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Error using lsqcurvefit (line 248)
Function value and YDATA sizes are not equal.

Error in Simulation_20150310 (line 17)
Factor=lsqcurvefit('delta_sigma',factor0,Data(1:294,1),Data(1:294,2));


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function f=delta_sigma(B,xdata)

h=6.626*10^(-34);        %µ¥Î»ÊÇJ¡¤S
e=1.6*10^(-19);             %µ¥Î»ÊÇC
G0=e^2/pi/h;

n=length(xdata);
for i=1:n  
f(i)=(-psi(1/2+B(1)/xdata(i))+ ...
    3/2*psi(1/2+(B(2)+B(3))/xdata(i))- ...
   1/2*psi(1/2+B(2)/xdata(i))- ...
   log((B(2)+B(3))/B(1))- ...
   1/2*log((B(2)+B(3))/B(2)));
end

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clear all
clc

load Data.mat

figure
plot(Data(:,1),Data(:,2),'*'),hold on

h=6.626*10^(-34);        %µ¥Î»ÊÇJ¡¤S
e=1.6*10^(-19);             %µ¥Î»ÊÇC
G0=e^2/pi/h;

factor0=[3.1,0.5,1]';
Factor=lsqcurvefit('delta_sigma',factor0,Data(1:294,1),Data(1:294,2));

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Error using lsqcurvefit (line 248)
Function value and YDATA sizes are not equal.

Error in Simulation_20150310 (line 17)
Factor=lsqcurvefit('delta_sigma',factor0,Data(1:294,1),Data(1:294,2));

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