Printing results when a value is an Integer results in a binary string being printed about platypus HOT 7 CLOSED

Hello @mhucka, you can use decode(value) and encode(value) to decode Binary representation [True, False, ....] to Integer; both are included in the class Type of platypus

This is a small example:

first_variable = algorithm.result[0].variables[0]
problem.types[0].decode(first_variable)

If your integer type is: Integer(-1,1), it will be encoded to 2 bits [X,Y], for instance -1, will be encoded : [False, False] , 0 [False True], 1 [True, False]. This is the explanation.

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structureoptimiser.types[0].decode(first_variable) doesn't work because structureoptimizer is the class itself and not an instance of the class.

Try algorithm.problem.types[0].decode(first_variable).

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Thanks, that helped! I got it to work now.

Is this approach (using decode) the way it must be done? IMHO it would be more convenient and easier to use if the objects in the result field had Python __repr__ or __str__ functions that did the right thing for printing Integer values. Perhaps this is something the developers could investigate for a future release?

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I agree with mhucka. Also because it is not consistent with the representation that we are given when addressing Continuous problems.

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@manuparra
@mhucka

(all thing is in jupyter)
Thank you for suggestion but when I have used

first_variable = algorithm.result[0].variables[0]
Problem.types[0].decode(first_variable)

---------------------------------------------------------------------------
AttributeError                            Traceback (most recent call last)
<ipython-input-145-282c3f73daa6> in <module>
      1 first_variable = algorithm.result[0].variables[0]
----> 2 Problem.types[0].decode(first_variable)

AttributeError: type object 'Problem' has no attribute 'types'

And I think it is because of using :

class structureoptimiser(Problem):
    def __init__(self):
            super(structureoptimiser, self).__init__(…...

Then I have changed it to :

first_variable = algorithm.result[0].variables[0]
structureoptimiser.types[0].decode(first_variable)

but I have gotten:

----------------------------------------------------------------------------
AttributeError                            Traceback (most recent call last)
<ipython-input-138-4dc9e9933591> in <module>
      1 first_variable = algorithm.result[0].variables[0]
----> 2 structureoptimiser.types[0].decode(first_variable)

AttributeError: type object 'structureoptimiser' has no attribute 'types'

note :
structureoptimiser.__mro__

(__main__.structureoptimiser, platypus.core.Problem, object)

from platypus.

structureoptimiser.types[0].decode(first_variable) doesn't work because structureoptimizer is the class itself and not an instance of the class.
Try algorithm.problem.types[0].decode(first_variable).

Thank you very much, you are right. it's worked.(Really thank you for time you spent and time you saved for me)

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This issue is stale and will be closed soon. If you feel this issue is still relevant, please comment to keep it active. Please also consider working on a fix and submitting a PR.

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