def day_both_calc(dayvalues):
day, temp_avg, temp_amp, temp_min, temp_delta, latitude, longitude, elevation, pressure, wavelengths = dayvalues
spectra = Spectra(latitude=latitude,
longitude=longitude,
elevation=elevation,
pressure=pressure,
wavelengths=wavelengths)
rvals = []
sunrise_dt, sunset_dt = util.get_sunrise_sunset(latitude, longitude, day)
# offset the sine so that the coldest time of the day is 30m after sunrise
# see http://cliffmass.blogspot.com.au/2011/01/what-is-coldest-time-of-day.html
sr_offset = 360 - (sunrise_dt.hour * 60.0 + sunrise_dt.minute + 30.0)
for d in daterange(day, minutes=1):
# this was wrong....
minute = d.minute + (d.hour * 60.0)
# temp = tavgamp * np.sin(minute * 7.27220521664304e-05 * 60.0)
temp = temp_avg - temp_amp * np.sin((minute + sr_offset) * daily_freq)
rh = 100 * np.exp((17.625 * temp_min) / (243.04 + temp_min)) / \
np.exp((17.625 * temp) / (243.04 + temp))
tao = 0.7
if abs(latitude / np.pi * 180) < 60:
if temp_delta <= 10 and temp_delta != 0:
tao /= 11.0 - temp_delta
th = np.array([temp, rh], dtype=np.float64)
if sunrise_dt <= d <= sunset_dt:
rvals.append(
np.append(th, spectra.calc_vis_spectral(d, temp, rh, tao)))
else:
rvals.append(
np.append(th, np.append(0, np.zeros_like(wavelengths))))
return rvals
def get_operating_hours():
today = datetime.now()
operating_hours = 0
for single_date in daterange(START_DATE, today):
day = datetime.fromtimestamp(time.mktime(single_date.timetuple()))
sun_rise_set = get_sunrise_sunset(LAT, LON, day)
daily_operating_hours = sun_rise_set[1] - sun_rise_set[0]
operating_hours += divmod(daily_operating_hours.total_seconds(), 3600)[0]
return 1.05 * operating_hours # adding 5% overhead
def get_operating_hours():
today = datetime.now()
operating_hours = 0
for single_date in daterange(START_DATE, today):
day = datetime.fromtimestamp(time.mktime(single_date.timetuple()))
sun_rise_set = get_sunrise_sunset(LAT, LON, day)
daily_operating_hours = sun_rise_set[1] - sun_rise_set[0]
operating_hours += divmod(daily_operating_hours.total_seconds(), 3600)[0]
return 1.05 * operating_hours # adding 5% overhead
def calc_temp_humidity_spline(self):
"""
calculates a temperature humidity spline with deltat.
returns a spline of [temp[:], humidity[:], deltat[:]]
"""
d = self.start
xx = list()
ff = [[], []]
while d < self.end:
# increment time by one day
d += datetime.timedelta(days=1)
# calculate sr ss
sunrise_dt, sunset_dt = util.get_sunrise_sunset(
self.latitude, self.longitude, d)
sunrise = solar.get_solar_time(self.longitude, sunrise_dt)
sunset = solar.get_solar_time(self.longitude, sunset_dt)
doy = d.timetuple().tm_yday
temp, deltat = self.monthly_temperature_spline(doy)
deltat = abs(deltat)
mintemp, maxtemp = temp - deltat, temp + deltat
t_amplitude = (maxtemp - mintemp) / 2.0
t_avg = (mintemp + maxtemp) / 2.0
if self.use_ces:
tomorrow = d + datetime.timedelta(hours=24)
tdoy = tomorrow.timetuple().tm_yday
tomorrow_temp, tomorrow_deltat = self.monthly_temperature_spline(
tdoy)
tomorrow_mintemp = tomorrow_temp - abs(tomorrow_deltat)
for m in range(1440):
t = self.ces_temp_fit(m, mintemp, maxtemp,
tomorrow_mintemp, sunrise, sunset)
ff[0].append(t)
ff[1].append(self.relative_humidity(mintemp, t))
xx.append(doy + (m / 1440))
else:
for m in range(1440):
# assume daily fluctuation mimics sinewave...period 24 h
# freq = 2 * pi / 86400 sec = 7.27 E-5 sec-1
t = t_avg - t_amplitude * np.sin(
m * 7.27220521664304e-05 * 60.0)
ff[0].append(t)
ff[1].append(self.relative_humidity(mintemp, t))
xx.append(doy + (m / 1440))
xx.append(xx[-1] + (1 / 1440))
ff[0].append(ff[0][0])
ff[1].append(ff[1][0])
ff = np.array(ff)
ff = np.swapaxes(ff, 0, 1)
xx = np.array(xx)
return CubicSpline(xx, ff)
def sunrise_sunset(time, place = sevilla):
return get_sunrise_sunset(place.latitude, place.longitude, time)
def test_util_get_sunrise_sunset_raise_error(self):
with self.assertRaises(NoTimeZoneInfoError):
util.get_sunrise_sunset(self.lat, self.lon, self.unaware)
def test_util_get_sunrise_sunset_no_error(self):
try:
util.get_sunrise_sunset(self.lat, self.lon, self.aware)
except NoTimeZoneInfoError:
self.fail("""'NoTimeZoneInfoError' should not be raised \
as 'datetime' object is tz-aware.""")