How to get a single (or a list) of individuals from a population?

[Paulo Almeida]

Hi,

  In the first place, I would like to congratulate the authors of pyevolve for the nice module and documentation available. Keep working, you are really making the difference.

  For educational/didatical purposes, I am solving a very simple problem using GSimpleGA class and would like to get, for each generation, the raw values (or contents) of each individual from the population at a particular generation, and print them out. I could not find a method to give me that. So far, I can only get the best individual from the population.

  Is there a way to do this? Thank you for your support.

Cheers,

  Paulo

[Christian S. Perone]

Hello Paulo, note that the population object has the iteration protocol impelemented, so you can easily do something like this:

population = ga_engine.getPopulation()

for individual in population:

    # ... do what you need with the individual

Please see the Example #5.

Yours,

- Christian S. Perone

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[Paulo Almeida]

Hi Christian,

  Thx for your feedback.

  I knew about getPopulation(), but did not realize, until now, how to find the appropriate method to return the binary value of each individual. Of course, I was looking in the wrong place, not the GPopulation class but, in my case, the G1DBinaryString class. There, I found the method getBinary(), which does what I need.

  Just for the records, to print individual values I am using:

pop = ga_engine.getPopulation()
for indiv in pop:
    ...:     print indiv.getBinary()
 
Cheers, Paulo

[Christian S. Perone]

Thanks for posting back the answer of your problem here Paulo.