# morning (civil) twilight obs.twilight_morning_civil(time_obs) # morning (astronomical) twilight obs.twilight_morning_astronomical(time_obs) # what is the moon illumination? # returns a float, which is percentage of the moon illuminated obs.moon_illumination(time_obs) # what is the moon altitude and azimuth? obs.moon_altaz(time_obs) # Other sun-related convenience functions: obs.noon(time_obs, which='nearest') obs.midnight(time_obs, which='nearest') # ============== # Target objects # ============== ''' A target object defines a single observation target, with coordinates and an optional name. ''' from astroplan import FixedTarget # Define a target. from astropy.coordinates import SkyCoord t1 = FixedTarget(name='Polaris',
def component_compare_daily_all(dataFrame, outliers=None):
componentName = 'H'
if dataFrame.empty:
print('No data is available to plot')
return
import pytz
import datetime
import matplotlib.dates as mdates
import helper_astro as astro
from astroplan import Observer
from datetime import datetime
from astropy.time import Time
import astropy.units as u
import matplotlib.pyplot as plt
print('Daily comparison graph is being generated.')
dayDateTimeObj = dataFrame['Date_Time'][
0] # just get one of elements from 'Date_Time' list. Will be used to for certian calculations
localTZ = dayDateTimeObj.tzinfo
subaru = Observer(longitude=80.07 * u.deg,
latitude=6.97 * u.deg,
elevation=0 * u.m,
name="Subaru",
timezone=localTZ)
noonTimeUTC = subaru.noon(Time(dayDateTimeObj),
which='next').to_datetime(pytz.timezone('UTC'))
print('Local noon time (utc) : ' +
noonTimeUTC.strftime('%Y-%m-%d %H:%M:%S %z'))
noonTimeLocal = subaru.noon(Time(dayDateTimeObj),
which='next').to_datetime(localTZ)
print('Local noon time (local time zone) : ' +
noonTimeLocal.strftime('%Y-%m-%d %H:%M:%S %z'))
sunRiseTimeLocal = subaru.sun_rise_time(Time(dayDateTimeObj),
which="next").to_datetime(localTZ)
sunRiseTimeLocalTwilight = subaru.sun_rise_time(Time(dayDateTimeObj),
which="next",
horizon=-6 *
u.deg).to_datetime(localTZ)
sunSetTimeLocal = subaru.sun_set_time(Time(dayDateTimeObj),
which='next').to_datetime(localTZ)
print('Sun rise time (local time zone) : ' +
sunRiseTimeLocal.strftime('%Y-%m-%d %H:%M:%S %z'))
print('Sun set time (local time zone) : ' +
sunSetTimeLocal.strftime('%Y-%m-%d %H:%M:%S %z'))
fig, ax = plt.subplots()
ax.plot(dataFrame['Date_Time'],
dataFrame[componentName],
label=componentName + ' Comp')
hours = mdates.HourLocator(interval=1)
h_fmt = mdates.DateFormatter('%d %H:%M:%S', localTZ)
ax.xaxis.set_major_locator(hours)
ax.xaxis.set_major_formatter(h_fmt)
if outliers is not None:
y_min, y_max = ax.get_ylim()
outliers[componentName] = y_min
kw = dict(marker='o', linestyle='none', color='r', alpha=0.3)
ax.plot(outliers[componentName],
label=componentName + '-outlier',
**kw)
moon_phase = astro.moon_get_moon_phase(dataFrame['Date_Time'][0])
t = ax.text(0.03,
0.9,
'Lunar phase {:3.0f}%'.format(moon_phase * 100),
horizontalalignment='left',
verticalalignment='center',
transform=ax.transAxes)
t.set_bbox(dict(facecolor='red', alpha=0.5, edgecolor='red'))
minValueIndex = dataFrame[componentName].idxmin()
maxValueIndex = dataFrame[componentName].idxmax()
print('Max value : ' + str(dataFrame.loc[maxValueIndex][componentName]) +
', at : ' + dataFrame.loc[maxValueIndex]['Date_Time'].strftime(
'%Y-%m-%d %H:%M:%S %z'))
print('Min value : ' + str(dataFrame.loc[minValueIndex][componentName]) +
', at : ' + dataFrame.loc[minValueIndex]['Date_Time'].strftime(
'%Y-%m-%d %H:%M:%S %z'))
yAxisMiddle = dataFrame.loc[minValueIndex][componentName] + (
(dataFrame.loc[maxValueIndex][componentName] -
dataFrame.loc[minValueIndex][componentName]) / 2)
noonTimeRow = dataFrame[(dataFrame['Date_Time'] == noonTimeLocal.replace(
second=0, microsecond=0))]
print('Noon time value of ' + componentName +
'-Component {:6.3f}'.format(noonTimeRow[componentName][0]))
ax.axvline(x=noonTimeRow['Date_Time'][0], ls='--', c='orange')
ax.text(noonTimeRow['Date_Time'][0],
yAxisMiddle,
'Local noon',
rotation=90,
ha='left',
va='center')
ax.axvline(x=sunRiseTimeLocal, ls='--', c='gray')
ax.axvline(x=sunRiseTimeLocalTwilight, ls='--', c='gray')
ax.text(sunRiseTimeLocal,
dataFrame.loc[minValueIndex][componentName],
'Sun rise',
rotation=90,
ha='left',
va='bottom')
ax.axvline(x=sunSetTimeLocal, ls='--', c='gray')
ax.text(sunSetTimeLocal,
dataFrame.loc[minValueIndex][componentName],
'Sun set',
rotation=90,
ha='left',
va='bottom')
ax.axvline(x=dataFrame.loc[maxValueIndex]['Date_Time'], ls='--', c='green')
ax.text(dataFrame.loc[maxValueIndex]['Date_Time'],
yAxisMiddle,
'Max value',
rotation=90,
ha='left',
va='center')
plt.xlabel('Time (hours)')
plt.xticks(rotation=90)
plt.ylabel(componentName + ' Component (nT)')
plt.legend()
plt.show()
places = pd.DataFrame({'locations': names, 'coordinates': coordinates})
return places
numDays = 365
oneDay = TimeDelta(1.0,format='jd')
firstDay = Time('2018-01-01 00:00:00',scale='utc')
allDays = [ firstDay + i*oneDay for i in range(numDays) ]
#places = get_places_fromlist(loc_names,loc_coord)
places = get_places(loc_names)
elevations = np.zeros((len(places.locations),len(allDays)))
for ind,(loc,coord) in enumerate(zip(places.locations,places.coordinates)):
print(f"Computing sun elevations for {loc}")
observer = Observer(location=coord)
noons = [ observer.noon(h,which=u'next') for h in allDays ]
sunpos = [ observer.sun_altaz(h) for h in noons ]
elevations[ind,:] = [ az.alt/u.deg for az in sunpos ]
df = pd.DataFrame([d.to_datetime() for d in allDays])
df.columns = [ 'Day' ]
dfelevs = pd.DataFrame(elevations.transpose(),columns=places.locations)
df = df.join(dfelevs).set_index('Day')
dfs = df.stack().reset_index()
dfs.columns = ['day','location','elevation']
p = ggplot(dfs,aes(x='day',y='elevation',color='location')) + geom_line()
p = p + ggtitle('Sun elevations by date and location')
p = p + xlab('Day of year') + ylab('Elevation (degrees)')
# morning (civil) twilight obs.morning_civil(date=time_obs) # morning (astronomical) twilight obs.morning_astronomical(date=time_obs) # what is the moon illumination? # returns a float, which is percentage of the moon illuminated obs.moon_illumination(date=time_obs) # what is the moon altitude and azimuth? obs.moon_altaz(date=time_obs) # Other sun-related convenience functions: obs.noon(date=time_obs, which='nearest') obs.midnight(date=time_obs, which='nearest') # ============== # Target objects # ============== ''' A target object defines a single observation target, with coordinates and an optional name. ''' from astroplan import FixedTarget, airmass_plot # Define a target. t1 = FixedTarget(name='Polaris', ra='02:31:49.09', dec='+89:15:50.8') # initializing from astropy entities directly
