getting an error " not enough input arguments"

error is

>>Error using ga (line 342)

Not enough input arguments.

Caused by: Failure in initial user-supplied nonlinear constraint function evaluation.

I guess it is because of the way I have defined functions. I have three function files.My functions are defined as :FIRST FUNCTION IS DEFINED AS

    function Dos=Databeam(x)
% Units: KN & m
m=2;n=3;
x=mapvariablesbeam(x);

 SECOND FUNCTION IS DEFINED AS

    function x = mapvariablesbeam(x)

THIRD FUNCTION IS DEFINED AS

    function [c, ceq] = ga_beamconstraints(x,Dos)
% Problem parameters
Lb=2;  %in m
deltaMax =Lb/325 ; % Maximum end deflection in m
sigmaMax =130e3 ; % Maximum stress in each section of the beam in kN/m
x = mapvariablesbeam(x);
% Constraints on the stress 
momax=Dos.momax;

momax variable is created in first function file and I need to access it in this function file so I have used Dos.momax

[Image Analyst]

http://www.mathworks.com/matlabcentral/answers/6200-tutorial-how-to-ask-a-question-on-answers-and-get-a-fast-answer

And the solution to everything: http://blogs.mathworks.com/videos/2012/07/03/debugging-in-matlab/

Answer 1

[Joseph Cheng]

This sounds like the perfect spot to use the editor's debug abilities. it error that matlab gives you should indicate what where the error is in what line. Since you didn't supply any code it'd just be speculation that you didn't implement the beamconst function to take the structure correctly. put a breakpoint and see what in the line is breaking down and not defined.