matlab lsqcurvefit 曲线拟合时程序老出错程序如下：function f =curvefun(x,XDATA)f = x(1)*log10(1 + 1/(x(2)+XDATA.^x(3)));主程序为：XDATA = [1,2,3,4,5,6,7,8,9];YDATA = [0.726,0.151,0.055,0.028,0.018,0.009,0.005,0.003,0.003];x0 = [0.1

matlab lsqcurvefit 曲线拟合时程序老出错程序如下：function f =curvefun(x,XDATA)f = x(1)*log10(1 + 1/(x(2)+XDATA.^x(3)));主程序为：XDATA = [1,2,3,4,5,6,7,8,9];YDATA = [0.726,0.151,0.055,0.028,0.018,0.009,0.005,0.003,0.003];x0 = [0.1
matlab lsqcurvefit 曲线拟合时程序老出错
程序如下：
function f =curvefun(x,XDATA)
f = x(1)*log10(1 + 1/(x(2)+XDATA.^x(3)));
主程序为：
XDATA = [1,2,3,4,5,6,7,8,9];
YDATA = [0.726,0.151,0.055,0.028,0.018,0.009,0.005,0.003,0.003];
x0 = [0.1 -1 0.1];
[x,res] = lsqcurvefit(@curvefun,x0,XDATA,YDATA);
错误提示为：
Error using ==> lsqncommon at 101
LSQCURVEFIT cannot continue because user supplied objective function failed with the following error:
Error using ==> mrdivide
Matrix dimensions must agree.
Error in ==> lsqcurvefit at 186[x,Resnorm,FVAL,EXITFLAG,OUTPUT,LAMBDA,JACOB] = ...
Error in ==> test1 at 4[x,res] = lsqcurvefit(@curvefun,x0,XDATA,YDATA);

matlab lsqcurvefit 曲线拟合时程序老出错程序如下：function f =curvefun(x,XDATA)f = x(1)*log10(1 + 1/(x(2)+XDATA.^x(3)));主程序为：XDATA = [1,2,3,4,5,6,7,8,9];YDATA = [0.726,0.151,0.055,0.028,0.018,0.009,0.005,0.003,0.003];x0 = [0.1
%错误在 function 内：
% 1. 向量乘除要加点；
% 2. 除零情况未处理.
function f =curvefun(x,XDATA)
xx=x(2)+XDATA.^x(3);
f = x(1).*log10(1 + 1./(xx+eps*(xx==0)));
% 代码仅供参考