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add naming to geoms #12

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cc4b3e3
add naming to geoms
Sebastian-Belkner Mar 6, 2024
9042f3f
add docstring
Sebastian-Belkner Mar 6, 2024
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17 changes: 10 additions & 7 deletions lenspyx/remapping/utils_geom.py
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Original file line number Diff line number Diff line change
Expand Up @@ -22,7 +22,7 @@ def st2mmax(spin, tht, lmax):


class Geom:
def __init__(self, theta:np.ndarray[float], phi0:np.ndarray[float], nphi:np.ndarray[np.uint64], ringstart:np.ndarray[np.uint64], w:np.ndarray[float]):
def __init__(self, theta:np.ndarray[float], phi0:np.ndarray[float], nphi:np.ndarray[np.uint64], ringstart:np.ndarray[np.uint64], w:np.ndarray[float], name='unnamed'):
"""Iso-latitude pixelisation of the sphere

Args:
Expand All @@ -31,6 +31,7 @@ def __init__(self, theta:np.ndarray[float], phi0:np.ndarray[float], nphi:np.ndar
nphi: number of pixels in each ring
ringstart: index of first pixel of each ring in real space map
w: quadrature weight for each ring (used for SHT of 'analysis'-type )
name: identifier for the geometry, used for e.g. debugging


"""
Expand All @@ -43,6 +44,7 @@ def __init__(self, theta:np.ndarray[float], phi0:np.ndarray[float], nphi:np.ndar
self.phi0 = phi0[argsort].astype(np.float64)
self.nph = nphi[argsort].astype(np.uint64)
self.ofs = ringstart[argsort].astype(np.uint64)
self.name = name

def npix(self):
"""Number of pixels
Expand Down Expand Up @@ -103,7 +105,7 @@ def thinout(self, spin, good_size_real=True):
nphi_eq = np.array([good_size(int(np.ceil(stx / dph_eq)), good_size_real) for stx in st])
nph = np.where((st / nph) > dph_eq, nphi_eq, nph)
ofs = np.insert(np.cumsum(nph[:-1]), 0, 0)
return Geom(tht, self.phi0, nph, ofs, self.weight / nph * self.nph)
return Geom(tht, self.phi0, nph, ofs, self.weight / nph * self.nph, name='thinout')

def split(self, nbands, verbose=False):
"""Split the pixelization into chunks
Expand Down Expand Up @@ -146,6 +148,7 @@ def synthesis(self, gclm: np.ndarray, spin:int, lmax:int, mmax:int, nthreads:int

"""
gclm = np.atleast_2d(gclm)
print(gclm.shape, gclm.dtype, gclm)
return synthesis(alm=gclm, theta=self.theta, lmax=lmax, mmax=mmax, nphi=self.nph, spin=spin, phi0=self.phi0,
nthreads=nthreads, ringstart=self.ofs, map=map, **kwargs)

Expand Down Expand Up @@ -256,7 +259,7 @@ def get_thingauss_geometry(lmax:int, smax:int, good_size_real=True):
mmax = np.minimum(np.maximum(st2mmax(smax, tht, lmax), st2mmax(-smax, tht, lmax)), np.ones(nlat) * lmax)
nph = np.array([good_size(int(np.ceil(2 * m + 1)), good_size_real) for m in mmax])
ofs = np.insert(np.cumsum(nph[:-1]), 0, 0)
return Geom(tht, phi0, nph, ofs, wt / nph)
return Geom(tht, phi0, nph, ofs, wt / nph, name='thinguass')

@staticmethod
def get_healpix_geometry(nside:int):
Expand All @@ -270,7 +273,7 @@ def get_healpix_geometry(nside:int):
base = ducc0.healpix.Healpix_Base(nside, "RING")
geom = base.sht_info()
area = (4 * np.pi) / (12 * nside ** 2)
return Geom(w=np.full((geom['theta'].size, ), area), **geom)
return Geom(w=np.full((geom['theta'].size, ), area), **geom, name='healpix')

@staticmethod
def get_cc_geometry(ntheta:int, nphi:int):
Expand Down Expand Up @@ -308,7 +311,7 @@ def get_f1_geometry(ntheta:int, nphi:int):
nph = np.full((ntheta,), nphi, dtype=np.uint64)
ofs = np.insert(np.cumsum(nph[:-1]), 0, 0)
w = ducc0.sht.experimental.get_gridweights('F1', ntheta)
return Geom(tht, phi0, nph, ofs, w / nphi)
return Geom(tht, phi0, nph, ofs, w / nphi, name='f1')


@staticmethod
Expand All @@ -329,7 +332,7 @@ def get_gl_geometry(lmax:int, good_size_real=True, nphi:int or None =None):
phi0 = np.zeros(nlatf, dtype=float)
nph = np.full((nlatf,), nphi, dtype=np.uint64)
ofs = np.insert(np.cumsum(nph[:-1]), 0, 0)
return Geom(tht, phi0, nph, ofs, wt / nph)
return Geom(tht, phi0, nph, ofs, wt / nph, name='gl')

@staticmethod
def get_tgl_geometry(lmax:int, smax:int, good_size_real=True):
Expand All @@ -342,7 +345,7 @@ def get_tgl_geometry(lmax:int, smax:int, good_size_real=True):
(very slightly more points if set but largely inconsequential)

"""
return Geom.get_thingauss_geometry(lmax, smax, good_size_real=good_size_real)
return Geom.get_thingauss_geometry(lmax, smax, good_size_real=good_size_real, name='tgl')


class pbounds:
Expand Down