Not enough input arguments in lsqcurvefit function

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xdata is 744x1 double vector

ydata is 744x1 double vector

function consists of

function ydata=calcor(k,xdata)
ydata=1-(1-k)*(xdata.^k);
end 

x0=[0 0]

lsqcurvefit is written like below

k= lsqcurvefit(calcor,x0,xdata,ydata);

it keeps giving me not enough input argument error.

Not enough input arguments.

Error in calcor (line 2)

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Answer 1

Torsten 2023-4-5

在 MATLAB Online 中打开

1 个投票

x0 = 0

not

x0 = [0 0]

since k seems to be a scalar as you treat it in "calcor".

Further I guess

k= lsqcurvefit(@calcor,x0,xdata,ydata);

instead of

k= lsqcurvefit(calcor,x0,xdata,ydata);

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Batula 2023-4-5

Thanks for helping

@calcor helped however it is giving me another error message. Could you please check it?

Torsten 2023-4-5

Could you please check it?

I will, but where is it ?

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Not enough input arguments in lsqcurvefit function

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