Last active
October 29, 2019 06:04
-
-
Save kpsychas/e16dd5dda09fbcf59b9ee66806d4bf06 to your computer and use it in GitHub Desktop.
Generic Experiment with plot and save option
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
""" | |
Generic example of experiment that compares two methods | |
COS, SIN in two different experiments EXPERIMENT1, EXPERIMENT2 | |
Experiments can be lengthy so one can choose to SAVE the | |
files so that the plots can be generated again when the | |
appropriate RUNTAG is set and the PLOT program option is chosen. | |
""" | |
import os | |
import matplotlib.pyplot as plt | |
import numpy as np | |
class Method: | |
COS = "cosine" | |
SIN = "sine" | |
class Program: | |
EXPERIMENT1 = 1 | |
EXPERIMENT2 = 2 | |
PLOT = 3 | |
RUNTAG = 'run1' | |
FILETAG = 'experiment' | |
OUTPUTFOLDER = 'outputs' | |
STEPS = 5000 | |
STEP_SIZE = 1e-3 | |
SAVE = True | |
PROGRAM = Program.EXPERIMENT1 | |
def plot_result(y, label): | |
plt.plot(y, label=label) | |
class NameGen(object): | |
def __init__(self, filetag, output_folder): | |
try: | |
os.makedirs(output_folder, exist_ok=True) | |
except OSError: | |
raise | |
self.output_folder = output_folder | |
self.filetag = filetag | |
def get_output_prefix(self, exptag, label): | |
return os.path.join(self.output_folder, | |
'{}_{}{}'.format(self.filetag, label, exptag)) | |
def get_output_filename(self, exptag, label, ext): | |
return '{}.{}'.format(self.get_output_prefix(exptag, label), ext) | |
def save_plot(self, tag, label='', dpi=300, ext='png'): | |
plt.draw() | |
plt.savefig(self.get_output_filename(tag, label, ext), dpi=dpi) | |
class Simulator(object): | |
def __init__(self, namegen, runtag, save): | |
self.namegen = namegen | |
self.runtag = runtag | |
self.save = save | |
def run(self, func, steps, step_size, label): | |
y = func(np.arange(steps) * step_size) | |
plot_result(y, label=label) | |
if self.save: | |
npz_filename = self.namegen.get_output_filename(self.runtag, label, 'npz') | |
np.savez(npz_filename, y=y) | |
def load(self, label): | |
npz_filename = self.namegen.get_output_filename(self.runtag, label, 'npz') | |
y = np.load(npz_filename)['y'] | |
plot_result(y, label=label) | |
def finalize_plot(self): | |
plt.legend(loc='best', prop={'size': 12}) | |
plt.xlabel('Simulation steps') | |
plt.ylabel('Output') | |
self.namegen.save_plot(self.runtag, "") | |
plt.clf() | |
def factory(method_name, **kwargs): | |
if method_name == Method.COS: | |
t = kwargs.pop('term', 0) | |
return lambda x: np.cos(x + t) | |
elif method_name == Method.SIN: | |
f = kwargs.pop('factor', 1) | |
return lambda x: np.sin(f * x) | |
else: | |
raise ValueError("Method: '{}' is not valid.".format(method_name)) | |
def main_example1(simulator): | |
for method_name in [Method.COS, Method.SIN]: | |
myfunc = factory(method_name) | |
simulator.run(myfunc, STEPS, STEP_SIZE, label=method_name) | |
def main_example2(simulator): | |
for method_name in [Method.COS, Method.SIN]: | |
myfunc = factory(method_name, factor=2, term=1) | |
simulator.run(myfunc, STEPS, STEP_SIZE, label=method_name) | |
def main_plot(simulator): | |
for label in [Method.COS, Method.SIN]: | |
simulator.load(label) | |
if __name__ == '__main__': | |
mynamegen = NameGen(FILETAG, OUTPUTFOLDER) | |
mysimulator = Simulator(mynamegen, RUNTAG, SAVE) | |
if PROGRAM == Program.EXPERIMENT1: | |
main_example1(mysimulator) | |
elif PROGRAM == Program.EXPERIMENT2: | |
main_example2(mysimulator) | |
elif PROGRAM == Program.PLOT: | |
main_plot(mysimulator) | |
mysimulator.finalize_plot() |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment