def time_chart(user, weeks, period=1):
"""Get information from a specified interval."""
date_range = weeks * 7 // period
period = timedelta(days=period)
# 'now' is technically tomorrow at 0:00, so that today's smokes have
# somewhere to go.
now = datetime.today().replace(hour=0, minute=0, second=0, microsecond=0) \
+ timedelta(days=1)
past = now - timedelta(weeks=weeks)
data = DBSession.query(Cigarette).filter_by(user=user.user_name) \
.filter(Cigarette.date >= past).all()
# pre-fill the dictionary with zeroes
freq_data = {(past + x*period): 0 for x in range(date_range)}
for datum in data:
distance = (datum.date - past).total_seconds() // period.total_seconds()
freq_data[past + (int(distance) * period)] += 1
if not freq_data:
chart = 'No data to display.'
else:
chart = DateY(LineConfig())
chart.add(user.display_name, sorted(freq_data.items()))
chart = chart.render(is_unicode=True)
return chart
def graph_uptime(record_files):
chart = DateY(BaseConfig)
for name, record_list in sort_domains(record_files.items()):
values = []
up, down = timedelta(), timedelta()
last = None
for record in record_list:
if last:
down += record[1] - last
values.append((record[1],
100 * up.total_seconds() /
(up+down).total_seconds()))
else:
values.append((record[1], 100))
last = record[1] + record[0]
up += record[0]
values.append((record[1] + record[0],
100 * up.total_seconds() /
(up+down).total_seconds()))
chart.add(name, values)
return chart.render()
