9楼: Originally posted by 512095518 at 2016-08-26 16:56:57
接着上面的代码继续写
yn = f(c,x);%计算得到拟合方程中x所对应的y值
r = corrcoef(y,yn);%计算相关系数
R = r(2);%相关系数R
R_square = R^2;%计算R平方

其他参数，你查统计学方面的数据，都是比较你原始数 ...

2楼: Originally posted by hellosu at 2016-02-29 15:40:38
x=;
y=;
f=@(c,x) 1-((c(3)*x)^c(2)/(1+(c(3)*x)*c(2)))^c(1);
c0=;
=lsqcurvefit(f,c0,x,y);
plot(x,y,'.-',x,f(c,x),'r:x')
legend('原始数据','拟合数据')...

3楼: Originally posted by liangyufei0 at 2016-02-29 16:03:15
首先感谢hellosu应助！
但程序运行出现如下错误，新手，不知如何解决，还请高手再次相助！
??? Error using ==> mpower
Matrix must be square.

Error in ==> @(c,x)1-((c(3)*x)^c(2)/(1+(c(3)*x)^c(2 ...