1: But further in the constraints section i need decision variables as a matrix so i can write my constraints. ( Because they also have summation operation).
You are free to reshape() your variables and/or assign them to separate variables within inside the body of your objective and nonlinear constraint functions.
2: another point is that i have another decsision variable which is not in the objective function directly but in the constraints. This variable is dependent to the x variable. Where the column summation of x is equal to y(j). So i need my x's to be a matrix not an row vector.
x and y must be concatenated together and organized as a row vector when passed to your obejctive and constraints, but again, you can reshape and reorganize them any way you wish inside the workspace of those functions.
3: My objective function does not works! If i just write my variables and parameters as a row vector it gives' not enough input argument error' ! But if i wirte them as matrix's with dimensions 36x36 it gives 'Index in poisiton 1 exceeds array bounds. Index must not exceed 1' error. Just unable to do it right!!!
Your functions should have only one input argument, a row vector containing both x and y.
4: Also my decsision variable should be binary (1 or 0). I have searched this topic but couldnt find any useful information sadly.
Use the intcon input argument to force certain variables to be integers. Use the lb and ub argument to force them to lie between 0 and 1.
