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satpy.py
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satpy.py
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from iris.coords import AuxCoord
from iris.cube import Cube
def scene_examples():
from datetime import datetime
from satpy.scene import Scene
scn = Scene(
platform_name="SNPP",
sensor="viirs",
start_time=datetime(2015, 4, 20, 12, 3),
end_time=datetime(2015, 4, 20, 12, 10),
base_dir="/home/a000680/data/polar_in/direct_readout/npp/lvl1/npp_20150420_1202_18019",
reader="viirs_sdr"
)
scn.load(['M05', 'M08', 'M15'])
met10scn = Scene(
sensor="seviri",
base_dir="/home/a000680/data/hrit/20150420",
reader="hrit_msg"
)
met10scn.load([0.6, 0.8, 11.0])
return
def scene_to_iris(scn, var_name):
data = scn[var_name]
area = data.info['area']
units = data.info['units']
lats = AuxCoord(area.lats, standard_name='latitude', units='degrees')
lons = AuxCoord(area.lons, standard_name='longitude', units='degrees')
cube = Cube(data, units=units, aux_coords_and_dims=[(lats, (0, 1)), (lons, (0, 1))], long_name=data.info['name'])
return cube
def scene_to_cis(scn):
from cis.data_io.Coord import Coord
from cis.data_io.ungridded_data import Metadata, UngriddedData
data = scn['M05']
area = data.info['area']
units = data.info['units']
lats = Coord(
area.lats, Metadata(standard_name='latitude', units='degrees'), 'y')
lons = Coord(
area.lons, Metadata(standard_name='longitude', units='degrees'), 'x')
print(area.lons.info)
ug = UngriddedData(data, Metadata(name=data.info['name'], units=units), [lats, lons])
return ug
if __name__ == '__main__':
pass
# sub_seviri = ug_seviri.subset(x=[10, 12], y=[43, 45])
# sub = ug.subset(x=[10, 12], y=[43, 45])
#
# col = sub_seviri.sampled_from(sub, kernel='nn_horizontal', h_sep=5.0)
#
# import matplotlib.pyplot as plt
# import matplotlib as mpl
# mpl.rcParams['agg.path.chunksize'] = 10000
#
# ll = UngriddedDataList([col[0], sub_seviri])
# ax = ll.plot(how='histogram2d')
# ax.set_xlim(0, 40)
# ax.set_ylim(0, 40)
# plt.show()