Not enough input arguments

I am not understanding what is wrong with line 10, which is [a,b] = size(t);

function [ diffVec ] = GlobChiSq( p, t, Co, Diff, y )
% For loop that creates difference vector that lsqcurvefit uses to optimize
% p

%This equation has four parameters: p1, p2, p3, and p4. p1 is k1 (on rate
%constant), p2 is k2 (off rate constant), p3 is the length of the unstirred
%layer (L), and p4 is iN (total current).

l = 0;

[a,b] = size(t);

for i = 1:a

      for j = 1:b

          [c,d] = size(concentration);

          for k = 1:d

             modelFun = p(4) * ((1 - calcPinf(p,t(i,j,k),Co(k),Diff)) * exp(-calcLambda(p,t(i,j,k),Co(k),Diff) * t(i,j,k)) + calcPinf(p,t(i,j,k),Co(k),Diff)); 

             l = l+1; 

             diffVec(l) = y(i,j) - modelFun(i,j);

          end

      end

end

end

Answer 1

[Star Strider]

You are calling it as your objective function to lsqcurvefit. The input arguments are specific in all the curve fitting functions.

You need to call it as:

[p,resnorm] = lsqcurvefit(@(p,t) GlobalChiSq( p, t, Co, Diff, y ), startingVals, x, y lb, ub, options)