def get_data(
self,
wdmpath,
dsn,
start=None,
end=None,
):
"""
Gets attributes and data from a DSN in a WDM file.
wdmpath -- path to the WDM file
dsn -- the dataset number
attributes -- a list of the six character code from LIB3.0
start -- the start date and time as Python datetime.datetime class
end -- the end date and time as Python datetime.datetime class
"""
wdm_number = self.openfiles[wdmpath]
if self.verbose: print('getting data from dataset number %d' % dsn)
if hspf.wdckdtpy(wdm_number, dsn) == 0:
if self.verbose:
print('DSN {} in file {} does not exist'.format(dsn, wdmpath))
return None
dataset = DSN(wdm_number, dsn, self.message)
tdsfrc, llsdat, lledat, retcode = hspf.wtfndtpy(wdm_number, dsn, 1)
if retcode == -6:
print('no data present')
return None
if self.verbose: print('reading data from DSN {}'.format(dsn))
if start != None:
llsdat = [
start.year, start.month, start.day, start.hour, start.minute,
start.second
]
if end != None:
lledat = [
end.year, end.month, end.day, end.hour, end.minute, end.second
]
# Determine the number of values in the dataset
tcode = dataset.get_attribute(17, self.attributes['TCODE '])[0]
tsstep = dataset.get_attribute(33, self.attributes['TSSTEP'])[0]
n = hspf.timdifpy(llsdat, lledat, tcode, tsstep)
# Get the data and put it into dictionary
data, retcode = hspf.wdtgetpy(wdm_number, dsn, tsstep, llsdat, n, 0,
30, tcode)
self.retcode_check(retcode, function='wdtget')
return data
def get_data(self,
wdmpath,
dsn,
start = None,
end = None,
):
"""
Gets attributes and data from a DSN in a WDM file.
wdmpath -- path to the WDM file
dsn -- the dataset number
attributes -- a list of the six character code from LIB3.0
start -- the start date and time as Python datetime.datetime class
end -- the end date and time as Python datetime.datetime class
"""
wdm_number = self.openfiles[wdmpath]
if self.verbose: print('getting data from dataset number %d' % dsn)
if hspf.wdckdtpy(wdm_number, dsn) == 0:
if self.verbose:
print('DSN {} in file {} does not exist'.format(dsn, wdmpath))
return None
dataset = DSN(wdm_number, dsn, self.message)
tdsfrc, llsdat, lledat, retcode = hspf.wtfndtpy(wdm_number, dsn, 1)
if retcode == -6:
print('no data present')
return None
if self.verbose: print('reading data from DSN {}'.format(dsn))
if start != None:
llsdat = [start.year, start.month, start.day, start.hour,
start.minute, start.second]
if end != None:
lledat = [end.year, end.month, end.day, end.hour, end.minute,
end.second]
# Determine the number of values in the dataset
tcode = dataset.get_attribute(17, self.attributes['TCODE '])[0]
tsstep = dataset.get_attribute(33, self.attributes['TSSTEP'])[0]
n = hspf.timdifpy(llsdat, lledat, tcode, tsstep)
# Get the data and put it into dictionary
data, retcode = hspf.wdtgetpy(wdm_number, dsn, tsstep, llsdat, n,
0, 30, tcode)
self.retcode_check(retcode, function = 'wdtget')
return data
def create_dataset(
self,
wdmpath,
dsn,
attributes,
pointers=None,
):
"""
Creates new dataset in self.wdmfp/dsn. Parameters:
wdmpath: path to the WDM file to add the dataset
dsn: the dataset number
pointers: a class containing the pointer attributes
attributes: a dictionary of the attributes for the DSN, using the six
character designation from the message file. These are:
tstype: the type of time series
step: the time step size (some restrictions)
station: station ID
scenario: scenario (e.g., OBSERVED)
location: location
description: description
constituent: constituent
fill: value to fill missing data
"""
wdm_number = self.openfiles[wdmpath]
if self.verbose: print('creating DSN {} in {}'.format(dsn, wdmpath))
if hspf.wdckdtpy(wdm_number, dsn) == 1 and self.verbose:
print('DSN {} already exists'.format(dsn))
dataset = DSN(wdm_number, dsn, self.message)
if pointers is None: pointers = Pointers()
dataset.create(pointers)
if self.verbose:
print('created new DSN {}'.format(dsn))
print('writing attributes to DSN {}'.format(dsn))
for k, v in attributes.items():
retcode, var = dataset.add_attribute(v, self.attributes[k])
if retcode == 0 and self.verbose:
print('set {} to {}'.format(k, v))
elif self.verbose:
print('failed to set value of {}'.format(k))
raise
self.dsns[wdm_number] = dsn
def create_dataset(self,
wdmpath,
dsn,
attributes,
pointers = None,
):
"""Creates new dataset in self.wdmfp/dsn. Parameters:
wdmpath: path to the WDM file to add the dataset
dsn: the dataset number
pointers: a class containing the pointer attributes
attributes: a dictionary of the attributes for the DSN, using the six
character designation from the message file. These are:
tstype: the type of time series
step: the time step size (some restrictions)
station: station ID
scenario: scenario (e.g., OBSERVED)
location: location
description: description
constituent: constituent
fill: value to fill missing data
"""
wdm_number = self.openfiles[wdmpath]
if self.verbose: print('creating DSN {} in {}'.format(dsn, wdmpath))
if hspf.wdckdtpy(wdm_number, dsn) == 1 and self.verbose:
print('DSN {} already exists'.format(dsn))
dataset = DSN(wdm_number, dsn, self.message)
if pointers is None: pointers = Pointers()
dataset.create(pointers)
if self.verbose:
print('created new DSN {}'.format(dsn))
print('writing attributes to DSN {}'.format(dsn))
for k, v in attributes.items():
retcode, var = dataset.add_attribute(v, self.attributes[k])
if retcode == 0 and self.verbose:
print('set {} to {}'.format(k, v))
elif self.verbose:
print('failed to set value of {}'.format(k))
self.dsns[wdm_number] = dsn
