def create_contexts(self):
context_ids = []
cond_ctxt = ParameterContext(
'conductivity_test',
param_type=QuantityType(value_encoding=np.float32))
cond_ctxt.uom = 'unknown'
cond_ctxt.fill_value = 0e0
context_ids.append(
self.dataset_management.create_parameter_context(
name='conductivity_test', parameter_context=cond_ctxt.dump()))
pres_ctxt = ParameterContext(
'pressure_test',
param_type=QuantityType(value_encoding=np.float32))
pres_ctxt.uom = 'Pascal'
pres_ctxt.fill_value = 0x0
context_ids.append(
self.dataset_management.create_parameter_context(
name='pressure_test', parameter_context=pres_ctxt.dump()))
sal_ctxt = ParameterContext(
'salinity_test',
param_type=QuantityType(value_encoding=np.float32))
sal_ctxt.uom = 'PSU'
sal_ctxt.fill_value = 0x0
context_ids.append(
self.dataset_management.create_parameter_context(
name='salinity_test', parameter_context=sal_ctxt.dump()))
temp_ctxt = ParameterContext(
'temp_test', param_type=QuantityType(value_encoding=np.float32))
temp_ctxt.uom = 'degree_Celsius'
temp_ctxt.fill_value = 0e0
context_ids.append(
self.dataset_management.create_parameter_context(
name='temp_test', parameter_context=temp_ctxt.dump()))
t_ctxt = ParameterContext(
'time_test', param_type=QuantityType(value_encoding=np.int64))
t_ctxt.uom = 'seconds since 1970-01-01'
t_ctxt.fill_value = 0x0
context_ids.append(
self.dataset_management.create_parameter_context(
name='time_test', parameter_context=t_ctxt.dump()))
return context_ids
def _create_input_param_dict_for_test(self, parameter_dict_name=''):
pdict = ParameterDictionary()
t_ctxt = ParameterContext(
'time',
param_type=QuantityType(value_encoding=numpy.dtype('float64')))
t_ctxt.axis = AxisTypeEnum.TIME
t_ctxt.uom = 'seconds since 01-01-1900'
pdict.add_context(t_ctxt)
cond_ctxt = ParameterContext(
'conductivity',
param_type=QuantityType(value_encoding=numpy.dtype('float32')))
cond_ctxt.uom = ''
pdict.add_context(cond_ctxt)
pres_ctxt = ParameterContext(
'pressure',
param_type=QuantityType(value_encoding=numpy.dtype('float32')))
pres_ctxt.uom = ''
pdict.add_context(pres_ctxt)
temp_ctxt = ParameterContext(
'temperature',
param_type=QuantityType(value_encoding=numpy.dtype('float32')))
temp_ctxt.uom = ''
pdict.add_context(temp_ctxt)
dens_ctxt = ParameterContext(
'density',
param_type=QuantityType(value_encoding=numpy.dtype('float32')))
dens_ctxt.uom = ''
pdict.add_context(dens_ctxt)
sal_ctxt = ParameterContext(
'salinity',
param_type=QuantityType(value_encoding=numpy.dtype('float32')))
sal_ctxt.uom = ''
pdict.add_context(sal_ctxt)
#create temp streamdef so the data product can create the stream
pc_list = []
for pc_k, pc in pdict.iteritems():
ctxt_id = self.dataset_management.create_parameter_context(
pc_k, pc[1].dump())
pc_list.append(ctxt_id)
self.addCleanup(self.dataset_management.delete_parameter_context,
ctxt_id)
pdict_id = self.dataset_management.create_parameter_dictionary(
parameter_dict_name, pc_list)
self.addCleanup(self.dataset_management.delete_parameter_dictionary,
pdict_id)
return pdict_id
def __init__(self,
total_domain=(10, 10),
brick_size=5,
use_hdf=False,
root_dir='test_data/multi_dim_trials',
guid=None,
dtype='int16'):
self.total_domain = total_domain
self.brick_sizes = tuple(brick_size for x in total_domain)
self.use_hdf = use_hdf
self.dtype = np.dtype(dtype).name
if self.use_hdf:
self.guid = guid or create_guid()
name = '%s_%s' % (self.guid, self.dtype)
self.root_dir = root_dir
if not os.path.exists(self.root_dir):
os.makedirs(self.root_dir)
if os.path.exists(os.path.join(self.root_dir, name)):
shutil.rmtree(os.path.join(self.root_dir, name))
self.master_manager = MasterManager(
self.root_dir, name, name='md_test_{0}'.format(name))
self.master_manager.flush()
pc = ParameterContext('test_param',
param_type=QuantityType(self.dtype),
fill_value=-1)
self.param_manager = ParameterManager(
os.path.join(self.root_dir, name, pc.name), pc.name)
self.param_manager.parameter_context = pc
self.master_manager.create_group(pc.name)
self.param_manager.flush()
self.bricks = {}
self.brick_origins = bricking_utils.calc_brick_origins(
self.total_domain, self.brick_sizes)
self.brick_extents, self.rtree_extents = bricking_utils.calc_brick_and_rtree_extents(
self.brick_origins, self.brick_sizes)
self.build_bricks()
self.rtree = RTreeProxy()
for x in BrickingAssessor.rtree_populator(self.rtree_extents,
self.brick_extents):
self.rtree.insert(*x)
def rdt_to_granule(self, context, value_array, comp_val=None):
time = ParameterContext(
name='time', param_type=QuantityType(value_encoding=np.float64))
pdict = ParameterDictionary()
pdict.add_context(time, is_temporal=True)
pdict.add_context(context)
rdt = RecordDictionaryTool(param_dictionary=pdict)
rdt['time'] = np.arange(len(value_array))
rdt['test'] = value_array
granule = rdt.to_granule()
rdt2 = RecordDictionaryTool.load_from_granule(granule)
testval = comp_val if comp_val is not None else value_array
actual = rdt2['test']
if isinstance(testval, basestring):
self.assertEquals(testval, actual)
else:
np.testing.assert_array_equal(testval, actual)
def cov_io(self, context, value_array, comp_val=None):
pdict = ParameterDictionary()
time = ParameterContext(
name='time', param_type=QuantityType(value_encoding=np.float64))
pdict.add_context(context)
pdict.add_context(time, True)
# Construct temporal and spatial Coordinate Reference System objects
tcrs = CRS([AxisTypeEnum.TIME])
scrs = CRS([AxisTypeEnum.LON, AxisTypeEnum.LAT])
# Construct temporal and spatial Domain objects
tdom = GridDomain(GridShape('temporal', [0]), tcrs,
MutabilityEnum.EXTENSIBLE) # 1d (timeline)
sdom = GridDomain(GridShape('spatial',
[0]), scrs, MutabilityEnum.IMMUTABLE
) # 0d spatial topology (station/trajectory)
# Instantiate the SimplexCoverage providing the ParameterDictionary, spatial Domain and temporal Domain
cov = SimplexCoverage('test_data',
create_guid(),
'sample coverage_model',
parameter_dictionary=pdict,
temporal_domain=tdom,
spatial_domain=sdom)
self.addCleanup(shutil.rmtree, cov.persistence_dir)
cov.insert_timesteps(len(value_array))
cov.set_parameter_values('test',
tdoa=slice(0, len(value_array)),
value=value_array)
comp_val = comp_val if comp_val is not None else value_array
testval = cov.get_parameter_values('test')
try:
np.testing.assert_array_equal(testval, comp_val)
except:
print repr(value_array)
raise
def _get_pdict(self, filter_values):
t_ctxt = ParameterContext(
'TIME', param_type=QuantityType(value_encoding=np.dtype('int64')))
t_ctxt.uom = 'seconds since 01-01-1900'
t_ctxt_id = self.dataset_management.create_parameter_context(
name='TIME',
parameter_context=t_ctxt.dump(),
parameter_type='quantity<int64>',
unit_of_measure=t_ctxt.uom)
lat_ctxt = ParameterContext(
'LAT',
param_type=ConstantType(
QuantityType(value_encoding=np.dtype('float32'))),
fill_value=-9999)
lat_ctxt.axis = AxisTypeEnum.LAT
lat_ctxt.uom = 'degree_north'
lat_ctxt_id = self.dataset_management.create_parameter_context(
name='LAT',
parameter_context=lat_ctxt.dump(),
parameter_type='quantity<float32>',
unit_of_measure=lat_ctxt.uom)
lon_ctxt = ParameterContext(
'LON',
param_type=ConstantType(
QuantityType(value_encoding=np.dtype('float32'))),
fill_value=-9999)
lon_ctxt.axis = AxisTypeEnum.LON
lon_ctxt.uom = 'degree_east'
lon_ctxt_id = self.dataset_management.create_parameter_context(
name='LON',
parameter_context=lon_ctxt.dump(),
parameter_type='quantity<float32>',
unit_of_measure=lon_ctxt.uom)
# Independent Parameters
# Temperature - values expected to be the decimal results of conversion from hex
temp_ctxt = ParameterContext(
'TEMPWAT_L0',
param_type=QuantityType(value_encoding=np.dtype('float32')),
fill_value=-9999)
temp_ctxt.uom = 'deg_C'
temp_ctxt_id = self.dataset_management.create_parameter_context(
name='TEMPWAT_L0',
parameter_context=temp_ctxt.dump(),
parameter_type='quantity<float32>',
unit_of_measure=temp_ctxt.uom)
# Conductivity - values expected to be the decimal results of conversion from hex
cond_ctxt = ParameterContext(
'CONDWAT_L0',
param_type=QuantityType(value_encoding=np.dtype('float32')),
fill_value=-9999)
cond_ctxt.uom = 'S m-1'
cond_ctxt_id = self.dataset_management.create_parameter_context(
name='CONDWAT_L0',
parameter_context=cond_ctxt.dump(),
parameter_type='quantity<float32>',
unit_of_measure=cond_ctxt.uom)
# Pressure - values expected to be the decimal results of conversion from hex
press_ctxt = ParameterContext(
'PRESWAT_L0',
param_type=QuantityType(value_encoding=np.dtype('float32')),
fill_value=-9999)
press_ctxt.uom = 'dbar'
press_ctxt_id = self.dataset_management.create_parameter_context(
name='PRESWAT_L0',
parameter_context=press_ctxt.dump(),
parameter_type='quantity<float32>',
unit_of_measure=press_ctxt.uom)
# Dependent Parameters
# TEMPWAT_L1 = (TEMPWAT_L0 / 10000) - 10
tl1_func = '(T / 10000) - 10'
tl1_pmap = {'T': 'TEMPWAT_L0'}
expr = NumexprFunction('TEMPWAT_L1',
tl1_func, ['T'],
param_map=tl1_pmap)
tempL1_ctxt = ParameterContext(
'TEMPWAT_L1',
param_type=ParameterFunctionType(function=expr),
variability=VariabilityEnum.TEMPORAL)
tempL1_ctxt.uom = 'deg_C'
tempL1_ctxt_id = self.dataset_management.create_parameter_context(
name=tempL1_ctxt.name,
parameter_context=tempL1_ctxt.dump(),
parameter_type='pfunc',
unit_of_measure=tempL1_ctxt.uom)
# CONDWAT_L1 = (CONDWAT_L0 / 100000) - 0.5
cl1_func = '(C / 100000) - 0.5'
cl1_pmap = {'C': 'CONDWAT_L0'}
expr = NumexprFunction('CONDWAT_L1',
cl1_func, ['C'],
param_map=cl1_pmap)
condL1_ctxt = ParameterContext(
'CONDWAT_L1',
param_type=ParameterFunctionType(function=expr),
variability=VariabilityEnum.TEMPORAL)
condL1_ctxt.uom = 'S m-1'
condL1_ctxt_id = self.dataset_management.create_parameter_context(
name=condL1_ctxt.name,
parameter_context=condL1_ctxt.dump(),
parameter_type='pfunc',
unit_of_measure=condL1_ctxt.uom)
# Equation uses p_range, which is a calibration coefficient - Fixing to 679.34040721
# PRESWAT_L1 = (PRESWAT_L0 * p_range / (0.85 * 65536)) - (0.05 * p_range)
pl1_func = '(P * p_range / (0.85 * 65536)) - (0.05 * p_range)'
pl1_pmap = {'P': 'PRESWAT_L0', 'p_range': 679.34040721}
expr = NumexprFunction('PRESWAT_L1',
pl1_func, ['P', 'p_range'],
param_map=pl1_pmap)
presL1_ctxt = ParameterContext(
'PRESWAT_L1',
param_type=ParameterFunctionType(function=expr),
variability=VariabilityEnum.TEMPORAL)
presL1_ctxt.uom = 'S m-1'
presL1_ctxt_id = self.dataset_management.create_parameter_context(
name=presL1_ctxt.name,
parameter_context=presL1_ctxt.dump(),
parameter_type='pfunc',
unit_of_measure=presL1_ctxt.uom)
# Density & practical salinity calucluated using the Gibbs Seawater library - available via python-gsw project:
# https://code.google.com/p/python-gsw/ & http://pypi.python.org/pypi/gsw/3.0.1
# PRACSAL = gsw.SP_from_C((CONDWAT_L1 * 10), TEMPWAT_L1, PRESWAT_L1)
owner = 'gsw'
sal_func = 'SP_from_C'
sal_arglist = ['C', 't', 'p']
sal_pmap = {
'C':
NumexprFunction('CONDWAT_L1*10',
'C*10', ['C'],
param_map={'C': 'CONDWAT_L1'}),
't':
'TEMPWAT_L1',
'p':
'PRESWAT_L1'
}
sal_kwargmap = None
expr = PythonFunction('PRACSAL', owner, sal_func, sal_arglist,
sal_kwargmap, sal_pmap)
sal_ctxt = ParameterContext('PRACSAL',
param_type=ParameterFunctionType(expr),
variability=VariabilityEnum.TEMPORAL)
sal_ctxt.uom = 'g kg-1'
sal_ctxt_id = self.dataset_management.create_parameter_context(
name=sal_ctxt.name,
parameter_context=sal_ctxt.dump(),
parameter_type='pfunc',
unit_of_measure=sal_ctxt.uom)
# absolute_salinity = gsw.SA_from_SP(PRACSAL, PRESWAT_L1, longitude, latitude)
# conservative_temperature = gsw.CT_from_t(absolute_salinity, TEMPWAT_L1, PRESWAT_L1)
# DENSITY = gsw.rho(absolute_salinity, conservative_temperature, PRESWAT_L1)
owner = 'gsw'
abs_sal_expr = PythonFunction('abs_sal', owner, 'SA_from_SP',
['PRACSAL', 'PRESWAT_L1', 'LON', 'LAT'])
cons_temp_expr = PythonFunction(
'cons_temp', owner, 'CT_from_t',
[abs_sal_expr, 'TEMPWAT_L1', 'PRESWAT_L1'])
dens_expr = PythonFunction(
'DENSITY', owner, 'rho',
[abs_sal_expr, cons_temp_expr, 'PRESWAT_L1'])
dens_ctxt = ParameterContext(
'DENSITY',
param_type=ParameterFunctionType(dens_expr),
variability=VariabilityEnum.TEMPORAL)
dens_ctxt.uom = 'kg m-3'
dens_ctxt_id = self.dataset_management.create_parameter_context(
name=dens_ctxt.name,
parameter_context=dens_ctxt.dump(),
parameter_type='pfunc',
unit_of_measure=dens_ctxt.uom)
ids = [
t_ctxt_id, lat_ctxt_id, lon_ctxt_id, temp_ctxt_id, cond_ctxt_id,
press_ctxt_id, tempL1_ctxt_id, condL1_ctxt_id, presL1_ctxt_id,
sal_ctxt_id, dens_ctxt_id
]
contexts = [
t_ctxt, lat_ctxt, lon_ctxt, temp_ctxt, cond_ctxt, press_ctxt,
tempL1_ctxt, condL1_ctxt, presL1_ctxt, sal_ctxt, dens_ctxt
]
context_ids = [
ids[i] for i, ctxt in enumerate(contexts)
if ctxt.name in filter_values
]
pdict_name = '_'.join(
[ctxt.name for ctxt in contexts if ctxt.name in filter_values])
try:
self.pdicts[pdict_name]
return self.pdicts[pdict_name]
except KeyError:
pdict_id = self.dataset_management.create_parameter_dictionary(
pdict_name,
parameter_context_ids=context_ids,
temporal_context='time')
self.pdicts[pdict_name] = pdict_id
return pdict_id
def create_pfuncs(self):
contexts = {}
funcs = {}
t_ctxt = ParameterContext(
'TIME', param_type=QuantityType(value_encoding=np.dtype('int64')))
t_ctxt.uom = 'seconds since 01-01-1900'
t_ctxt_id = self.dataset_management.create_parameter_context(
name='test_TIME', parameter_context=t_ctxt.dump())
contexts['TIME'] = (t_ctxt, t_ctxt_id)
lat_ctxt = ParameterContext(
'LAT',
param_type=ConstantType(
QuantityType(value_encoding=np.dtype('float32'))),
fill_value=-9999)
lat_ctxt.axis = AxisTypeEnum.LAT
lat_ctxt.uom = 'degree_north'
lat_ctxt_id = self.dataset_management.create_parameter_context(
name='test_LAT', parameter_context=lat_ctxt.dump())
contexts['LAT'] = lat_ctxt, lat_ctxt_id
lon_ctxt = ParameterContext(
'LON',
param_type=ConstantType(
QuantityType(value_encoding=np.dtype('float32'))),
fill_value=-9999)
lon_ctxt.axis = AxisTypeEnum.LON
lon_ctxt.uom = 'degree_east'
lon_ctxt_id = self.dataset_management.create_parameter_context(
name='test_LON', parameter_context=lon_ctxt.dump())
contexts['LON'] = lon_ctxt, lon_ctxt_id
# Independent Parameters
# Temperature - values expected to be the decimal results of conversion from hex
temp_ctxt = ParameterContext(
'TEMPWAT_L0',
param_type=QuantityType(value_encoding=np.dtype('float32')),
fill_value=-9999)
temp_ctxt.uom = 'deg_C'
temp_ctxt_id = self.dataset_management.create_parameter_context(
name='test_TEMPWAT_L0', parameter_context=temp_ctxt.dump())
contexts['TEMPWAT_L0'] = temp_ctxt, temp_ctxt_id
# Conductivity - values expected to be the decimal results of conversion from hex
cond_ctxt = ParameterContext(
'CONDWAT_L0',
param_type=QuantityType(value_encoding=np.dtype('float32')),
fill_value=-9999)
cond_ctxt.uom = 'S m-1'
cond_ctxt_id = self.dataset_management.create_parameter_context(
name='test_CONDWAT_L0', parameter_context=cond_ctxt.dump())
contexts['CONDWAT_L0'] = cond_ctxt, cond_ctxt_id
# Pressure - values expected to be the decimal results of conversion from hex
press_ctxt = ParameterContext(
'PRESWAT_L0',
param_type=QuantityType(value_encoding=np.dtype('float32')),
fill_value=-9999)
press_ctxt.uom = 'dbar'
press_ctxt_id = self.dataset_management.create_parameter_context(
name='test_PRESWAT_L0', parameter_context=press_ctxt.dump())
contexts['PRESWAT_L0'] = press_ctxt, press_ctxt_id
# Dependent Parameters
# TEMPWAT_L1 = (TEMPWAT_L0 / 10000) - 10
tl1_func = '(T / 10000) - 10'
expr = NumexprFunction('TEMPWAT_L1', tl1_func, ['T'])
expr_id = self.dataset_management.create_parameter_function(
name='test_TEMPWAT_L1', parameter_function=expr.dump())
funcs['TEMPWAT_L1'] = expr, expr_id
tl1_pmap = {'T': 'TEMPWAT_L0'}
expr.param_map = tl1_pmap
tempL1_ctxt = ParameterContext(
'TEMPWAT_L1',
param_type=ParameterFunctionType(function=expr),
variability=VariabilityEnum.TEMPORAL)
tempL1_ctxt.uom = 'deg_C'
tempL1_ctxt_id = self.dataset_management.create_parameter_context(
name='test_TEMPWAT_L1',
parameter_context=tempL1_ctxt.dump(),
parameter_function_id=expr_id)
contexts['TEMPWAT_L1'] = tempL1_ctxt, tempL1_ctxt_id
# CONDWAT_L1 = (CONDWAT_L0 / 100000) - 0.5
cl1_func = '(C / 100000) - 0.5'
expr = NumexprFunction('CONDWAT_L1', cl1_func, ['C'])
expr_id = self.dataset_management.create_parameter_function(
name='test_CONDWAT_L1', parameter_function=expr.dump())
funcs['CONDWAT_L1'] = expr, expr_id
cl1_pmap = {'C': 'CONDWAT_L0'}
expr.param_map = cl1_pmap
condL1_ctxt = ParameterContext(
'CONDWAT_L1',
param_type=ParameterFunctionType(function=expr),
variability=VariabilityEnum.TEMPORAL)
condL1_ctxt.uom = 'S m-1'
condL1_ctxt_id = self.dataset_management.create_parameter_context(
name='test_CONDWAT_L1',
parameter_context=condL1_ctxt.dump(),
parameter_function_id=expr_id)
contexts['CONDWAT_L1'] = condL1_ctxt, condL1_ctxt_id
# Equation uses p_range, which is a calibration coefficient - Fixing to 679.34040721
# PRESWAT_L1 = (PRESWAT_L0 * p_range / (0.85 * 65536)) - (0.05 * p_range)
pl1_func = '(P * p_range / (0.85 * 65536)) - (0.05 * p_range)'
expr = NumexprFunction('PRESWAT_L1', pl1_func, ['P', 'p_range'])
expr_id = self.dataset_management.create_parameter_function(
name='test_PRESWAT_L1', parameter_function=expr.dump())
funcs['PRESWAT_L1'] = expr, expr_id
pl1_pmap = {'P': 'PRESWAT_L0', 'p_range': 679.34040721}
expr.param_map = pl1_pmap
presL1_ctxt = ParameterContext(
'PRESWAT_L1',
param_type=ParameterFunctionType(function=expr),
variability=VariabilityEnum.TEMPORAL)
presL1_ctxt.uom = 'S m-1'
presL1_ctxt_id = self.dataset_management.create_parameter_context(
name='test_CONDWAT_L1',
parameter_context=presL1_ctxt.dump(),
parameter_function_id=expr_id)
contexts['PRESWAT_L1'] = presL1_ctxt, presL1_ctxt_id
# Density & practical salinity calucluated using the Gibbs Seawater library - available via python-gsw project:
# https://code.google.com/p/python-gsw/ & http://pypi.python.org/pypi/gsw/3.0.1
# PRACSAL = gsw.SP_from_C((CONDWAT_L1 * 10), TEMPWAT_L1, PRESWAT_L1)
owner = 'gsw'
sal_func = 'SP_from_C'
sal_arglist = ['C', 't', 'p']
expr = PythonFunction('PRACSAL', owner, sal_func, sal_arglist)
expr_id = self.dataset_management.create_parameter_function(
name='test_PRACSAL', parameter_function=expr.dump())
funcs['PRACSAL'] = expr, expr_id
# A magic function that may or may not exist actually forms the line below at runtime.
sal_pmap = {
'C':
NumexprFunction('CONDWAT_L1*10',
'C*10', ['C'],
param_map={'C': 'CONDWAT_L1'}),
't':
'TEMPWAT_L1',
'p':
'PRESWAT_L1'
}
expr.param_map = sal_pmap
sal_ctxt = ParameterContext('PRACSAL',
param_type=ParameterFunctionType(expr),
variability=VariabilityEnum.TEMPORAL)
sal_ctxt.uom = 'g kg-1'
sal_ctxt_id = self.dataset_management.create_parameter_context(
name='test_PRACSAL',
parameter_context=sal_ctxt.dump(),
parameter_function_id=expr_id)
contexts['PRACSAL'] = sal_ctxt, sal_ctxt_id
# absolute_salinity = gsw.SA_from_SP(PRACSAL, PRESWAT_L1, longitude, latitude)
# conservative_temperature = gsw.CT_from_t(absolute_salinity, TEMPWAT_L1, PRESWAT_L1)
# DENSITY = gsw.rho(absolute_salinity, conservative_temperature, PRESWAT_L1)
owner = 'gsw'
abs_sal_expr = PythonFunction('abs_sal', owner, 'SA_from_SP',
['PRACSAL', 'PRESWAT_L1', 'LON', 'LAT'])
cons_temp_expr = PythonFunction(
'cons_temp', owner, 'CT_from_t',
[abs_sal_expr, 'TEMPWAT_L1', 'PRESWAT_L1'])
dens_expr = PythonFunction(
'DENSITY', owner, 'rho',
[abs_sal_expr, cons_temp_expr, 'PRESWAT_L1'])
dens_ctxt = ParameterContext(
'DENSITY',
param_type=ParameterFunctionType(dens_expr),
variability=VariabilityEnum.TEMPORAL)
dens_ctxt.uom = 'kg m-3'
dens_ctxt_id = self.dataset_management.create_parameter_context(
name='test_DENSITY', parameter_context=dens_ctxt.dump())
contexts['DENSITY'] = dens_ctxt, dens_ctxt_id
return contexts, funcs