def prepare_metadata(meta_file, geom_src_dir, box=None):
print('-'*50)
# extract metadata from ISCE to MintPy (ROIPAC) format
meta = isce_utils.extract_isce_metadata(meta_file, update_mode=False)[0]
if 'Y_FIRST' in meta.keys():
geom_ext = '.geo.full'
else:
geom_ext = '.rdr.full'
# add LAT/LON_REF1/2/3/4, HEADING, A/RLOOKS
meta = isce_utils.extract_geometry_metadata(geom_src_dir,
metadata=meta,
box=box,
fext_list=[geom_ext])
# add LENGTH / WIDTH
atr = readfile.read_attribute(os.path.join(geom_src_dir, 'lat{}'.format(geom_ext)))
meta['LENGTH'] = atr['LENGTH']
meta['WIDTH'] = atr['WIDTH']
## update metadata due to subset
print('update metadata due to subset with bounding box')
meta = ut.subset_attribute(meta, box)
return meta
def extract_isce_metadata(meta_file,
geom_dir=None,
rsc_file=None,
update_mode=True):
"""Extract metadata from ISCE stack products
Parameters: meta_file : str, path of metadata file, reference/IW1.xml or referenceShelve/data.dat
geom_dir : str, path of geometry directory.
rsc_file : str, output file name of ROIPAC format rsc file
Returns: metadata : dict
"""
if not rsc_file:
rsc_file = os.path.join(os.path.dirname(meta_file), 'data.rsc')
# check existing rsc_file
if update_mode and ut.run_or_skip(
rsc_file, in_file=meta_file, check_readable=False) == 'skip':
return readfile.read_roipac_rsc(rsc_file)
# 1. extract metadata from XML / shelve file
fbase = os.path.basename(meta_file)
if fbase.startswith("IW"):
print('extract metadata from ISCE/topsStack xml file:', meta_file)
#metadata = extract_tops_metadata(meta_file)[0]
metadata = isce_utils.extract_tops_metadata(meta_file)[0]
metadata['sensor_type'] = 'tops'
elif fbase.startswith("data"):
print('extract metadata from ISCE/stripmapStack shelve file:',
meta_file)
#metadata = extract_stripmap_metadata(meta_file)[0]
metadata = isce_utils.extract_stripmap_metadata(meta_file)[0]
metadata['sensor_type'] = 'stripmap'
elif fbase.endswith(".xml"):
#metadata = extract_stripmap_metadata(meta_file)[0]
metadata = isce_utils.extract_stripmap_metadata(meta_file)[0]
else:
raise ValueError(
"unrecognized ISCE metadata file: {}".format(meta_file))
# 2. extract metadata from geometry file
if geom_dir:
metadata = isce_utils.extract_geometry_metadata(geom_dir, metadata)
# 3. common metadata
metadata['PROCESSOR'] = 'isce'
metadata['ANTENNA_SIDE'] = '-1'
# convert all value to string format
for key, value in metadata.items():
metadata[key] = str(value)
# write to .rsc file
metadata = readfile.standardize_metadata(metadata)
if rsc_file:
print('writing ', rsc_file)
writefile.write_roipac_rsc(metadata, rsc_file)
return metadata
def prepare_metadata(meta_file, geom_src_dir, box=None, nlks_x=1, nlks_y=1):
print('-' * 50)
# extract metadata from ISCE to MintPy (ROIPAC) format
meta = isce_utils.extract_isce_metadata(meta_file, update_mode=False)[0]
if 'Y_FIRST' in meta.keys():
geom_ext = '.geo.full'
else:
geom_ext = '.rdr.full'
# add LAT/LON_REF1/2/3/4, HEADING, A/RLOOKS
meta = isce_utils.extract_geometry_metadata(geom_src_dir,
meta=meta,
box=box,
fext_list=[geom_ext])
# add LENGTH / WIDTH
atr = readfile.read_attribute(
os.path.join(geom_src_dir, 'lat{}'.format(geom_ext)))
meta['LENGTH'] = atr['LENGTH']
meta['WIDTH'] = atr['WIDTH']
## update metadata due to subset
print('update metadata due to subset with bounding box')
meta = attr.update_attribute4subset(meta, box)
# apply optional user multilooking
if nlks_x > 1:
meta['RANGE_PIXEL_SIZE'] = str(
float(meta['RANGE_PIXEL_SIZE']) * nlks_x)
meta['RLOOKS'] = str(float(meta['RLOOKS']) * nlks_x)
if nlks_y > 1:
meta['AZIMUTH_PIXEL_SIZE'] = str(
float(meta['AZIMUTH_PIXEL_SIZE']) * nlks_y)
meta['ALOOKS'] = str(float(meta['ALOOKS']) * nlks_y)
return meta