The Matlab version is 2012b. I am trying using the built-in GA functionality through the Optimization Tool GUI on Matlab. I want to use bit string chromosome with a given length (for example L=24) and a given way to map one chromosome to a real number (suppose the objective function is one dimensional). I have been searching the documentation for some time but haven't found anything useful. Can someone give me a clue how to customize the chromosome length and the chromosome-to-real_number mapping?