def get_wavewatch(self, datetime, location):
"""
Computes the wave-height at the time and location
Input:
datetime in epoch time (numbers)
location in latitude, longitude: {'Lat': 24.4, 'Lng': -2.5}
Output:
wave height in meters
Side effect: loads the WAVEWATCH dictionary for the YYYYMMDDHH corresponding to
datetime
"""
if LOCAL_VS_S3 == 's3':
foldername = ns.get_s3foldername_from_epoch(
datetime, weather_type='WAVEWATCH')
if foldername not in self.WAVEWATCH:
self.WAVEWATCH[foldername] = ns.get_s3_wavewatch(datetime)
else:
foldername = ns.get_local_foldername_from_epoch(
datetime, weather_type='WAVEWATCH')
if foldername not in self.WAVEWATCH:
self.WAVEWATCH[foldername] = ns.get_local_wavewatch(datetime)
ndx = ns.location_to_wavewatch_index(location)
return self.WAVEWATCH[foldername][ndx %
len(self.WAVEWATCH[foldername])]
def get_gfs(self, datetime, location):
"""
Computes the wind velocity vector at the time and location
Input:
datetime in epoch time (numbers)
location in latitude, longitude: {'Lat': 24.4, 'Lng': -2.5}
Output:
ocean wind velocity vector (a tuple): (u, v) in meters/second. u = latitudinal speed
v = longitudinal speed
Side effect: loads the GFS dictionary for the YYYYMMDDHH corresponding to
datetime
"""
if LOCAL_VS_S3 == 's3':
foldername = ns.get_s3foldername_from_epoch(datetime,
weather_type='GFS')
if foldername not in self.GFS:
self.GFS[foldername] = ns.get_s3_gfs(datetime)
# print(GFS.keys())
# print(foldername)
else:
foldername = ns.get_local_foldername_from_epoch(datetime,
weather_type='GFS')
if foldername not in self.GFS:
self.GFS[foldername] = ns.get_local_gfs(datetime)
# print(GFS.keys())
# print(foldername)
ndx = ns.location_to_gfs_index(location)
return self.GFS[foldername][ndx % len(self.GFS[foldername])]
def get_oscar(self, datetime, location):
"""
Computes the ocean current vector at the time and location
Input:
datetime in epoch time (numbers)
location in latitude, longitude: {'Lat': 24.4, 'Lng': -2.5}
Output:
ocean current vector (a tuple): (u, v) in meters/second. u = latitudinal speed
v = longitudinal speed
Side effect: loads the OSCAR dictionary for the YYYYMMDD00 corresponding to
datetime
"""
if LOCAL_VS_S3 == 's3':
foldername = ns.get_s3foldername_from_epoch(datetime,
weather_type='OSCAR')
if foldername not in self.OSCAR:
# foldername e.g. 2019060200
self.OSCAR[foldername] = ns.get_s3_oscar(datetime)
# print(OSCAR)
else:
foldername = ns.get_local_foldername_from_epoch(
datetime, weather_type='OSCAR')
if foldername not in self.OSCAR:
# foldername e.g. 2019060200
self.OSCAR[foldername] = ns.get_local_oscar(datetime)
ndx = ns.location_to_oscar_index(location)
return self.OSCAR[foldername][ndx % len(self.OSCAR[foldername])]
def _get_state(self):
"""
Compute the state tuple. State consists of WAVEWATCH dictionary, GFS dictionary, OSCAR dictionary,
computed action and observables data record, current location, current timestamp, origin, destination
:return: state tuple
"""
if LOCAL_VS_S3 == 's3':
gfs = ns.get_s3foldername_from_epoch(self.current_timestamp,
weather_type='GFS')
oscar = ns.get_s3foldername_from_epoch(self.current_timestamp,
weather_type='OSCAR')
ww = ns.get_s3foldername_from_epoch(self.current_timestamp,
weather_type='WAVEWATCH')
else:
gfs = ns.get_local_foldername_from_epoch(self.current_timestamp,
weather_type='GFS')
oscar = ns.get_local_foldername_from_epoch(self.current_timestamp,
weather_type='OSCAR')
ww = ns.get_local_foldername_from_epoch(self.current_timestamp,
weather_type='WAVEWATCH')
return np.array(
self.__expand_observables(self.save_action_observables.values()))