Python Tour.contains_city Examples

Example #1

File: algorithm.py Project: akaptur/genetic-algorithm-experiments

def crossover(parent_1, parent_2):
    """ crossover subsections of parent 1 and left over cities from parent2 """
    from random import random
    
    child = Tour(parent_1.tour_manager)
    
    start_pos = (int) (random() * parent_1.size())
    end_pos = (int) (random() * parent_2.size())
    
    if start_pos > end_pos:
        temp_pos = start_pos
        start_pos = end_pos
        end_pos = temp_pos
    
    for i in range(0, child.size()):
        if i > start_pos and i < end_pos:
            child.set_city(i, parent_1.get_city(i))
    
    for i in range(0, parent_2.size()):
        if not child.contains_city(parent_2.get_city(i)):
            for j in range(0, child.size()):
                if child.get_city(j) is None:
                    child.set_city(j, parent_2.get_city(i))
                    break
    
    return child

Example #2

def crossover(parent_1, parent_2):
    """ crossover subsections of parent 1 and left over cities from parent2 """
    from random import random

    child = Tour(parent_1.tour_manager)

    start_pos = (int)(random() * parent_1.size())
    end_pos = (int)(random() * parent_2.size())

    if start_pos > end_pos:
        temp_pos = start_pos
        start_pos = end_pos
        end_pos = temp_pos

    for i in range(0, child.size()):
        if i > start_pos and i < end_pos:
            child.set_city(i, parent_1.get_city(i))

    for i in range(0, parent_2.size()):
        if not child.contains_city(parent_2.get_city(i)):
            for j in range(0, child.size()):
                if child.get_city(j) is None:
                    child.set_city(j, parent_2.get_city(i))
                    break

    return child

Example #3

    def crossover(self, parent1, parent2):
        child = Tour(len(self._cities_list))

        start_pos = int(random.random() * parent1.tour_size())
        end_pos = int(random.random() * parent1.tour_size())

        for i in xrange(child.tour_size()):
            if start_pos < end_pos and i > start_pos and i < end_pos:
                child.set_city(i, parent1.get_city(i))
            elif start_pos > end_pos:
                if not (i < start_pos and i > end_pos):
                    child.set_city(i, parent1.get_city(i))

        for i in xrange(parent2.tour_size()):
            if not child.contains_city(parent2.get_city(i)):
                for j in xrange(child.tour_size()):
                    if not child.get_city(j):
                        child.set_city(j, parent2.get_city(i))
                        break

        return child

Example #4

File: __init__.py Project: rodolphopivetta/traveling-salesman

    def crossover(self, parent1, parent2):
        child = Tour(len(self._cities_list))

        start_pos = int(random.random() * parent1.tour_size())
        end_pos = int(random.random() * parent1.tour_size())

        for i in xrange(child.tour_size()):
            if start_pos < end_pos and i > start_pos and i < end_pos:
                child.set_city(i, parent1.get_city(i))
            elif start_pos > end_pos:
                if not (i < start_pos and i > end_pos):
                    child.set_city(i, parent1.get_city(i))

        for i in xrange(parent2.tour_size()):
            if not child.contains_city(parent2.get_city(i)):
                for j in xrange(child.tour_size()):
                    if not child.get_city(j):
                        child.set_city(j, parent2.get_city(i))
                        break

        return child