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eodb/eodb/events/management/commands/times.py

60 lines
2.3 KiB
Python

import datetime
import matplotlib
import matplotlib.colors
import matplotlib.dates
import matplotlib.pyplot as plt
from django.utils.dateparse import parse_date
from .common import GraphCommand
class Command(GraphCommand):
def add_arguments(self, parser):
super(Command, self).add_arguments(parser)
parser.add_argument('--opacity', type=float, default=0.3)
parser.add_argument('--density', action='store_true')
def handle(self, *args, **options):
event_dates = []
event_times = []
plots = []
for i, (legend, serie) in enumerate(self.get_series(options)):
for commit in serie:
graph_date = self.get_event_datetime(commit, options)
graph_date -= datetime.timedelta(hours=4)
event_dates.append(matplotlib.dates.date2num(graph_date.date()))
event_times.append(graph_date.hour + graph_date.minute / 60. + graph_date.second / 3600)
if options.get('density'):
plot = plt.hist2d(event_dates, event_times, bins=(100, 100),
cmap=plt.cm.jet, norm=matplotlib.colors.LogNorm())
plt.colorbar()
else:
plot = plt.scatter(event_dates, event_times, alpha=options.get('opacity'))
plots.append((legend, plot))
if i > 1:
plt.legend([plot for legend, plot in plots],
[legend for legend, plot in plots])
if options.get('datemin'):
datemin = parse_date(options['datemin'])
else:
datemin = datetime.date(2000, 1, 1) # past
if options.get('datemax'):
datemax = parse_date(options['datemax'])
else:
datemax = datetime.date.today()
plt.gca().xaxis.set_major_locator(matplotlib.dates.YearLocator())
plt.gca().xaxis.set_minor_locator(matplotlib.dates.MonthLocator())
plt.gca().xaxis.set_major_formatter(matplotlib.dates.DateFormatter('%m/%Y'))
if (datemax - datemin).days < 365:
plt.gca().xaxis.set_minor_formatter(matplotlib.dates.DateFormatter('%m/%Y'))
plt.gca().set_ylim([0, 24])
plt.yticks(range(24), list(range(4, 24)) + list(range(0, 4)))
plt.grid()
self.plot(options)