matlab 三维图

mesh函数是用来画三维网格图的,但是要用meshgrid来产生格网矩阵!有时我们要在图上用标点来显示某些数值的重要性,就要用到mesh和plot3两个函数.>> [X,Y]=m

z=Fa.*cos(a)；x=(Fa.*sin(a)).*cos(b);y=(Fa.*sin(a)).*sin(b);%%错误代码中z,x,y的大小为1*100surf要z是方阵,不能是1列或者1行.

a=0:pi/50:2*pi;x=5*sin(a)+2*sin(5*a/3).*cos(a);y=5*cos(a)-2*sin(5*a/3).*sin(a);z=3-2*cos(5*a/3);plot

需要加一句meshgrid产生三维网格数据矩阵,如下：x=0:10:1000;y=-500:10:500;[X,Y]=meshgrid(x,y)c=14831./(pi.*0.314278.*X.^0

clcclear%xyz有以下关系：x=linspace(0,1,1000);y=linspace(-1*pi,pi,1000);a=6;S=a+x;B=sqrt(a^2+x.^2+2*a*x.*co

clear all;clc;m1 = linspace(0,20,200);  % 定义m的范围,100为网格密度alpha1 =

x=0:5;y=0:5;R=rand(6,6)z=R;[x,y]=meshgrid(x,y);mesh(x,y,z);这个已经在我电脑上试过了,可以的（7.0版的）

forx1=0.01:0.5fory1=0:x1z=y*x^2;endfory1=x1:0.5z=x.*y^2endend量化间隔可自行设定.

clearss=0:0.05:1;[m,n]=size(ss);[xx,yy]=meshgrid(ss,ss);fori=1:m*nforj=1:m*nx=xx(i,j);y=yy(i,j);if(x

clearx=[0.1,0.2];%orx=0.1*[1:2]_y=[0.1,0.2,0.3,0.4];%ory=0.1*[1:4]fori=1:length(x)forj=1:length(y)z(

close all;clear all;clc;x = linspace(0,30,100); % 这里取了x上限30, 可根据需

x=(1:100);y=(1:100);z=3*(1-x).^2.*exp(-(x.^2+(y+1).^2))-(0.2*x-x.^3-y.^5).*exp(-(x.^2-y.^2))-exp(-(x

clear,clc[x,y]=meshgrid(-1:0.05:1);z=sqrt(1-x.^2-y.^2);mesh(x,y,real(z));holdonmesh(x,y,-real(z));这样

自己做的,不知可否.

clcclearp=[3.6,4.6,5.6,7.6,8.6];x=linspace(5,20,200);y=linspace(6.5,17.5,200);[xx,yy]=meshgrid(x,y);

a=0.4:0.05:1.0;b=0:0.05:1.0;[x,y]=meshgrid(a,b);z=259*(1.4+x+x.*y);mesh(x,y,z)

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clearall;[x,y]=meshgrid(0:50:25000,-2000:50:2000);%设定网格,下风向排放点距离x米,烟气中心轴水平距离y米Q=30;%源强,释放速度gam1=0.11

x=0.1:0.001:1;y=1:.5:100;[X,Y]=meshgrid(x,y);Z=sqrt(0.5*(1+X))./(X.*Y);mesh(X,Y,Z);

c=0.785;Vif=c*pi*sqrt(3)/8;a=30;b=solve('tan(a)=3*sqrt(2)*tan(b)');d=solve('tan(a)=6*tan(d)');Vsf=(1