def __init__(self,
name=None,
units=None,
time=None,
variables=None,
grid=None,
grid_file=None,
data_file=None,
dataset=None):
VelocityGrid.__init__(self,
name=name,
units=units,
time=time,
variables=variables,
grid=grid,
grid_file=grid_file,
data_file=data_file,
dataset=dataset)
self.angle = None
df = None
if dataset is not None:
df = dataset
elif data_file is not None:
df = _get_dataset(data_file)
if df is not None and 'angle' in df.variables.keys():
# Unrotated ROMS Grid!
self.angle = GriddedProp(name='angle',
units='radians',
time=None,
grid=self.grid,
data=df['angle'])
def __init__(self,
name=None,
units=None,
time=None,
variables=None,
grid=None,
grid_file=None,
data_file=None,
dataset=None,
**kwargs):
VelocityGrid.__init__(self,
name=name,
units=units,
time=time,
variables=variables,
grid=grid,
grid_file=grid_file,
data_file=data_file,
dataset=dataset)
self.angle = None
df = None
if dataset is not None:
df = dataset
elif grid_file is not None:
df = _get_dataset(grid_file)
if df is not None and 'angle' in df.variables.keys():
# Unrotated ROMS Grid!
self.angle = GriddedProp(name='angle', units='radians', time=None, grid=self.grid, data=df['angle'])
def gp2():
return GriddedProp(name='v;',
units='m/s',
time=grid_time,
data=grid_v,
data_file=curr_file,
grid=test_grid,
grid_file=curr_file)
def test_construction(self):
u = GriddedProp(name='u',
units='m/s',
data=grid_u,
grid=test_grid,
time=grid_time,
data_file='tbofs_example.nc',
grid_file='tbofs_example.nc')
with pytest.raises(ValueError):
u = GriddedProp(name='u',
units='m/s',
data=None, # NO DATA
grid=test_grid,
time=grid_time,
data_file='tbofs_example.nc',
grid_file='tbofs_example.nc')
with pytest.raises(ValueError):
u = GriddedProp(name='u',
units='m/s',
data=grid_u,
grid=None, # NO GRID
time=grid_time,
data_file='tbofs_example.nc',
grid_file='tbofs_example.nc')
with pytest.raises(ValueError):
u = GriddedProp(name='u',
units='m/s',
data=u_data, # BAD DATA SHAPE
grid=test_grid,
time=grid_time,
data_file='tbofs_example.nc',
grid_file='tbofs_example.nc')
with pytest.raises(ValueError):
u = GriddedProp(name='u',
units='m/s',
data=grid_u,
grid=test_grid,
time=dates2, # BAD TIME SHAPE
data_file='tbofs_example.nc',
grid_file='tbofs_example.nc')
topology = {'node_lon': 'lonc',
'node_lat': 'latc'}
k = GriddedProp.from_netCDF(name='u',
depth=None,
grid_file=curr_file,
grid_topology=topology,
data_file=curr_file,
varname='water_u')
assert k.name == u.name
assert k.units == 'meter second-1'
# fixme: this was failing
#assert k.time == u.time
assert k.data[0, 0, 0] == u.data[0, 0, 0]
def test_construction(self):
u = GriddedProp(name='u',
units='m/s',
data=grid_u,
grid=test_grid,
time=grid_time,
data_file='tbofs_example.nc',
grid_file='tbofs_example.nc')
with pytest.raises(ValueError):
u = GriddedProp(
name='u',
units='m/s',
data=None, #NO DATA
grid=test_grid,
time=grid_time,
data_file='tbofs_example.nc',
grid_file='tbofs_example.nc')
with pytest.raises(ValueError):
u = GriddedProp(
name='u',
units='m/s',
data=grid_u,
grid=None, #NO GRID
time=grid_time,
data_file='tbofs_example.nc',
grid_file='tbofs_example.nc')
with pytest.raises(ValueError):
u = GriddedProp(
name='u',
units='m/s',
data=u_data, #BAD DATA SHAPE
grid=test_grid,
time=grid_time,
data_file='tbofs_example.nc',
grid_file='tbofs_example.nc')
with pytest.raises(ValueError):
u = GriddedProp(
name='u',
units='m/s',
data=grid_u,
grid=test_grid,
time=dates2, #BAD TIME SHAPE
data_file='tbofs_example.nc',
grid_file='tbofs_example.nc')
topology = {'node_lon': 'lonc', 'node_lat': 'latc'}
k = GriddedProp.from_netCDF(name='u',
grid_file=curr_file,
grid_topology=topology,
data_file=curr_file,
varname='water_u')
assert k.name == u.name
assert k.units == 'meter second-1'
assert k.time == u.time
assert k.data[0, 0, 0] == u.data[0, 0, 0]
def __init__(self, angle=None, **kwargs):
"""
:param angle: scalar field of cell rotation angles (for rotated/distorted grids)
"""
if 'variables' in kwargs:
variables = kwargs['variables']
if len(variables) == 2:
variables.append(TimeSeriesProp(name='constant w', data=[0.0], time=Time.constant_time(), units='m/s'))
kwargs['variables'] = variables
if angle is None:
df = None
if kwargs.get('dataset', None) is not None:
df = kwargs['dataset']
elif kwargs.get('grid_file', None) is not None:
df = _get_dataset(kwargs['grid_file'])
if df is not None and 'angle' in df.variables.keys():
# Unrotated ROMS Grid!
self.angle = GriddedProp(name='angle', units='radians', time=None, grid=kwargs['grid'], data=df['angle'])
else:
self.angle = None
else:
self.angle = angle
super(VelocityGrid, self).__init__(**kwargs)
vy = vy[np.newaxis, :] * 20
# vx = 1/x[np.newaxis,:]
# vy = 1/y[np.newaxis,:]
# vx[vx == np.inf] = 0
# vy[vy == np.inf] = 0
# vx = vx/mag *30
# vy = vy/mag *30
# v_x = vx.copy()
# v_y - vy.copy()
# sl = [0,0:30,31:61]
# v_x = vx[:,0] * np.cos(angs) - value[:,1] * np.sin(angs)
# y = value[:,0] * np.sin(angs) + value[:,1] * np.cos(angs)
# value[:,0] = x
# value[:,1] = y
vels_x = GriddedProp(name='v_x', units='m/s', time=[t], grid=g, data=vx)
vels_y = GriddedProp(name='v_y', units='m/s', time=[t], grid=g, data=vy)
vg = GridCurrent(variables=[vels_y, vels_x], time=[t], grid=g, units='m/s')
point = np.zeros((1, 2))
print vg.at(point, t)
# define base directory
base_dir = os.path.dirname(__file__)
def make_model():
duration_hrs = 48
time_step = 900
num_steps = duration_hrs * 3600 / time_step
mod = Model(start_time=t,
duration=timedelta(hours=duration_hrs),
class GridWind(VelocityGrid, Environment):
_ref_as = 'wind'
default_names = [['air_u', 'air_v'], ['Air_U', 'Air_V'],
['air_ucmp', 'air_vcmp'], ['wind_u', 'wind_v']]
def __init__(self,
name=None,
units=None,
time=None,
variables=None,
grid=None,
grid_file=None,
data_file=None,
dataset=None):
VelocityGrid.__init__(self,
name=name,
units=units,
time=time,
variables=variables,
grid=grid,
grid_file=grid_file,
data_file=data_file,
dataset=dataset)
self.angle = None
df = None
if dataset is not None:
df = dataset
elif data_file is not None:
df = _get_dataset(data_file)
if df is not None and 'angle' in df.variables.keys():
# Unrotated ROMS Grid!
self.angle = GriddedProp(name='angle',
units='radians',
time=None,
grid=self.grid,
data=df['angle'])
def at(self, points, time, units=None, depth=-1, extrapolate=False):
'''
Find the value of the property at positions P at time T
:param points: Coordinates to be queried (P)
:param time: The time at which to query these points (T)
:param depth: Specifies the depth level of the variable
:param units: units the values will be returned in (or converted to)
:param extrapolate: if True, extrapolation will be supported
:type points: Nx2 array of double
:type time: datetime.datetime object
:type depth: integer
:type units: string such as ('m/s', 'knots', etc)
:type extrapolate: boolean (True or False)
:return: returns a Nx2 array of interpolated values
:rtype: double
'''
value = super(GridWind, self).at(points,
time,
units,
extrapolate=extrapolate)
if self.angle is not None:
angs = self.angle.at(points, time, extrapolate=extrapolate)
x = value[:, 0] * np.cos(angs) - value[:, 1] * np.sin(angs)
y = value[:, 0] * np.sin(angs) + value[:, 1] * np.cos(angs)
value[:, 0] = x
value[:, 1] = y
return value
pp.pprint(velfromsave)
velfromsave.at(np.array([(0, 0)]), datetime(2000, 1, 1, 0, 0))
url = (
'http://geoport.whoi.edu/thredds/dodsC/clay/usgs/users/jcwarner/Projects/Sandy/triple_nest/00_dir_NYB05.ncml'
)
test_grid = pysgrid.load_grid(url)
grid_u = test_grid.u
grid_v = test_grid.v
grid_time = test_grid.ocean_time._data
u2 = GriddedProp('u',
'm/s',
time=grid_time,
data=grid_u,
grid=test_grid,
data_file=url,
grid_file=url)
v2 = GriddedProp('v',
'm/s',
time=grid_time,
data=grid_v,
grid=test_grid,
data_file=url,
grid_file=url)
print "got here"
# pp.pprint(vel2.serialize())
class GridWind(VelocityGrid, Environment):
_ref_as = 'wind'
default_names = [['air_u', 'air_v'], ['Air_U', 'Air_V'], ['air_ucmp', 'air_vcmp'], ['wind_u', 'wind_v']]
def __init__(self,
name=None,
units=None,
time=None,
variables=None,
grid=None,
grid_file=None,
data_file=None,
dataset=None,
**kwargs):
VelocityGrid.__init__(self,
name=name,
units=units,
time=time,
variables=variables,
grid=grid,
grid_file=grid_file,
data_file=data_file,
dataset=dataset)
self.angle = None
df = None
if dataset is not None:
df = dataset
elif grid_file is not None:
df = _get_dataset(grid_file)
if df is not None and 'angle' in df.variables.keys():
# Unrotated ROMS Grid!
self.angle = GriddedProp(name='angle', units='radians', time=None, grid=self.grid, data=df['angle'])
def at(self, points, time, units=None, depth=-1, extrapolate=False, **kwargs):
'''
Find the value of the property at positions P at time T
:param points: Coordinates to be queried (P)
:param time: The time at which to query these points (T)
:param depth: Specifies the depth level of the variable
:param units: units the values will be returned in (or converted to)
:param extrapolate: if True, extrapolation will be supported
:type points: Nx2 array of double
:type time: datetime.datetime object
:type depth: integer
:type units: string such as ('m/s', 'knots', etc)
:type extrapolate: boolean (True or False)
:return: returns a Nx2 array of interpolated values
:rtype: double
'''
mem = kwargs['memoize'] if 'memoize' in kwargs else True
_hash = kwargs['_hash'] if '_hash' in kwargs else None
if _hash is None:
_hash = self._get_hash(points, time)
if '_hash' not in kwargs:
kwargs['_hash'] = _hash
if mem:
res = self._get_memoed(points, time, self._result_memo, _hash=_hash)
if res is not None:
return res
value = super(GridWind, self).at(points, time, units, extrapolate=extrapolate, **kwargs)
if self.angle is not None:
angs = self.angle.at(points, time, extrapolate=extrapolate, **kwargs)
x = value[:, 0] * np.cos(angs) - value[:, 1] * np.sin(angs)
y = value[:, 0] * np.sin(angs) + value[:, 1] * np.cos(angs)
value[:, 0] = x
value[:, 1] = y
if mem:
self._memoize_result(points, time, value, self._result_memo, _hash=_hash)
return value