数值拟合

差别

这里会显示出您选择的修订版和当前版本之间的差别。

到此差别页面的链接

--- 数值拟合 [2019/09/26 10:44]
admin 创建
+++ 数值拟合 [2020/02/01 21:41] (当前版本)
@@ 行 6: / 行 6: @@
   fun=@(beta,x)x(:,1)*beta(1)+x(:,2)*beta(2)+x(:,3)*beta(3)+x(:,4)*beta(4)+(1./x(:,5))*beta(5)+beta(6);
   [beta,r,J]=nlinfit(x,y,fun,beta0)
+  coef0=ones(1,8);
+  %fun=@(coef,x_v)(coef(1)*x_v(:,1)+coef(2)*x_v(:,2)+coef(3)*x_v(:,3)+coef(4))/(coef(5)*x_v(:,1)+coef(6)*x_v(:,2)+coef(7)*x_v(:,3)+coef(8));
+  x=[[-89.39151256059473,-137.02560212717475,294.21474132740184];
+  [-89.00640294668285,-136.43527900566508,292.94722809047147];
+  [-92.13506447504953,-141.23111160203118,303.2446077398585];
+  [-88.62171346838292,-135.845599897592,291.6810976480241];
+  [-90.46633114139622,-138.67315969716176,297.75229720565187];
+  [-88.2863231752905,-135.33149005044686,290.5772258653532];
+  [-93.44596784537251,-143.2405565538356,307.5591906902628];
+  [-90.22568043395219,-138.3042733549881,296.96024230454583];
+  [-89.2790025102939,-136.85313880323915,293.84443642486923];
+  [-94.15101574482283,-144.32130359774754,309.8797184385722];
+  [-95.83952722105414,-146.9095728316125,315.43712487434533];
+  [-88.91364351681958,-136.29309082285104,292.6419285057441];
+  [-86.79813484746683,-133.0502902378758,285.67914402989595];
+  [-92.65651132990632,-142.0304220423332,304.9608484334443];
+  [-91.38782426489834,-140.08568921464072,300.78521222409256]];
+  phi=[-89.39151256059473;
+  -89.00640294668285;
+  -92.13506447504953;
+  -88.62171346838292;
+  -90.46633114139622;
+  -88.2863231752905;
+  -93.44596784537251;
+  -90.22568043395219;
+  -89.2790025102939;
+  -94.15101574482283;
+  -95.83952722105414;
+  -88.91364351681958;
+  -86.79813484746683;
+  -92.65651132990632;
+  -91.38782426489834];
+  %testf(coef,[2,3,3])
+  coef=nlinfit(x,phi,testf,coef0);
+  %coef=lsqnonlin('x,phi',coef0,x,phi);

数值拟合.1569465883.txt.gz · 最后更改: 2020/02/01 21:40 (外部编辑)