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[param] indexing routine simplified

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mzwiessele 2014-09-05 14:20:26 +01:00
parent 68fa8b6366
commit 9978c285a2
1 changed files with 0 additions and 25 deletions
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25
GPy/core/parameterization/param.py
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@ -143,31 +143,6 @@ class Param(Parameterizable, ObsAr):
return self._raveled_index()
#===========================================================================
# Index recreation
#===========================================================================
def _expand_index(self, slice_index=None):
# this calculates the full indexing arrays from the slicing objects given by get_item for _real..._ attributes
# it basically translates slices to their respective index arrays and turns negative indices around
# it tells you in the second return argument if it has only seen arrays as indices
if slice_index is None:
slice_index = self._current_slice_
def f(a):
a, b = a
if isinstance(a, numpy.ndarray) and a.dtype == bool:
raise ValueError, "Boolean indexing not implemented, use Param[np.where(index)] to index by boolean arrays!"
if a not in (slice(None), Ellipsis):
if isinstance(a, slice):
start, stop, step = a.indices(b)
return numpy.r_[start:stop:step]
elif isinstance(a, (list, numpy.ndarray, tuple)):
a = numpy.asarray(a, dtype=int)
a[a < 0] = b + a[a < 0]
elif a < 0:
a = b + a
return numpy.r_[a]
return numpy.r_[:b]
return itertools.imap(f, itertools.izip_longest(slice_index[:self._realndim_], self._realshape_, fillvalue=slice(self.size)))
#===========================================================================
# Constrainable
#===========================================================================
def _ensure_fixes(self):