gistfile1.txt

In [5]: maps.HpxMapND.read('http://gamma-astro-data-formats.readthedocs.io/en/latest/_downloads/hpx_ccube_implicit.fits')
---------------------------------------------------------------------------
ValueError                                Traceback (most recent call last)
<ipython-input-5-aade25c1e381> in <module>()
----> 1 maps.HpxMapND.read('http://gamma-astro-data-formats.readthedocs.io/en/latest/_downloads/hpx_ccube_implicit.fits')

~/code/gammapy/gammapy/maps/base.py in read(cls, filename, **kwargs)
    124         """
    125         with fits.open(filename) as hdulist:
--> 126             map_out = cls.from_hdulist(hdulist, **kwargs)
    127         return map_out
    128 

~/code/gammapy/gammapy/maps/hpxmap.py in from_hdulist(cls, hdulist, hdu, hdu_bands)
    118             hdu_bands = hdulist[hdu_bands]
    119 
--> 120         return cls.from_hdu(hdu, hdu_bands)
    121 
    122     def to_hdulist(self, **kwargs):

~/code/gammapy/gammapy/maps/hpxcube.py in from_hdu(cls, hdu, hdu_bands)
     62             The BANDS table HDU
     63         """
---> 64         hpx = HpxGeom.from_header(hdu.header, hdu_bands)
     65         shape = tuple([ax.nbin for ax in hpx.axes[::-1]])
     66         shape_data = shape + tuple([np.max(hpx.npix)])

~/code/gammapy/gammapy/maps/hpx.py in from_header(cls, header, hdu_bands, pix)
    997 
    998         if hdu_bands is not None and 'NSIDE' in hdu_bands.columns.names:
--> 999             nside = hdu_bands.data.field('NSIDE').reshape(shape).astype(int)
   1000         elif 'NSIDE' in header:
   1001             nside = header['NSIDE']

ValueError: cannot reshape array of size 4 into shape ()