Genetic Algorithm and Direct Search Toolbox

Output Function Options

Output functions return output from the genetic algorithm to the command line at each generation.

• History to new window (@gaoutputgen) displays the history of points computed by the algorithm in a new window at each multiple of Interval iterations.
• Custom enables you to write your own output function.

To specify the History to new window output function at the command line, set options as follows:

• options = gaoptimset('OutputFcns', @gaoutputgen)
  

Structure of the Output Function

The function ga passes the following input arguments to the output function at each generation:

• options -- Options structure
• state -- Structure containing information about the current population. The State Structure describes this structure.
• flag -- String indicating the current status of the algorithm as follows:
• 'init' -- Initial stage
• 'iter' -- Algorithm running
• 'done' -- Algorithm terminated

The output function returns the following arguments to ga:

• state
• optnew -- Options structure modified by the output function. This argument is optional.
• optchanged -- Flag indicating changes to options in optnew

Migration Options

Stopping Criteria Options

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