How to prevent a program in matlab to ask the user enter parameters value several times

I have a problem about deferential evolution program. when i run the code, the program ask to input parameters data (as list ) and when i enter my data the program re ask me to enter the data again by showing the input list again. how can i make the program save my input data just one time for all iterations?

Answer 1

[Ameer Hamza]

If you are using input() function in your code to ask for user input then you should either replace input() statements with the constant values in the beginning. If the input() statements are written inside a MATLAB function then you can consider removing them and pass the parameter as input to the function.

[Muna Elayyan]

I am using the DE code developed by Rainer Storn, this program is to find minimum value for a function (optimization). there are 4 mat files to run this program. the first file is deopt.m, the second is objfun.m, the third is rundeopt.m, and finally the plot.m file. I have to code my function inside objfun.m file to optimize, but my function asking the user to enter some values before starting optimization and this was coded inside the function(objfun.m file). when i run the function by using rundeopt.m. the first thing happen is the list appears to enter some input data, when I finish entering, the list appear again to enter the data again and the optimization will never start. how to prevent that?

[Ameer Hamza]

If you can share the code, it will be easier to identify the issue and suggest the solution.

[Muna Elayyan]

here are the DE for optimization code files.

[Ameer Hamza]

The problem is happening because you objfun() is being called several times. It is not a good idea to ask the user for parameter values inside this function. There are following things which you can do

• You can fix the values yourself

k1 = 1;
k2 = 2;
...
...

• You can ask for input dialog box in Rundeopt.m file and make it as part of S_struct variable. Then use it in objfun() like this

k1 = S_struct.k1;
k2 = S_struct.k2;
...
...