Commit 63791924 authored by Martin Reinecke's avatar Martin Reinecke
Browse files


parents d05c02bb aea10faa
......@@ -15,23 +15,20 @@
# NIFTy is being developed at the Max-Planck-Institut fuer Astrophysik.
import numpy as np
from ..domain_tuple import DomainTuple
from import RGSpace
from import UnstructuredDomain
from ..fft import hartley
from ..operators.linear_operator import LinearOperator
from ..sugar import from_global_data, makeDomain
import numpy as np
class GridderMaker(object):
def __init__(self, dirty_domain, uvw, channel_fact, eps=2e-13):
import nifty_gridder
dirty_domain = makeDomain(dirty_domain)
if (len(dirty_domain) != 1 or
not isinstance(dirty_domain[0], RGSpace) or
not len(dirty_domain.shape) == 2):
if (len(dirty_domain) != 1 or not isinstance(dirty_domain[0], RGSpace)
or not len(dirty_domain.shape) == 2):
raise ValueError("need dirty_domain with exactly one 2D RGSpace")
if channel_fact.ndim != 1:
raise ValueError("channel_fact must be a 1D array")
......@@ -78,8 +75,7 @@ class _RestOperator(LinearOperator):
class RadioGridder(LinearOperator):
def __init__(self, grid_domain, bl, gconf, idx):
self._domain = DomainTuple.make(UnstructuredDomain(
self._domain = DomainTuple.make(UnstructuredDomain((idx.shape[0],)))
self._target = DomainTuple.make(grid_domain)
self._bl = bl
self._gconf = gconf
......@@ -92,10 +88,9 @@ class RadioGridder(LinearOperator):
if mode == self.TIMES:
x = x.to_global_data().reshape((-1, 1))
x = self._bl.ms2vis(x, self._idx)
res = nifty_gridder.vis2grid(
self._bl, self._gconf, self._idx, x)
res = nifty_gridder.vis2grid(self._bl, self._gconf, self._idx, x)
res = nifty_gridder.grid2vis(
self._bl, self._gconf, self._idx, x.to_global_data())
res = nifty_gridder.grid2vis(self._bl, self._gconf, self._idx,
res = self._bl.vis2ms(res, self._idx).reshape((-1,))
return from_global_data(self._tgt(mode), res)
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