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SYSWELD123

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>> data=load('920.txt');
y=data(:,1);
x=data(:,3);
z=data(:,2);
>> [X,Y]=meshgrid(-0.25:0.001:0.1,-0.015:0.0005:0.015)  
Z=griddata(x,y,z,X,Y)                        
mesh(X,Y,Z)                                   
plot3(x,y,z,'*')                                
pcolor(X,Y,Z);shading interp%α²Êɫͼ
figure,contourf(X,Y,Z) %µÈ¸ßÏßͼ
figure,surf(X,Y,Z);%ÈýάÇúÃæ


data=load('920.txt');
x=data(:,1:2);
y=data(:,3);
beat0=[1,1,1,1]';
[beat,r,j]=nlinfit(x,y,@myfunn,beat0)


data=load('9201.txt');
b=data(:,1);
a=data(:,3);
c=data(:,2);


-c*abs(sqrt(1-(x-d)^2/a^2-y^2/b^2))



data=load('TXYZ.txt');
b=data(:,1);
a=data(:,3);
c=data(:,2);
d=data(:,4);
f=@(q,x)1.87.*q(5).*exp(-3.*((x(:,1)-q(4)).^2./q(1).^2+x(:,2).^2./q(2).^2+x(:,3).^2./q(3).^2))./(q(1).*q(2).*q(3))-x(:,4)

f=@(q,x)exp(abs(sqrt((x(:,1)-q(1)).^2+x(:,2).^2+x(:,3).^2))-(x(:,1)-q(1)))-q(2).*abs(sqrt((x(:,1)-q(1)).^2+x(:,2).^2+x(:,3).^2))

f=@(q,x)exp(abs(sqrt(x(:,1).^2+x(:,2).^2+x(:,3).^2))-x(:,1))-q(1).*abs(sqrt(x(:,1).^2+x(:,2).^2+x(:,3).^2))


>> x=[a b c];

>>
q0=[1    1     1     1     1]; q0=[0.2    0.00637     0.0038     -0.12    0.001];
q=nlinfit(x,zeros(size(x,1),1),f,q0);
disp(num2str(q));
H A B·Ö±ðΪ
3.388     0.39101     -1.5654       3.388


f=@(x,y,z)1.87.*0.11689.*exp(-3.*((x+0.054754).^2./0.53846.^2+y.^2./0.042682.^2+z.^2./0.014206.^2))./(0.53846.*0.042682.*0.014206)-550


f=@(x,y,z)exp(abs(sqrt(x.^2+y.^2+z.^2))-x)-20.7989.*abs(sqrt(x.^2+y.^2+z.^2))


f=@(x,y,z)exp(-1.5654.*(x-sqrt(x.^2+y.^2+z.^2))./(2.*0.39101))-3.388.*3.388.*sqrt(x.^2+y.^2+z.^2)

>> [x,y,z] = meshgrid(-0.4:0.005:0.4,-0.02:0.0004:0.02,-0.005:0.0001:0);
>> v = f(x,y,z);
h = patch(isosurface(x,y,z,v,0));
>> isonormals(x,y,z,v,h)              
set(h,'FaceColor','r','EdgeColor','none');
xlabel('x');ylabel('y');zlabel('z');
alpha(1)   
grid on; view([1,1,1]); axis equal; camlight; lighting gouraud
>>
>> hold on
-c*abs(sqrt(1-(x-d)^2/a^2-y^2/b^2))

f=@(x,y,z)z+0.0032*abs(sqrt(1-x^2/0.08917^2-y^2/0.0032^2))
[x,y] = meshgrid(0:0.002:0.08917,-0.00527:0.0002:0.00527);

f=@(x,y,z)(x+0.0295).^2/0.08917.^2+y.^2/0.00527.^2+z.^2/0.0032.^2-1
[x,y,z] = meshgrid(-0.04:0.002:0.062,-0.005:0.0002:0.005,-0.0032:0.0001:0);
v = f(x,y,z);
h = patch(isosurface(x,y,z,v,0));
>> isonormals(x,y,z,v,h)              
set(h,'FaceColor','r','EdgeColor','none');
xlabel('x');ylabel('y');zlabel('z');
alpha(1)   
grid on; view([1,1,1]); axis equal; camlight; lighting gouraud


x=linspace(-0.04,0.062,50);
y=linspace(-0.005,0.005,50);
[xx,yy]=meshgrid(x,y);
zz=-0.0032.*abs(sqrt(1-xx.^2/0.08917.^2-yy.^2/0.0032.^2))



i=find(yy<=-3&yy>=3);
z1=zz;z1(i)=nan;
surf(xx,yy,z1)


x=linspace(-0.04,0.062,50);
y=linspace(-0.005,0.005,50);
[xx,yy]=meshgrid(x,y);
zz=-0.0032.*abs(sqrt(1-xx.^2/0.08917.^2-yy.^2/0.0032.^2))
surf(xx,yy,zz);shading interp;
pause
i=find(yy<=-0.003|yy>=0.003);
aa=zz;aa(i)=NaN;
g=find(yy>=0.003);
aa=zz;aa(g)=NaN;
surf(xx,yy,aa);shading interp


i=find(yy.^2>=0.000009);
aa=zz;aa(i)=NaN;
surf(xx,yy,aa);shading interp

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SYSWELD123

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data=load('920.txt');
x=data(:,1:2);
y=data(:,3);
beat0=[1,1,1,1]';
[beat,r,j]=nlinfit(x,y,@myfunn,beat0) ÕâÒ»¶ÎÊÇʲôÒâ˼Èö

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2Â¥2017-04-09 21:10:36
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986555360

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3Â¥2017-04-12 22:16:32
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SYSWELD123

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ÒýÓûØÌû:
3Â¥: Originally posted by 986555360 at 2017-04-12 22:16:32
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