|
|
【答案】应助回帖
★ ★
余泽成(金币+2, 程序强帖+1): 谢谢参与应助！ 2011-06-04 19:30:05
yangger(金币+3): 非常感谢~~@ 2011-06-17 19:02:33
或者你仿照这个代码改改
function y = fitme_diheral( c,phi )
% A1=c(1);
% k1=c(2);
% x1=c(3);
% kBT=443*8.3145/1000;
aa=c(1);
bb=c(2);
cc=c(3);
dd=c(4);
ee=c(5);
ff=c(6);
psi=(phi-pi);
% y=0.5*(f1*(1+cosx)+f2*(1-cos(2*x))+f3*(1+cos(3*x))+f4*(1-cos(4*x)));
y=aa-bb.*cos(psi)+cc.*(cos(psi)).^2-dd.*(cos(psi)).^3+ee.*(cos(psi)).^4-ff.*(cos(psi)).^5;
end
clear;
clc;
load diherals.txt;
data=diherals;
%%avge the theta<0 and theta>0
a=data(1:180,2);
b=data(361:-1:182,2);
avg=0.5*(a+b);
data(1:180,2)=avg;
data(361:-1:182,2)=avg;
p=[24.5156799887984,-1.90007004205358,-1.66217137679272,3.06265999012061,2.33333792446086,-2.48454162655902;];
% data(:,2)=acf(data(:,2));
data3=data;
data3(:,1)=data3(:,1)*pi/180;
for i=1:50
% [p,res]=lsqcurvefit('dihe',p,data3(:,1),data3(:,2));
[p,res]=lsqcurvefit('fitme_diheral',p,data3(:,1),data3(:,2));
%注意修改函数名dihe
plot(data3(:,1),data3(:,2),'ro');
hold on
plot(data3(:,1),fitme_diheral(p,data3(:,1)));
%注意修改函数名dihe(p,data3(:,1)
end |
|
回复此楼
点击这里搜索更多相关资源