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Merged
merged 2 commits into from
Jun 15, 2021
Merged

Update pygad.py #47

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ccfe679
Update pygad.py
rengel8 Jun 14, 2021
517612c
Two changes in the plot_result() method.
ahmedfgad Jun 15, 2021
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10 changes: 8 additions & 2 deletions pygad.py
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Original file line number Diff line number Diff line change
Expand Up @@ -2530,7 +2530,7 @@ def best_solution(self, pop_fitness=None):

return best_solution, best_solution_fitness, best_match_idx

def plot_result(self, title="PyGAD - Iteration vs. Fitness", xlabel="Generation", ylabel="Fitness", linewidth=3):
def plot_result(self, title="PyGAD - Iteration vs. Fitness", xlabel="Generation", ylabel="Fitness", linewidth=3, save_dir=None):

"""
Creates and shows a plot that summarizes how the fitness value evolved by generation. Can only be called after completing at least 1 generation. If no generation is completed, an exception is raised.
Expand All @@ -2540,6 +2540,7 @@ def plot_result(self, title="PyGAD - Iteration vs. Fitness", xlabel="Generation"
xlabel: Label on the X-axis.
ylabel: Label on the Y-axis.
linewidth: Line width of the plot.
save_dir: Directory to save the figure.

Returns the figure.
"""
Expand All @@ -2555,7 +2556,12 @@ def plot_result(self, title="PyGAD - Iteration vs. Fitness", xlabel="Generation"
matplotlib.pyplot.title(title)
matplotlib.pyplot.xlabel(xlabel)
matplotlib.pyplot.ylabel(ylabel)

if not save_dir is None:
matplotlib.pyplot.savefig(fname=save_dir,
bbox_inches='tight')
matplotlib.pyplot.show()

return fig

def save(self, filename):
Expand Down Expand Up @@ -2583,4 +2589,4 @@ def load(filename):
raise FileNotFoundError("Error reading the file {filename}. Please check your inputs.".format(filename=filename))
except:
raise BaseException("Error loading the file. Please check if the file exists.")
return ga_in
return ga_in