X.^2./4.^2-Y.^2./5.^2);meshz(X,Y,Z);ylabel('x');xlabel('y');zlabel('z');x=-8:8;y=-8:8;[X,Y]= meshgrid(x,y);Z=X.^2./4.^2-Y.^2./5.^2;surfc(X,Y,Z);ylabel('x');xlabel('y');zlabel('z');7.螺旋线t=0:pi/60:10*pi;x=sin(t);y=cos(t);plot3(x,y,t,'*-b');ylabel('x');xlabel('y');zlabel('z');t=0:pi/60:10*pi;x=sin(t);y=cos(t);fill3(x,y,t,'*-b');ylabel('x');xlabel('y');zlabel('z');8.[x,y]= meshgrid([-2:0.2:2]); f=x.^2+y.^2;[fx,fy]= gradient(f,0.2,0.2); quiver(x,y,fx,fy);hold oncontour(x,y,f);9.[x,y]= meshgrid([-4:0.1:4]); z=x.*exp(-x.^2-y.^2);plot3(x,y,z);10. [x,y]= meshgrid([-2:0.05:2]); z=x.*exp(-x.^2-y.^2);surf(x,y,z);11.牛顿环（动态的）clearR=1;N=400;lamda=200e-9;rr=0.0017; [x,y]= meshgrid(linspace(-rr,rr,N)); r=sqrt(x.^2+y.^2);phi=r.^2/R./lamda.*pi.*2+pi;I=4.*cos(phi./2).^2;H=imshow(I);t=0;k=1;while k;s=get(gcf,'currentkey');if strcmp(s,'space');clc;k=0;endt=t+0.01;pause(0.2);phi=phi+t;I=4.*cos(phi./2).^2;set(H,'CData',I);end12.衍射调制下的双孔干涉条纹clear alllambda=500e-9;D=1;d=1e-6;a=3.5*d;ymax=10*lambda*D/a;xmax=ymax;N=101;xs=linspace(-xmax,xmax,N);ys=linspace(-ymax,ymax,N);for i=1:N;for j=1:N;r1(i,j)=sqrt(D.^2+(ys(i)-a./2).^2+xs(i).^2);r2(i,j)=sqrt(D.^2+(ys(j)-a./2).^2+xs(j).^2);Dr=r2-r1;phi(i,j)=Dr(i,j)./lambda.*pi.*2;m(i,j)=pi.*d.*sin(phi(i,j))./lambda;I(i,j)=(4.*cos(phi(i,j)./2).^2).*real((2.*besselj(1,m(i,j))./m(i,j)). ^2);endendNC=225;Ir=I*NC;subplot(1,2,1);image(xs,ys,Ir);axis equalcolormap(gray(NC));subplot(1,2,2);plot(I,m),hold onlambda=600e-9;D=1;d=1e-6;a=2.5*d;ymax=10*lambda*D/a;xmax=ymax;N=101;xs=linspace(-xmax,xmax,N);ys=linspace(-ymax,ymax,N);for i=1:N;for j=1:N;r1(i,j)=sqrt(D.^2+(ys(i)-a./2).^2+xs(i).^2);r2(i,j)=sqrt(D.^2+(ys(j)-a./2).^2+xs(j).^2);Dr=r2-r1;phi(i,j)=Dr(i,j)./lambda.*pi.*2;m(i,j)=pi.*d.*sin(phi(i,j))./lambda;I(i,j)=(4.*cos(phi(i,j)./2).^2).*real((2.*besselj(1,m(i,j))./m(i,j)). ^2);endendNC=225;Ir=I*NC;colormap(gray(NC));plot(m,I),hold on13.lambda=500e-9;D=1;d=1e-6;a=3.5*d;ymax=10*lambda*D/a;xmax=ymax;N=101;xs=linspace(-xmax,xmax,N);ys=linspace(-10000*ymax,10000*ymax,N);for i=1:N;for j=1:N;r1(i,j)=sqrt(D.^2+(ys(i)-a./2).^2+xs(i).^2);r2(i,j)=sqrt(D.^2+(ys(j)-a./2).^2+xs(j).^2);Dr=r2-r1;phi(i,j)=Dr(i,j)./lambda.*pi.*2;I(i,j)=real(4.*cos(phi(i,j)./2).^2);endendNC=225;Ir=I/3.*NC;image(xs,ys,Ir);colormap(gray(NC));hold on14.沙丘figure( 'Position',[200 31 700 696],'color','w'); hold on ;axis equal ; axis offtitle('沙丘','fontsize',16,'color','k');text(180,480,'——万祎龙 ','fontsize',12,'color','k');i=1;for py=1:2:360c=py*4*pi/360;b=pi*cos(c);a=0:pi/30:6*pi;x=100*a/pi+20;y=10*sin(a+cos(a)*pi-b)*cos(c)+py;plot(x,y,'color','k');Z(i,:)=sin(a+cos(a)*pi-b)*cos(c);i=i+1;end15.%存脚本文件heart.m%%一个半径为R的圆周等分成N份，然后一等分点为圆心，以等分点到该圆垂直直径%%的距离为半径画圆。

N=90;R=1;t0=(1:N)*2*pi/N; %%中央圆x0=R*cos(t0);y0=R*sin(t0);t1=linspace(0,2*pi,100); %运动圆X=cos(t1);Y=sin(t1);figure('color','k');hold onfor i=1:Nx=x0(i)+x0(i)*X;y=y0(i)+x0(i)*Y;plot(x,y,'g');endaxis equalaxis off16.figure('color','k','Position',[1 31 1280 696]);axes1=axes('position',[0.2 0.6 0.3 0.3]);axis( axes1,'equal');axis(axes1,'off');hold onrl=1;rs=0.5;N=30;t1=linspace(0,2*pi,N); xl=rl*cos(t1); yl=rl*sin(t1); t2=linspace(0,2*pi,100); xs=rs*cos(t2); ys=rs*sin(t2);for i=1:Nplot(xl(i)+xs,yl(i)+ys);endaxes2=axes('position',[0.5 0.6 0.3 0.3]);axis( axes2,'equal');axis(axes2,'off');hold onrl=1;rs=1;N=30;t1=linspace(0,2*pi,N); xl=rl*cos(t1); yl=rl*sin(t1);t2=linspace(0,2*pi,100); xs=rs*cos(t2); ys=rs*sin(t2);for i=1:Nplot(xl(i)+xs,yl(i)+ys);endaxes3=axes('position',[0.35 0.20 0.3 0.3]);axis( axes3,'equal');axis(axes3,'off');hold onrl=1;rs=1.5;N=30;t1=linspace(0,2*pi,N); xl=rl*cos(t1); yl=rl*sin(t1);t2=linspace(0,2*pi,100); xs=rs*cos(t2); ys=rs*sin(t2);for i=1:Nplot(xl(i)+xs,yl(i)+ys);end17. %%一个半径为R的圆周等分成N份，然后一等分点为圆心，以等分点到定点%%的距离为半径画圆。