def load_hdu(self, hdu, dstobj=None, **kwargs):
typ = self.get_hdu_type(hdu)
if typ == 'image':
# <-- data is an image
ahdr = AstroHeader()
self.fromHDU(hdu, ahdr)
metadata = dict(header=ahdr)
data = hdu.read()
if dstobj is None:
dstobj = AstroImage(logger=self.logger)
dstobj.load_data(data, metadata=metadata)
else:
dstobj.load_data(data, metadata=metadata)
elif typ == 'table':
# <-- data is a table
raise FITSError(
"FITS tables are not yet readable using ginga/fitsio")
dstobj.io = self
return dstobj
def load_hdu(self, hdu, dstobj=None, **kwargs):
typ = self.get_hdu_type(hdu)
if typ == 'image':
if dstobj is None:
dstobj = AstroImage(logger=self.logger)
dstobj.load_hdu(hdu, **kwargs)
else:
# TODO: migrate code from AstroImage to here
dstobj.load_hdu(hdu, **kwargs)
elif typ == 'table':
# <-- data may be a table
if hdu.name == 'ASDF':
if dstobj is not None:
raise ValueError(
"It is not supported to load ASDF HDU with dstobj != None"
)
self.logger.debug('Attempting to load {} extension from '
'FITS'.format(hdu.name))
from ginga.util.io import io_asdf
opener = io_asdf.ASDFFileHandler(self.logger)
return opener.load_asdf_hdu_in_fits(self.fits_f, hdu, **kwargs)
if dstobj is None:
dstobj = AstroTable(logger=self.logger)
self.logger.debug('Attempting to load table from FITS')
# TODO: migrate code from AstroTable to here
dstobj.load_hdu(hdu, **kwargs)
else:
raise FITSError("I don't know how to read this HDU")
dstobj.io = self
return dstobj
