def test_hpxgeom_to_slice(nside, nested, frame, region, axes):
geom = HpxGeom(nside, nested, frame, region=region, axes=axes)
slices = tuple([slice(1, 2) for i in range(2, geom.ndim)])
geom_slice = geom.to_slice(slices)
assert_allclose(geom_slice.ndim, 2)
assert_allclose(geom_slice.npix, np.squeeze(geom.npix[slices]))
idx = geom.get_idx(flat=True)
idx_slice = geom_slice.get_idx(flat=True)
if geom.ndim > 2:
m = np.all([np.isin(t, [1]) for t in idx[1:]], axis=0)
assert_allclose(idx_slice, (idx[0][m], ))
else:
assert_allclose(idx_slice, idx)
# Test slicing with explicit geometry
geom = HpxGeom(nside,
nested,
frame,
region=tuple([t[::3] for t in idx]),
axes=axes)
geom_slice = geom.to_slice(slices)
assert_allclose(geom_slice.ndim, 2)
assert_allclose(geom_slice.npix, np.squeeze(geom.npix[slices]))
idx = geom.get_idx()
idx_slice = geom_slice.get_idx()
if geom.ndim > 2:
m = np.all([np.isin(t, [1]) for t in idx[1:]], axis=0)
assert_allclose(idx_slice, (idx[0][m], ))
else:
assert_allclose(idx_slice, idx)
def test_hpxgeom_init_with_pix(nside, nested, frame, region, axes):
geom = HpxGeom(nside, nested, frame, region=region, axes=axes)
idx0 = geom.get_idx(flat=True)
idx1 = tuple([t[::10] for t in idx0])
geom = HpxGeom(nside, nested, frame, region=idx0, axes=axes)
assert_allclose(idx0, geom.get_idx(flat=True))
assert_allclose(len(idx0[0]), np.sum(geom.npix))
geom = HpxGeom(nside, nested, frame, region=idx1, axes=axes)
assert_allclose(idx1, geom.get_idx(flat=True))
assert_allclose(len(idx1[0]), np.sum(geom.npix))
def test_hpxgeom_get_pix(nside, nested, frame, region, axes):
geom = HpxGeom(nside, nested, frame, region=region, axes=axes)
idx = geom.get_idx(local=False, flat=True)
idx_local = geom.get_idx(local=True, flat=True)
assert_allclose(idx, geom.local_to_global(idx_local))
if axes is not None:
idx_img = geom.get_idx(local=False,
idx=tuple([1] * len(axes)),
flat=True)
idx_img_local = geom.get_idx(local=True,
idx=tuple([1] * len(axes)),
flat=True)
assert_allclose(idx_img, geom.local_to_global(idx_img_local))