def __call__(self, *args, **kwargs):
"""Call the compositor."""
from satpy import Scene
# Check if filename exists, if not then try from SATPY_ANCPATH
if not os.path.isfile(self.filename):
tmp_filename = os.path.join(get_environ_ancpath(), self.filename)
if os.path.isfile(tmp_filename):
self.filename = tmp_filename
scn = Scene(reader='generic_image', filenames=[self.filename])
scn.load(['image'])
img = scn['image']
# use compositor parameters as extra metadata
# most important: set 'name' of the image
img.attrs.update(self.attrs)
# Check for proper area definition. Non-georeferenced images
# do not have `area` in the attributes
if 'area' not in img.attrs:
if self.area is None:
raise AttributeError("Area definition needs to be configured")
img.attrs['area'] = self.area
img.attrs['sensor'] = None
img.attrs['mode'] = ''.join(img.bands.data)
img.attrs.pop('modifiers', None)
img.attrs.pop('calibration', None)
# Add start time if not present in the filename
if 'start_time' not in img.attrs or not img.attrs['start_time']:
import datetime as dt
img.attrs['start_time'] = dt.datetime.utcnow()
if 'end_time' not in img.attrs or not img.attrs['end_time']:
import datetime as dt
img.attrs['end_time'] = dt.datetime.utcnow()
return img
def __init__(self, *args, **kwargs):
"""Initialize the compositor with values from the user or from the configuration file.
If `dem_filename` can't be found or opened then correction is done
assuming TOA or sealevel options.
:param dem_filename: path to the ancillary 'averaged heights' file
default: CMGDEM.hdf
environment override: os.path.join(<SATPY_ANCPATH>, <CREFL_ANCFILENAME>)
:param dem_sds: variable name to load from the ancillary file
"""
dem_filename = kwargs.pop(
"dem_filename", os.environ.get("CREFL_ANCFILENAME", "CMGDEM.hdf"))
if os.path.exists(dem_filename):
self.dem_file = dem_filename
else:
self.dem_file = os.path.join(get_environ_ancpath(), dem_filename)
self.dem_sds = kwargs.pop("dem_sds", "averaged elevation")
super(ReflectanceCorrector, self).__init__(*args, **kwargs)
def __init__(self, *args, **kwargs):
"""Initialize the compositor with values from the user or from the configuration file.
If `dem_filename` can't be found or opened then correction is done
assuming TOA or sealevel options.
:param dem_filename: path to the ancillary 'averaged heights' file
default: CMGDEM.hdf
environment override: os.path.join(<SATPY_ANCPATH>, <CREFL_ANCFILENAME>)
:param dem_sds: variable name to load from the ancillary file
"""
dem_filename = kwargs.pop("dem_filename",
os.environ.get("CREFL_ANCFILENAME",
"CMGDEM.hdf"))
if os.path.exists(dem_filename):
self.dem_file = dem_filename
else:
self.dem_file = os.path.join(get_environ_ancpath(), dem_filename)
self.dem_sds = kwargs.pop("dem_sds", "averaged elevation")
super(ReflectanceCorrector, self).__init__(*args, **kwargs)
