def test_toeplitz_02(self):
l_toeplitz = self.nside
l_exact = self.nside // 2
dl_band = self.nside // 4
we = nmt.NmtWorkspace()
we.compute_coupling_matrix(self.f0, self.f2, self.b)
ce = we.get_coupling_matrix().reshape([3*self.nside, 2,
3*self.nside, 2])
ce = ce[:, 0, :, 0]
wt = nmt.NmtWorkspace()
wt.compute_coupling_matrix(self.f0, self.f2, self.b,
l_toeplitz=l_toeplitz,
l_exact=l_exact,
dl_band=dl_band)
ct = wt.get_coupling_matrix().reshape([3*self.nside, 2,
3*self.nside, 2])
ct = ct[:, 0, :, 0]
# Check that the approximate matrix is constructed
# as expected.
self.compare_toeplitz(ce, ct,
l_toeplitz, l_exact, dl_band)
# Check that it's not a bad approximation (0.5% for these ells)
cle = we.decouple_cell(nmt.compute_coupled_cell(self.f0, self.f2))
clt = wt.decouple_cell(nmt.compute_coupled_cell(self.f0, self.f2))
self.assertTrue(np.all(np.fabs(clt[0]/cle[0]-1) < 5E-3))
def mastest(self):
f0 = nmt.NmtField(self.msk, [self.mps[0]], wcs=self.wcs, n_iter=0)
f2 = nmt.NmtField(self.msk, [self.mps[1], self.mps[2]],
wcs=self.wcs,
n_iter=0)
f = [f0, f2]
for ip1 in range(2):
for ip2 in range(ip1, 2):
if ip1 == ip2 == 0:
cl_bm = np.array([self.cltt])
elif ip1 == ip2 == 1:
cl_bm = np.array(
[self.clee, self.cleb, self.cleb, self.clbb])
else:
cl_bm = np.array([self.clte, self.cltb])
w = nmt.NmtWorkspace()
w.compute_coupling_matrix(f[ip1], f[ip2], self.b)
cl = w.decouple_cell(nmt.compute_coupled_cell(f[ip1], f[ip2]))
self.assertTrue(np.amax(np.fabs(cl - cl_bm)) <= 1E-10)
# TEB
w = nmt.NmtWorkspace()
w.compute_coupling_matrix(f[0], f[1], self.b, is_teb=True)
c00 = nmt.compute_coupled_cell(f[0], f[0])
c02 = nmt.compute_coupled_cell(f[0], f[1])
c22 = nmt.compute_coupled_cell(f[1], f[1])
cl = w.decouple_cell(
np.array([c00[0], c02[0], c02[1], c22[0], c22[1], c22[2], c22[3]]))
cl_bm = np.array([
self.cltt, self.clte, self.cltb, self.clee, self.cleb, self.cleb,
self.clbb
])
self.assertTrue(np.amax(np.fabs(cl - cl_bm)) <= 1E-10)
def load_from_dir(self, mcm_dir):
"""Read information from a nawrapper mode coupling directory."""
with open(os.path.join(mcm_dir, "mcm.json"), "r") as read_file:
data = json.load(read_file)
# convert lists into numpy arrays
for bk in ["ells", "bpws", "weights"]:
data["bin_kwargs"][bk] = np.array(data["bin_kwargs"][bk])
self.bins = nabin(**data["bin_kwargs"])
self.lb = self.bins.get_effective_ells()
self.workspace_dict = {}
if "w00" in data:
self.w00 = nmt.NmtWorkspace()
self.w00.read_from(os.path.join(mcm_dir, data["w00"]))
self.workspace_dict[(0, 0)] = self.w00
if "w02" in data:
self.w02 = nmt.NmtWorkspace()
self.w02.read_from(os.path.join(mcm_dir, data["w02"]))
self.workspace_dict[(0, 2)] = self.w02
if "w20" in data:
self.w20 = nmt.NmtWorkspace()
self.w20.read_from(os.path.join(mcm_dir, data["w20"]))
self.workspace_dict[(2, 0)] = self.w20
if "w22" in data:
self.w22 = nmt.NmtWorkspace()
self.w22.read_from(os.path.join(mcm_dir, data["w22"]))
self.workspace_dict[(2, 2)] = self.w22
def test_field_masked(self):
nside = 64
b = nmt.NmtBin.from_nside_linear(nside, 16)
msk = hp.read_map("test/benchmarks/msk.fits", verbose=False)
mps = np.array(
hp.read_map("test/benchmarks/mps.fits",
verbose=False,
field=[0, 1, 2]))
mps_msk = np.array([m * msk for m in mps])
f0 = nmt.NmtField(msk, [mps[0]])
f0_msk = nmt.NmtField(msk, [mps_msk[0]], masked_on_input=True)
f2 = nmt.NmtField(msk, [mps[1], mps[2]])
f2_msk = nmt.NmtField(msk, [mps_msk[1], mps_msk[2]],
masked_on_input=True)
w00 = nmt.NmtWorkspace()
w00.compute_coupling_matrix(f0, f0, b)
w02 = nmt.NmtWorkspace()
w02.compute_coupling_matrix(f0, f2, b)
w22 = nmt.NmtWorkspace()
w22.compute_coupling_matrix(f2, f2, b)
def mkcl(w, f, g):
return w.decouple_cell(nmt.compute_coupled_cell(f, g))
c00 = mkcl(w00, f0, f0).flatten()
c02 = mkcl(w02, f0, f2).flatten()
c22 = mkcl(w22, f2, f2).flatten()
c00_msk = mkcl(w00, f0_msk, f0_msk).flatten()
c02_msk = mkcl(w02, f0_msk, f2_msk).flatten()
c22_msk = mkcl(w22, f2_msk, f2_msk).flatten()
self.assertTrue(np.all(np.fabs(c00 - c00_msk) / np.mean(c00) < 1E-10))
self.assertTrue(np.all(np.fabs(c02 - c02_msk) / np.mean(c02) < 1E-10))
self.assertTrue(np.all(np.fabs(c22 - c22_msk) / np.mean(c22) < 1E-10))
def test_toeplitz_22():
l_toeplitz = WT.nside
l_exact = WT.nside // 2
dl_band = WT.nside // 4
we = nmt.NmtWorkspace()
we.compute_coupling_matrix(WT.f2, WT.f2, WT.b)
ce = we.get_coupling_matrix().reshape([3*WT.nside, 4,
3*WT.nside, 4])
ce_pp = ce[:, 0, :, 0]
ce_mm = ce[:, 0, :, 3]
wt = nmt.NmtWorkspace()
wt.compute_coupling_matrix(WT.f2, WT.f2, WT.b,
l_toeplitz=l_toeplitz,
l_exact=l_exact,
dl_band=dl_band)
ct = wt.get_coupling_matrix().reshape([3*WT.nside, 4,
3*WT.nside, 4])
ct_pp = ct[:, 0, :, 0]
ct_mm = ct[:, 0, :, 3]
# Check that the approximate matrix is constructed
# as expected.
compare_toeplitz(ce_pp, ct_pp,
l_toeplitz, l_exact, dl_band)
compare_toeplitz(ce_mm, ct_mm,
l_toeplitz, l_exact, dl_band)
# Check that it's not a bad approximation (0.5% for these ells)
cle = we.decouple_cell(nmt.compute_coupled_cell(WT.f2, WT.f2))
clt = wt.decouple_cell(nmt.compute_coupled_cell(WT.f2, WT.f2))
assert np.all(np.fabs(clt[0]/cle[0]-1) < 5E-3)
def setUp(self):
# This is to avoid showing an ugly warning
# that has nothing to do with pymaster
if (sys.version_info > (3, 1)):
warnings.simplefilter("ignore", ResourceWarning)
self.nside = 64
self.nlb = 16
self.npix = hp.nside2npix(self.nside)
msk = hp.read_map("test/benchmarks/msk.fits", verbose=False)
mps = np.array(
hp.read_map("test/benchmarks/mps.fits",
verbose=False,
field=[0, 1, 2]))
self.b = nmt.NmtBin.from_nside_linear(self.nside, self.nlb)
self.f0 = nmt.NmtField(msk, [mps[0]])
self.f2 = nmt.NmtField(msk, [mps[1], mps[2]])
self.f0_half = nmt.NmtField(msk[:self.npix // 4],
[mps[0, :self.npix // 4]]) # Half nside
self.w = nmt.NmtWorkspace()
self.w.read_from("test/benchmarks/bm_nc_np_w00.fits")
self.w02 = nmt.NmtWorkspace()
self.w02.read_from("test/benchmarks/bm_nc_np_w02.fits")
self.w22 = nmt.NmtWorkspace()
self.w22.read_from("test/benchmarks/bm_nc_np_w22.fits")
cls = np.loadtxt("test/benchmarks/cls_lss.txt", unpack=True)
l, cltt, clee, clbb, clte, nltt, nlee, nlbb, nlte = cls
self.ll = l[:3 * self.nside]
self.cltt = cltt[:3 * self.nside] + nltt[:3 * self.nside]
self.clee = clee[:3 * self.nside] + nlee[:3 * self.nside]
self.clbb = clbb[:3 * self.nside] + nlbb[:3 * self.nside]
self.clte = clte[:3 * self.nside]
def test_workspace_bandpower_windows():
# This tests the bandpower window functions returned by NaMaster
# Compute MCMs
w00 = nmt.NmtWorkspace()
w00.compute_coupling_matrix(WT.f0, WT.f0, WT.b)
w02 = nmt.NmtWorkspace()
w02.compute_coupling_matrix(WT.f0, WT.f2, WT.b)
w22 = nmt.NmtWorkspace()
w22.compute_coupling_matrix(WT.f2, WT.f2, WT.b)
# Create some random theory power spectra
larr = np.arange(3*WT.nside)
cltt = (larr+1.)**-0.8
clee = cltt.copy()
clbb = 0.1*clee
clte = np.sqrt(cltt)*0.01
cltb = 0.1*clte
cleb = 0.01*clbb
# For each spin combination, test that decouple-couple is the
# same as bandpass-convolutions.
def compare_bpw_convolution(cl_th, w):
cl_dec_a = w.decouple_cell(w.couple_cell(cl_th))
bpws = w.get_bandpower_windows()
cl_dec_b = np.einsum('ijkl, kl', bpws, cl_th)
assert (np.amax(np.fabs(cl_dec_a-cl_dec_b)) <= 1E-10)
# 00
compare_bpw_convolution(np.array([cltt]), w00)
compare_bpw_convolution(np.array([clte, cltb]), w02)
compare_bpw_convolution(np.array([clee, cleb, cleb, clbb]), w22)
def test_workspace_full_master():
# Test compute_full_master
w = nmt.NmtWorkspace()
w.compute_coupling_matrix(WT.f0, WT.f0, WT.b) # OK init
w_half = nmt.NmtWorkspace()
w_half.compute_coupling_matrix(WT.f0_half, WT.f0_half, WT.b_half)
c = nmt.compute_full_master(WT.f0, WT.f0, WT.b)
assert c.shape == (1, WT.b.bin.n_bands)
with pytest.raises(RuntimeError): # Incompatible bandpowers
nmt.compute_full_master(WT.f0, WT.f0, WT.b_doub)
with pytest.raises(ValueError): # Incompatible resolutions
nmt.compute_full_master(WT.f0, WT.f0_half, WT.b)
# Passing correct input workspace
w.compute_coupling_matrix(WT.f0, WT.f0, WT.b)
# Computing from correct workspace
c = nmt.compute_full_master(WT.f0, WT.f0, WT.b,
workspace=w)
assert c.shape == (1, WT.b.bin.n_bands)
with pytest.raises(RuntimeError): # Inconsistent workspace
nmt.compute_full_master(WT.f0_half, WT.f0_half,
WT.b_half, workspace=w)
# Incorrect input spectra
with pytest.raises(ValueError):
nmt.compute_full_master(WT.f0, WT.f0, WT.b,
cl_noise=WT.n_bad)
with pytest.raises(ValueError):
nmt.compute_full_master(WT.f0, WT.f0, WT.b,
cl_guess=WT.n_bad)
with pytest.raises(RuntimeError):
nmt.compute_full_master(WT.f0, WT.f0, WT.b,
cl_noise=WT.n_half)
with pytest.raises(RuntimeError):
nmt.compute_full_master(WT.f0, WT.f0, WT.b,
cl_guess=WT.n_half)
def test_unbinned_mcm_io():
f0 = nmt.NmtField(WT.msk, [WT.mps[0]])
w = nmt.NmtWorkspace()
w.compute_coupling_matrix(f0, f0, WT.b)
w.write_to("test/wspc.fits")
assert w.has_unbinned
w1 = nmt.NmtWorkspace()
w1.read_from("test/wspc.fits")
assert w1.has_unbinned
w2 = nmt.NmtWorkspace()
w2.read_from("test/wspc.fits", read_unbinned_MCM=False)
assert w2.has_unbinned is False
with pytest.raises(ValueError):
w2.check_unbinned()
with pytest.raises(ValueError):
w2.write_to("dum")
with pytest.raises(ValueError):
w2.get_coupling_matrix()
with pytest.raises(ValueError):
w2.update_coupling_matrix(None)
with pytest.raises(ValueError):
w2.couple_cell(np.ones([1, 3*WT.nside]))
with pytest.raises(ValueError):
w2.get_bandpower_windows()
os.system("rm test/wspc.fits")
def test_workspace_full_master(self):
# Test compute_full_master
w = nmt.NmtWorkspace()
w.compute_coupling_matrix(self.f0, self.f0, self.b) # OK init
w_half = nmt.NmtWorkspace()
w_half.compute_coupling_matrix(self.f0_half, self.f0_half, self.b_half)
c = nmt.compute_full_master(self.f0, self.f0, self.b)
self.assertEqual(c.shape, (1, self.b.bin.n_bands))
with self.assertRaises(RuntimeError): # Incompatible bandpowers
nmt.compute_full_master(self.f0, self.f0, self.b_doub)
with self.assertRaises(ValueError): # Incompatible resolutions
nmt.compute_full_master(self.f0, self.f0_half, self.b)
# Passing correct input workspace
w.compute_coupling_matrix(self.f0, self.f0, self.b)
# Computing from correct workspace
c = nmt.compute_full_master(self.f0, self.f0, self.b,
workspace=w)
self.assertEqual(c.shape, (1, self.b.bin.n_bands))
with self.assertRaises(RuntimeError): # Inconsistent workspace
nmt.compute_full_master(self.f0_half, self.f0_half,
self.b_half, workspace=w)
# Incorrect input spectra
with self.assertRaises(ValueError):
nmt.compute_full_master(self.f0, self.f0, self.b,
cl_noise=self.n_bad)
with self.assertRaises(ValueError):
nmt.compute_full_master(self.f0, self.f0, self.b,
cl_guess=self.n_bad)
with self.assertRaises(RuntimeError):
nmt.compute_full_master(self.f0, self.f0, self.b,
cl_noise=self.n_half)
with self.assertRaises(RuntimeError):
nmt.compute_full_master(self.f0, self.f0, self.b,
cl_guess=self.n_half)
def __init__(self, mask_in, nside, bin_w, lmin, lmax, beams, wsp = True):
'''
class for Band-Power-Estimation;
Define the **apodized mask**, **beam weights**, **nside**, **bin-scheme**, **ell**
------------------------
beams : a numpy array which include fwhms for every frequency. Deconvolve to ** lmax=2*nside **
'''
self.mask = nmt.mask_apodization(mask_in, 6, apotype='C2')
self.nside = nside; self.lmax = lmax; self.Nf = len(beams); self.beams = beams;
# self.beam = hp.gauss_beam(beams/60/180*np.pi, lmax = 3*self.nside);
# self.b = nmt.NmtBin(self.nside, nlb=bin_w, lmax=self.lmax, is_Dell = True)
self.b = self.bands(bin_w = bin_w, lmin = lmin, lmax = lmax);
self.ell_n = self.b.get_effective_ells(); self.lbin = len(self.ell_n)
# self.w00 = [];
# self.w02 = [];
self.w22 = [];
# - To construct a empty template with a mask to calculate the **coupling matrix**
if wsp is True:
qu = np.ones((2, 12*self.nside**2))
for i in range(self.Nf):
beam_i = hp.gauss_beam(beams[i]/60/180*np.pi, lmax = 3*self.nside - 1);
# m0 = nmt.NmtField(self.mask,[qu[0]],purify_e=False, purify_b=True, beam = beam_i);
# # construct a workspace that calculate the coupling matrix first.
# _w00 = nmt.NmtWorkspace()
# _w00.compute_coupling_matrix(m0, m0, self.b) ## spin-0 with spin-0
# self.w00.append(_w00);
for j in range(self.Nf):
beam_j = hp.gauss_beam(beams[j]/60/180*np.pi, lmax = 3*self.nside - 1);
m20 = nmt.NmtField(self.mask, qu, purify_e=False, purify_b=True, beam = beam_i);
m21 = nmt.NmtField(self.mask, qu, purify_e=False, purify_b=True, beam = beam_j);
# _w02 = nmt.NmtWorkspace()
# _w02.compute_coupling_matrix(m0, m21, self.b) ## spin-0 with spin-2
_w22 = nmt.NmtWorkspace()
_w22.compute_coupling_matrix(m20, m21, self.b) ## spin-2 with spin-2
# self.w02.append(_w02);
self.w22.append(_w22)
def _compute_workspace(self):
mask1 = os.path.basename(self.data['tracers'][self.tr1]['mask'])
mask2 = os.path.basename(self.data['tracers'][self.tr2]['mask'])
# Remove the extension
mask1 = os.path.splitext(mask1)[0]
mask2 = os.path.splitext(mask2)[0]
if self.read_symm:
mask1, mask2 = mask2, mask1
fname = os.path.join(self.outdir,
'w__{}__{}.fits'.format(mask1, mask2))
w = nmt.NmtWorkspace()
if not os.path.isfile(fname):
n_iter = self.data['healpy']['n_iter_mcm']
if 'toeplizt' in self.data:
l_toeplitz = self.data['toeplizt']['l_toeplitz']
l_exact = self.data['toeplizt']['l_exact']
dl_band = self.data['toeplizt']['dl_band']
else:
l_toeplitz = l_exact = dl_band = -1
f1, f2 = self.get_fields()
w.compute_coupling_matrix(f1.f,
f2.f,
self.b,
n_iter=n_iter,
l_toeplitz=l_toeplitz,
l_exact=l_exact,
dl_band=dl_band)
w.write_to(fname)
else:
w.read_from(fname)
return w
def get_nmt_workspaces(self, recalculate=False):
if recalculate:
self.calculate_mode_coupling()
for name, value in self.masks['powerspectrum'].items():
wsp = nmt.NmtWorkspace()
wsp.read_from(value['nmt_wsp']['path'])
yield name, wsp
def calculate_mode_coupling(self):
# iterate through masks defined in the power spectrum list
for var in self.masks['powerspectrum'].values():
# read apodized mask from hdf5 file
with h5py.File(self.hdf5_path, 'r') as f:
mask = f[var['record']][...]
# create the binning object
binning = nmt.NmtBin.from_edges(**var['nmt_bin']['args'])
# define some random fields on which to calculate the
# mode coupling matrix
beam = var['nmt_field']['args'].pop('beam', None)
if beam is not None:
beam = _gaussian_beam(beam / 60. * np.pi / 180.,
np.arange(3 * self.nside))
q1, u1, q2, u2 = np.random.randn(4, len(mask))
f1 = nmt.NmtField(mask, [q1, u1],
**var['nmt_field']['args'],
beam=beam)
f2 = nmt.NmtField(mask, [q2, u2],
**var['nmt_field']['args'],
beam=beam)
# get namaster workspace object and compute coupling matrix
wsp = nmt.NmtWorkspace()
wsp.compute_coupling_matrix(f1, f2, binning)
path = Path(var['nmt_wsp']['path'])
if path.exists():
path.unlink()
# save to file
wsp.write_to(str(path))
def get_workspaces(fields):
"""
:param fields: tuple of tuple of fields to compute the mode-coupling matrix for. Shape is nbis x (f0, f2)
"""
spins = [0, 2] * len(fields)
ws = []
fields = sum(fields, ()) # Flatten the tuple of tuples
zbin1 = 1
c1 = 0
for f1, s1 in zip(fields, spins):
c2 = c1
zbin2 = int(c2 / 2) + 1
for f2, s2 in zip(fields[c1:], spins[c1:]):
print("Computing {}{}_{}{}".format(s1, s2, zbin1, zbin2))
suffix = "_w{}{}_{}{}.dat".format(s1, s2, zbin1, zbin2)
w = nmt.NmtWorkspace()
get_coupling_matrix(w, f1, f2, suffix)
ws.append(w)
if not ((c2 + 1) % 2):
zbin2 += 1
c2 += 1
if not ((c1 + 1) % 2):
zbin1 += 1
c1 += 1
return ws
def get_cl(trs, b1, b2):
nl = np.zeros(3*o.nside)
if (b1 == b2) and (not o.full_noise):
fname_nl = predir + "maps_metacal_bin%d_ns%d_nells.npz" % (b1, o.nside)
d = np.load(fname_nl)
nl[2:] = d['nl_cov']
sl = ccl.angular_cl(cosmo, trs[b1], trs[b2], ls)
if o.old_nka:
return np.array([sl + nl, cl0, cl0, nl])
else:
w = nmt.NmtWorkspace()
predir_mcm = predir + 'cls_metacal_mcm_bins_'
fname_mcm = predir_mcm + '%d%d_ns%d.fits' % (b1, b2, o.nside)
if os.path.isfile(fname_mcm):
w.read_from(fname_mcm)
else:
fname_mcm = predir_mcm + '%d%d_ns%d.fits' % (b2, b1, o.nside)
if os.path.isfile(fname_mcm):
w.read_from(fname_mcm)
else:
raise ValueError("Can't find MCM " + fname_mcm)
mskprod = get_field(b1, return_mask=True)
if b1 == b2:
mskprod *= mskprod
else:
mskprod *= get_field(b2, return_mask=True)
fsky = np.mean(mskprod)
return w.couple_cell([sl, cl0, cl0, cl0])/fsky + np.array([nl, cl0, cl0, nl])
def test_lite_cont(self):
f0 = nmt.NmtField(self.msk, [self.mps[0]], templates=[[self.tmp[0]]])
f2 = nmt.NmtField(self.msk, [self.mps[1], self.mps[2]],
templates=[[self.tmp[1], self.tmp[2]]])
f2l = nmt.NmtField(self.msk, [self.mps[1], self.mps[2]],
templates=[[self.tmp[1], self.tmp[2]]])
f2e = nmt.NmtField(self.msk, None, lite=True, spin=2)
clth = np.array([self.clte, 0*self.clte])
nlth = np.array([self.nlte, 0*self.nlte])
w = nmt.NmtWorkspace()
w.compute_coupling_matrix(f0, f2e, self.b)
clb = nlth
dlb = nmt.deprojection_bias(f0, f2, clth+nlth)
clb += dlb
cl = w.decouple_cell(nmt.compute_coupled_cell(f0, f2l),
cl_bias=clb)
tl = np.loadtxt("test/benchmarks/bm_yc_np_c02.txt",
unpack=True)[1:, :]
tlb = np.loadtxt("test/benchmarks/bm_yc_np_cb02.txt",
unpack=True)[1:, :]
self.assertTrue((np.fabs(dlb-tlb) <=
np.fmin(np.fabs(dlb),
np.fabs(tlb))*1E-5).all())
self.assertTrue((np.fabs(cl-tl) <=
np.fmin(np.fabs(cl),
np.fabs(tl))*1E-5).all())
def load_wsp(self, fitting_model):
""" Method to load an NmtWorkspace object from file instead of recomputing it.
"""
wsp = nmt.NmtWorkspace()
return wsp.read_from(
str(
self.meta.wsp_mcm_fpath(self.nlb, fitting_model,
self.power_conf)))
def setUp(self):
self.w = nmt.NmtWorkspace()
self.w.read_from("test/benchmarks/bm_nc_np_w00.dat")
self.nside = self.w.wsp.cs.n_eq
l, cltt, clee, clbb, clte, nltt, nlee, nlbb, nlte = np.loadtxt(
"test/benchmarks/cls_lss.txt", unpack=True)
self.l = l[:3 * self.nside]
self.cltt = cltt[:3 * self.nside] + nltt[:3 * self.nside]
def test_workspace_rebin():
b4 = nmt.NmtBin.from_nside_linear(WT.nside, 4)
w = nmt.NmtWorkspace()
w.read_from("test/benchmarks/bm_yc_yp_w02.fits") # OK read
w.update_bins(b4)
assert (w.wsp.bin.n_bands == b4.bin.n_bands)
b4 = nmt.NmtBin.from_nside_linear(WT.nside//2, 4)
with pytest.raises(RuntimeError): # Wrong lmax
w.update_bins(b4)
def des_sh_nls_rot_gal(des_mask_gwl,
des_opm_mean,
des_data_folder_gwl,
output_folder,
b,
nbins=4,
galaxy_treatment='metacal'):
des_wl_noise_file = os.path.join(
output_folder,
"des_sh_{}_rot0-10_noise_ns4096.npz".format(galaxy_treatment))
if os.path.isfile(des_wl_noise_file):
N_wl = np.load(des_wl_noise_file)['cls']
return N_wl
N_wl = []
for ibin in range(nbins):
rotated_cls = []
ws = nmt.NmtWorkspace()
fname = os.path.join(output_folder,
'w22_{}{}.dat'.format(1 + ibin, 1 + ibin))
ws.read_from(fname)
for irot in range(10):
map_file_e1 = os.path.join(
des_data_folder_gwl,
'map_{}_bin{}_rot{}_counts_e1_ns4096.fits'.format(
galaxy_treatment, ibin, irot))
map_file_e2 = os.path.join(
des_data_folder_gwl,
'map_{}_bin{}_rot{}_counts_e2_ns4096.fits'.format(
galaxy_treatment, ibin, irot))
map_we1 = hp.read_map(map_file_e1)
map_we2 = hp.read_map(map_file_e2)
map_e1 = (map_we1 / des_mask_gwl[ibin] -
(map_we1.sum() /
des_mask_gwl[ibin].sum())) / des_opm_mean[ibin]
map_e2 = (map_we2 / des_mask_gwl[ibin] -
(map_we2.sum() /
des_mask_gwl[ibin].sum())) / des_opm_mean[ibin]
map_e1[np.isnan(map_e1)] = 0.
map_e2[np.isnan(map_e2)] = 0.
sq = map_e1
su = -map_e2
f = nmt.NmtField(des_mask_gwl[ibin], [sq, su])
cls = ws.decouple_cell(nmt.compute_coupled_cell(f, f)).reshape(
(2, 2, -1))
rotated_cls.append(cls)
N_wl.append(np.mean(rotated_cls, axis=0))
np.savez(des_wl_noise_file, l=b.get_effective_ells(), cls=N_wl)
return N_wl
def test_workspace_rebin(self):
b4 = nmt.NmtBin.from_nside_linear(self.nside, 4)
w = nmt.NmtWorkspace()
w.read_from("test/benchmarks/bm_yc_yp_w02.fits") # OK read
w.update_bins(b4)
self.assertEqual(w.wsp.bin.n_bands, b4.bin.n_bands)
b4 = nmt.NmtBin.from_nside_linear(self.nside // 2, 4)
with self.assertRaises(RuntimeError): # Wrong lmax
w.update_bins(b4)
def test_workspace_io(self) :
w=nmt.NmtWorkspace()
with self.assertRaises(RuntimeError) : #Invalid writing
w.write_to("test/wspc.dat")
w.read_from("test/benchmarks/bm_yc_yp_w02.dat") #OK read
self.assertEqual(w.wsp.nside,64)
with self.assertRaises(RuntimeError) : #Can't write on that file
w.write_to("tests/wspc.dat")
with self.assertRaises(RuntimeError) : #File doesn't exist
w.read_from("none")
def get_mcm(f1, f2, jk_region=None):
fname = p.get_fname_mcm(f1, f2, jk_region=jk_region)
mcm = nmt.NmtWorkspace()
try:
mcm.read_from(fname)
except:
# print(" Computing MCM")
mcm.compute_coupling_matrix(f1.field, f2.field, bpw.bn)
mcm.write_to(fname)
return mcm
def autoWSP_EnB(self, maps, beams=None):
# assemble NaMaster fields
if beams is None:
f2 = nmt.NmtField(self._apomask, [maps[1], maps[2]], purify_e=True, purify_b=True)
else:
f2 = nmt.NmtField(self._apomask, [maps[1], maps[2]], purify_e=True, purify_b=True, beam=hp.gauss_beam(beams, 3*self._nside-1))
# prepare workspace
w = nmt.NmtWorkspace()
w.compute_coupling_matrix(f2, f2, self._b)
return w
def autoWSP_TT(self, maps, beams=None):
# assemble NaMaster fields
if beams is None:
f0 = nmt.NmtField(self._apomask, [maps[0]])
else:
f0 = nmt.NmtField(self._apomask, [maps[0]], beam=hp.gauss_beam(beams, 3*self._nside-1))
# prepare workspace
w = nmt.NmtWorkspace()
w.compute_coupling_matrix(f0, f0, self._b)
return w
def __init__(self, mask_in, nside, bin_w, lmax, beam = None, wsp = True):
'''
class for Band-Power-Estimation;
Define the **apodized mask**, **beam weights**, **nside**, **bin-scheme**, **ell**
Needs to be revised for the beam correction. Different frequency have different sigma,
which may lead to different wsp...
'''
self.mask = nmt.mask_apodization(mask_in, 6, apotype='C2')
self.nside = nside; self.lmax = lmax
# self.beam = hp.gauss_beam(beam/60/180*np.pi, lmax = 3*self.nside);
self.b = nmt.NmtBin(self.nside, nlb=bin_w, lmax=self.lmax, is_Dell = True)
self.ell_n = self.b.get_effective_ells(); self.lbin = len(self.ell_n)
# - To construct a empty template with a mask to calculate the **coupling matrix**
if wsp is True:
qu = np.ones((2, 12*self.nside**2))
m0 = nmt.NmtField(self.mask,[qu[0]],purify_e=False, purify_b=True)
m2 = nmt.NmtField(self.mask, qu, purify_e=False, purify_b=True)#, beam=bl)
# construct a workspace that calculate the coupling matrix first.
_w00 = nmt.NmtWorkspace()
_w00.compute_coupling_matrix(m0, m0, self.b) ## spin-0 with spin-0
_w02 = nmt.NmtWorkspace()
_w02.compute_coupling_matrix(m0, m2, self.b) ## spin-0 with spin-2
_w22 = nmt.NmtWorkspace()
_w22.compute_coupling_matrix(m2, m2, self.b) ## spin-2 with spin-2
self.w00 = _w00
self.w02 = _w02
self.w22 = _w22
def get_workspace_from_spins_masks(spin1, spin2, mask1, mask2):
ws = nmt.NmtWorkspace()
if mask2 >= mask1:
fname = os.path.join(
obsdir, 'w{}{}_{}{}.dat'.format(spin1, spin2, mask1, mask2))
else:
fname = os.path.join(
obsdir, 'w{}{}_{}{}.dat'.format(spin2, spin1, mask2, mask1))
print('Reading', fname)
ws.read_from(fname)
return ws
def test_workspace_rebeam():
w = nmt.NmtWorkspace()
w.read_from("test/benchmarks/bm_yc_yp_w02.fits") # OK read
lmax = w.wsp.lmax_fields
b = np.ones(lmax+1)*2.
w.update_beams(b, b) # All good
b2 = np.ones(lmax//2+1)*2. # Too short
with pytest.raises(ValueError):
w.update_beams(b, b2)
b2 = 1. # Not array
with pytest.raises(ValueError):
w.update_beams(b, b2)
def test_workspace_shorten():
w = nmt.NmtWorkspace()
w.read_from("test/benchmarks/bm_yc_yp_w02.fits") # OK read
lmax = w.wsp.lmax
larr = np.arange(lmax + 1)
larr_long = np.arange(2 * lmax + 1)
cls = 100. / (larr + 10.)
cls_long = 100. / (larr_long + 10.)
cls_c = w.couple_cell([cls, cls])
cls_c_long = w.couple_cell([cls_long, cls_long])
assert np.all(cls_c == cls_c_long)