Error: Conversion to double from database is not possible?

I coded a function whose name is database for fitness function of genetic algorithm tool. But when I used this function to run GA, it showed this error message:"Conversion to double from database is not possible" Since I am a new user, I cannot find the solution to this problem. Anyone can give me some advice? Thank you very much.

Answer 1

[Star Strider]

When I type:

which database -all

in the Command Window, I get:

database is a built-in method  % schema.package method

Naming your function ‘database’ is termed ‘overshadowing’, that is naming your variables or functions the same as existing built-in MATLAB functions. This creates confusion for MATLAB. It is best not to overshadow existing functions with your own functions or variable names.

The solution is to name your ‘database’ function something else, again avoiding existing MATLAB function names.

[Rao]

Thank you. I changed the name to "mydatabase" and I got the answer.

[Star Strider]

My pleasure!