LSQCURVEFIT gives this error: Not enough input arguments.

I have the following code in two separate .m file in the same folder running on Matlab 2015a:

function Test
I=[1 2 3 5; 2.1 2.9 3 4; 3 3 4.1 4; 5 3.5 5.2 6];
P=[1 2 3 4; 2 3 4 5; 4 5 6 7; 5 6 7 8];
x0=[2, 3]
x = lsqcurvefit(modelP,x0,I,P)
end

function [h]=modelP(x,I)
h=x(1)*I+x(2)*1.5
end

Running test it gives me the following error:

    Error using modelP (line 2)
    Not enough input arguments.

    Error in Test (line 5)
    x = lsqcurvefit(modelP,x0,I,P)

I cannot figure out why. Can someone help me, please?

[mounika]

may be this will help: https://in.mathworks.com/matlabcentral/answers/85061-not-enough-input-arguments

[mounika]

Also, looks like there is a bug reported on this (fix available): https://in.mathworks.com/support/bugreports/271002?s_tid=answers_rc2-2_p5_MLT

Answer 1

[Vladimiro Boselli]

I solved it calling the function as:

lsqcurvefit(@(x0, I) modelP(x0, I),x0,I,P)

This is not very clear in the documentation. Thanks anyway.