def _init_attributes(self):
''' Initialize some attributes '''
self.ra = None
self.dec = None
# try to create a header
try:
self.header = fits.header.Header(self.data.info)
except Exception:
warnings.warn('No proper header found image', MarvinUserWarning)
self.header = None
# try to set the RA, Dec
if self.header:
self.ra = float(self.header["RA"]) if 'RA' in self.header else None
self.dec = float(
self.header["DEC"]) if 'DEC' in self.header else None
# try to set the WCS
try:
self.wcs = getWCSFromPng(image=self.data)
except MarvinError:
self.wcs = None
warnings.warn('No proper WCS info for this image')
def test_image_has_wcs(self):
w = getWCSFromPng(self.filename)
self.assertEqual(type(w), WCS)
def test_image_has_wcs(self, galaxy):
w = getWCSFromPng(galaxy.imgpath)
assert isinstance(w, WCS) is True