healpy.pixelfunc.order2nside¶
- healpy.pixelfunc.order2nside(order)¶
Give the nside parameter for the given resolution order.
- Parameters:
- orderint
the resolution order
- Returns:
- nsideint
the nside parameter corresponding to order
Notes
Raise a ValueError exception if order produces an nside out of range.
Examples
>>> import healpy as hp >>> hp.order2nside(7) 128
>>> print(hp.order2nside(np.arange(8))) [ 1 2 4 8 16 32 64 128]
>>> hp.order2nside(31) Traceback (most recent call last): ... ValueError: 2147483648 is not a valid nside parameter (must be a power of 2, less than 2**30)