def test_eraint(self):
f = get_demo_file('era_interim_tibet.nc')
d = GeoNetcdf(f)
assert d.grid.origin == 'upper-left'
stat_lon = 91.1
stat_lat = 31.1
with netCDF4.Dataset(f) as nc:
nc.set_auto_mask(False)
flon = nc.variables['longitude'][:]
flat = nc.variables['latitude'][:]
alon = np.argmin(np.abs(flon - stat_lon))
alat = np.argmin(np.abs(flat - stat_lat))
d.set_subset(corners=((stat_lon, stat_lat), (stat_lon, stat_lat)))
slon, slat = d.grid.ll_coordinates
assert_array_equal(flon[alon], slon)
assert_allclose(flat[alat], slat)
# Exotic subset
assert_array_equal(flon[alon], d.get_vardata('longitude'))
assert_allclose(flat[alat], d.get_vardata('latitude'))
assert_allclose(nc.variables['t2m'][:, alat, alon],
np.squeeze(d.get_vardata('t2m')))
d.set_period(t0='2012-06-01 06:00:00', t1='2012-06-01 12:00:00')
assert_allclose(nc.variables['t2m'][1:3, alat, alon],
np.squeeze(d.get_vardata('t2m')))
def test_eraint(self):
f = get_demo_file("era_interim_tibet.nc")
d = GeoNetcdf(f)
assert d.grid.order == "ul"
stat_lon = 91.1
stat_lat = 31.1
nc = netCDF4.Dataset(f)
flon = nc.variables["longitude"][:]
flat = nc.variables["latitude"][:]
alon = np.argmin(np.abs(flon - stat_lon))
alat = np.argmin(np.abs(flat - stat_lat))
d.set_subset(corners=((stat_lon, stat_lat), (stat_lon, stat_lat)))
slon, slat = d.grid.ll_coordinates
assert_array_equal(flon[alon], slon)
assert_allclose(flat[alat], slat)
# Exotic subset
assert_array_equal(flon[alon], d.get_vardata("longitude"))
assert_allclose(flat[alat], d.get_vardata("latitude"))
assert_allclose(nc.variables["t2m"][:, alat, alon], np.squeeze(d.get_vardata("t2m")))
d.set_period(t0="2012-06-01 06:00:00", t1="2012-06-01 12:00:00")
assert_allclose(nc.variables["t2m"][1:3, alat, alon], np.squeeze(d.get_vardata("t2m")))
def test_as_xarray(self):
f = get_demo_file('era_interim_tibet.nc')
d = GeoNetcdf(f)
t2 = d.get_vardata('t2m', as_xarray=True)
stat_lon = 91.1
stat_lat = 31.1
d.set_subset(corners=((stat_lon, stat_lat), (stat_lon, stat_lat)))
t2_sub = d.get_vardata('t2m', as_xarray=True)
np.testing.assert_allclose(t2_sub - t2, np.zeros(4).reshape((4, 1, 1)))
d.set_period(t0='2012-06-01 06:00:00', t1='2012-06-01 12:00:00')
t2_sub = d.get_vardata('t2m', as_xarray=True)
np.testing.assert_allclose(t2_sub - t2, np.zeros(2).reshape((2, 1, 1)))
wf = get_demo_file('wrf_cropped.nc')
d = WRF(wf)
tk = d.get_vardata('TK', as_xarray=True)
def test_as_xarray(self):
f = get_demo_file("era_interim_tibet.nc")
d = GeoNetcdf(f)
t2 = d.get_vardata("t2m", as_xarray=True)
stat_lon = 91.1
stat_lat = 31.1
d.set_subset(corners=((stat_lon, stat_lat), (stat_lon, stat_lat)))
t2_sub = d.get_vardata("t2m", as_xarray=True)
np.testing.assert_allclose(t2_sub - t2, np.zeros(4).reshape((4, 1, 1)))
d.set_period(t0="2012-06-01 06:00:00", t1="2012-06-01 12:00:00")
t2_sub = d.get_vardata("t2m", as_xarray=True)
np.testing.assert_allclose(t2_sub - t2, np.zeros(2).reshape((2, 1, 1)))
wf = get_demo_file("wrf_cropped.nc")
d = WRF(wf)
tk = d.get_vardata("TK", as_xarray=True)
def test_wrf(self):
"""Open WRF, do subsets and stuff"""
fs = get_demo_file('chinabang.shp')
for d in ['1', '2']:
fw = get_demo_file('wrf_tip_d{}.nc'.format(d))
d = GeoNetcdf(fw)
self.assertTrue(isinstance(d, GeoDataset))
mylon, mylat = d.grid.ll_coordinates
reflon = d.get_vardata('XLONG')
reflat = d.get_vardata('XLAT')
np.testing.assert_allclose(reflon, mylon, rtol=0.000001)
np.testing.assert_allclose(reflat, mylat, rtol=0.00001)
d.set_roi(shape=fs)
np.testing.assert_array_equal(d.get_vardata('roi'), d.roi)
d1 = GeoNetcdf(get_demo_file('wrf_tip_d1.nc'))
d2 = GeoNetcdf(get_demo_file('wrf_tip_d2.nc'))
# Auto dimensions
self.assertTrue(d1.t_dim == 'Time')
self.assertTrue(d1.x_dim == 'west_east')
self.assertTrue(d1.y_dim == 'south_north')
self.assertTrue(d1.z_dim is None)
#Time
assert_array_equal(
d1.time,
pd.to_datetime([datetime(2005, 9, 21),
datetime(2005, 9, 21, 3)]))
assert_array_equal(
d2.time,
pd.to_datetime([datetime(2005, 9, 21),
datetime(2005, 9, 21, 1)]))
bef = d2.get_vardata('T2')
d2.set_period(t0=datetime(2005, 9, 21, 1))
assert_array_equal(bef[[1], ...], d2.get_vardata('T2'))
d2.set_period()
assert_array_equal(bef, d2.get_vardata('T2'))
d2.set_period(t1=datetime(2005, 9, 21, 0))
assert_array_equal(bef[[0], ...], d2.get_vardata('T2'))
# ROIS
d1.set_roi(grid=d2.grid)
d1.set_subset(toroi=True)
self.assertEqual(d1.grid.nx * 3, d2.grid.nx)
self.assertEqual(d1.grid.ny * 3, d2.grid.ny)
self.assertTrue(np.min(d1.roi) == 1)
mylon, mylat = d1.grid.ll_coordinates
reflon = d1.get_vardata('XLONG')
reflat = d1.get_vardata('XLAT')
np.testing.assert_allclose(reflon, mylon, atol=1e-4)
np.testing.assert_allclose(reflat, mylat, atol=1e-4)
reflon = d2.get_vardata('XLONG')[1::3, 1::3]
reflat = d2.get_vardata('XLAT')[1::3, 1::3]
np.testing.assert_allclose(reflon, mylon, atol=1e-4)
np.testing.assert_allclose(reflat, mylat, atol=1e-4)
# Mercator
d = GeoNetcdf(get_demo_file('wrf_mercator.nc'))
mylon, mylat = d.grid.ll_coordinates
reflon = np.squeeze(d.get_vardata('XLONG'))
reflat = np.squeeze(d.get_vardata('XLAT'))
np.testing.assert_allclose(reflon, mylon, atol=1e-5)
np.testing.assert_allclose(reflat, mylat, atol=1e-5)
# Test xarray
ds = xr.open_dataset(get_demo_file('wrf_mercator.nc'))
mylon, mylat = ds.salem.grid.ll_coordinates
np.testing.assert_allclose(reflon, mylon, atol=1e-5)
np.testing.assert_allclose(reflat, mylat, atol=1e-5)
d = GeoNetcdf(get_demo_file('wrf_tip_d1.nc'))
reflon = np.squeeze(d.get_vardata('XLONG'))
reflat = np.squeeze(d.get_vardata('XLAT'))
ds = xr.open_dataset(get_demo_file('wrf_tip_d1.nc'))
mylon, mylat = ds.salem.grid.ll_coordinates
np.testing.assert_allclose(reflon, mylon, atol=1e-4)
np.testing.assert_allclose(reflat, mylat, atol=1e-4)
def test_wrf(self):
"""Open WRF, do subsets and stuff"""
fs = get_demo_file("chinabang.shp")
for d in ["1", "2"]:
fw = get_demo_file("wrf_tip_d{}.nc".format(d))
d = GeoNetcdf(fw)
self.assertTrue(isinstance(d, GeoDataset))
mylon, mylat = d.grid.ll_coordinates
reflon = d.get_vardata("XLONG")
reflat = d.get_vardata("XLAT")
np.testing.assert_allclose(reflon, mylon, rtol=0.000001)
np.testing.assert_allclose(reflat, mylat, rtol=0.00001)
d.set_roi(shape=fs)
np.testing.assert_array_equal(d.get_vardata("roi"), d.roi)
d1 = GeoNetcdf(get_demo_file("wrf_tip_d1.nc"))
d2 = GeoNetcdf(get_demo_file("wrf_tip_d2.nc"))
# Auto dimensions
self.assertTrue(d1.t_dim == "Time")
self.assertTrue(d1.x_dim == "west_east")
self.assertTrue(d1.y_dim == "south_north")
self.assertTrue(d1.z_dim is None)
# Time
assert_array_equal(d1.time, pd.to_datetime([datetime(2005, 9, 21), datetime(2005, 9, 21, 3)]))
assert_array_equal(d2.time, pd.to_datetime([datetime(2005, 9, 21), datetime(2005, 9, 21, 1)]))
bef = d2.get_vardata("T2")
d2.set_period(t0=datetime(2005, 9, 21, 1))
assert_array_equal(bef[[1], ...], d2.get_vardata("T2"))
d2.set_period()
assert_array_equal(bef, d2.get_vardata("T2"))
d2.set_period(t1=datetime(2005, 9, 21, 0))
assert_array_equal(bef[[0], ...], d2.get_vardata("T2"))
# ROIS
d1.set_roi(grid=d2.grid)
d1.set_subset(toroi=True)
self.assertEqual(d1.grid.nx * 3, d2.grid.nx)
self.assertEqual(d1.grid.ny * 3, d2.grid.ny)
self.assertTrue(np.min(d1.roi) == 1)
mylon, mylat = d1.grid.ll_coordinates
reflon = d1.get_vardata("XLONG")
reflat = d1.get_vardata("XLAT")
np.testing.assert_allclose(reflon, mylon, atol=1e-4)
np.testing.assert_allclose(reflat, mylat, atol=1e-4)
reflon = d2.get_vardata("XLONG")[1::3, 1::3]
reflat = d2.get_vardata("XLAT")[1::3, 1::3]
np.testing.assert_allclose(reflon, mylon, atol=1e-4)
np.testing.assert_allclose(reflat, mylat, atol=1e-4)
# Mercator
d = GeoNetcdf(get_demo_file("wrf_mercator.nc"))
mylon, mylat = d.grid.ll_coordinates
reflon = np.squeeze(d.get_vardata("XLONG"))
reflat = np.squeeze(d.get_vardata("XLAT"))
np.testing.assert_allclose(reflon, mylon, atol=1e-5)
np.testing.assert_allclose(reflat, mylat, atol=1e-5)
# Test xarray
ds = xr.open_dataset(get_demo_file("wrf_mercator.nc"))
mylon, mylat = ds.salem.grid.ll_coordinates
np.testing.assert_allclose(reflon, mylon, atol=1e-5)
np.testing.assert_allclose(reflat, mylat, atol=1e-5)
d = GeoNetcdf(get_demo_file("wrf_tip_d1.nc"))
reflon = np.squeeze(d.get_vardata("XLONG"))
reflat = np.squeeze(d.get_vardata("XLAT"))
ds = xr.open_dataset(get_demo_file("wrf_tip_d1.nc"))
mylon, mylat = ds.salem.grid.ll_coordinates
np.testing.assert_allclose(reflon, mylon, atol=1e-4)
np.testing.assert_allclose(reflat, mylat, atol=1e-4)
