I think, simplest way is "global" option

Here global variable can not be solution due to change in variable during each iteration. is there any other solution available.

An alternative solution to global variables is the Singleton programming pattern:

http://en.wikipedia.org/wiki/Singleton_pattern

Here you find an example of implementation in Matlab:

http://www.mathworks.it/matlabcentral/fileexchange/24911-design-pattern-singleton-creational

You can access a Singleton object from any point in your code by calling a static method of the class.

However, maybe in your case there could be a better solution with a redesign of the functions. Could you explain more in detail your problem?

Dear Simone,

I am using Genetic Algorithm tool of MATLAB and In which I have a fitness function and constrain function.

Here I am modifying value of variable B in constrain function (say initial value B=[0 1 1 0 1] and modified value B=[1 0 01 1] or similar generated by another function within constrain ) and I need to call that to fitness function without running constrain function or any other function.

If I need to run this function for calling B, value of B will changed.

Using a global variable would definitely be the quickest solution here, why do you say it cannot be used?

Dear Simone Scardapane,

global variable variable does not change with iteration, hence can't be used.

Perfect solution, I got

We can save variable or file as follow file name is NEW_B.mat, variable is B

save('NEW_B.mat','B');

and This can called by following command.

N = load('NEW_B.mat');

B = N.B

Similar can be done by xlswrite but It is time consuming method.

Thanks for all valuable suggestions.

Maybe you have already solved this. Anyway I think its better if you use the commands evalin and assignin instead of save and load.

For example in the first function you can say

assignin('base','B',B); to assign to base workspace the variable B,

and then you can import the B variable into your second function using

B=evalin('base','B');

One thing to note is that if you have a variable with the same name e.g., B in base workspace will be overwritten

Thank You dear George Kourakos, I will use it