美赛matlab3D绘图必备.pptxVIP

MatLab绘图三维图形

clf;t=(pi*(0:1000)/1000);添加标题subplot(2,2,2),plot(t,y2);axis([0,pi,-1,1])添加标题y1=sin(t);y2=sin(10*t);y12=sin(t).*sin(10*t);添加标题subplot(position,[0.2,0.05,0.6,0.45])添加标题subplot(2,2,1),plot(t,y1);axis([0,pi,-1,1])添加标题plot(t,y12,b-,t,[y1,-y1],r:);axis([0,pi,-1,1])添加标题

三维图形

[x,y]=meshgrid(-3:0.3:3,-2:0.3:2);z=(x.^2-2*x).*exp(-x.^2-y.^2-x.*y);mesh(x,y,z)axis([-3,3,-2,2,-0.7,1.5])colorbarfigure,surf(x,y,z),axis([-3,3,-2,2,-0.7,1.5]),colorbar

三维图形三维线的绘图函数—plot3plot3(u1,v1,w1,u2,v2,w2…)空间的直线plot3([x1;x2],[y1;y2],[z1;z2])ps.三维图形的注释中，除了用zlabel标注z轴外，其他二维图形中的函数都可使用。

三维图形t=0:pi/50:10*pi;plot3(sin(t),cos(t),t)title(Helix),xlabel(sin(t)),ylabel(cos(t)),zlabel(t);text(0,0,0,Origin)

三维图形

三维图形例，作一线框盒盒子尺寸为Lx*Ly*Lz.创建函数boxplot3，画出盒子六个面的四条边。盒子位置和方向由两个对角坐标P(x0,y0,z0)和P(x0+Lx,y0+Ly,z0+Lz)确定。boxplot3(1,1,1,3,5,7)boxplot3(4,6,8,4,5,1)boxplot3(8,11,9,1,1,1)

三维图形functionboxplot3(x0,y0,z0,lx,ly,lz)%(0,0,0),(1,1,1)x=zeros(1,8);x(1:4)=x0;x(5:8)=x0+lx;%x=00001111y=zeros(1,8);y(1:8)=y0;y(3:4)=y0+ly;y(7:8)=y0+ly;z=zeros(1,8);z(1:8)=z0;z(2:3)=z0+lz;z(6:7)=z0+lz;%y=00110011%z=01100110index=zeros(6,5);index(1,:)=[1:41];index(2,:)=[5:85];index(3,:)=[12651];index(4,:)=[43784];index(5,:)=[26732];index(6,:)=[15841];fork=1:6plot3(x(index(k,:)),y(index(k,:)),z(index(k,:)))holdonend

三维图形

三维图形01添加标题柱形图—cylinder02添加标题[x,y,z]=cylinder03添加标题[x,y,z]=cylinder(r)04添加标题[x,y,z]=cylinder(r,n)05添加标题cylinder06添加标题cylinder(100,100)

三维图形

三维图形PARTONEt=0:pi/10:2*pi;cylinder(2+cos(t));

三维图形单击此处添加大标题内容X=0:.2:pi;R=exp(-X.^2/2).*sin(X);%plot(R,X)%axis(square)figure;[x,y,z]=cylinder(R,20);surf(x,y,z*pi)axis([-0.6,0.6,-0.6,0.6,0,pi])

三维图形

三维图形三维饼图—pie3#2022

三维图形曲面—meshsurf表达式surf/mesh(x,y,z)例：创建z(x1,x2)=x14+3*x12+x22-2*x1-2*x2-2*x12x2+6构成的三维图形，x1=[-33]x2=[-313]xx1=linspace(-3,3,15);xx2=linspace(-3,13,17);[x1,x2]=meshgrid(xx