dimension¶

class zfit.core.dimension.BaseDimensional[source]¶

Bases: zfit.core.interfaces.ZfitDimensional

axes¶: Return the axes, integer based identifier(indices) for the coordinate system.

n_obs¶: Return the number of observables, the dimensionality. Corresponds to the last dimension.

obs¶: Return the observables, string identifier for the coordinate system.

zfit.core.dimension.common_axes(spaces: Union[zfit.Space, Iterable[zfit.Space]]) → Union[List[str], bool][source]¶

Extract the union of axes from spaces in the order of spaces.

For example:: space1.axes: [1, 3]

space2.axes: [2, 3, 1]

space3.axes: [2]

returns [1, 3, 2]

Parameters:	() (spaces) – :py:class:`~zfit.Space`s to extract the axes from
Returns:	The axes as int or False if not every space has axes
Return type:	List[int] or False

zfit.core.dimension.common_obs(spaces: Union[zfit.Space, Iterable[zfit.Space]]) → Union[List[str], bool][source]¶

Extract the union of obs from spaces in the order of spaces.

For example:: space1.obs: [‘obs1’, ‘obs3’]

space2.obs: [‘obs2’, ‘obs3’, ‘obs1’]

space3.obs: [‘obs2’]

returns [‘obs1’, ‘obs3’, ‘obs2’]

Parameters:	() (spaces) – :py:class:`~zfit.Space`s to extract the obs from
Returns:	The observables as str or False if not every space has observables
Return type:	List[str]

zfit.core.dimension.get_same_obs(obs)[source]¶

zfit.core.dimension.limits_overlap(spaces: Union[zfit.Space, Iterable[zfit.Space]], allow_exact_match: bool = False) → bool[source]¶

Check if _any_ of the limits of spaces overlaps with _any_ other of spaces.

This also checks multiple limits within one space. If allow_exact_match is set to true, then an exact overlap of limits is allowed.

Parameters:	spaces (Iterable[zfit.Space]) – allow_exact_match (bool) – An exact overlap of two limits is counted as “not overlapping”. Example: limits from -1 to 3 and 4 to 5 to NOT overlap with the limits 4 to 5 iff allow_exact_match is True.
Returns:	if there are overlapping limits.
Return type:	bool

zfit.core.dimension.obs_subsets(dimensionals: Iterable[zfit.core.interfaces.ZfitDimensional]) → Dict[Set[str], zfit.core.interfaces.ZfitDimensional][source]¶

Split dimensionals into the smallest subgroup of obs and return a dict.

Parameters:	dimensionals – An Iterable containing two or more ZfitDimensional that should be split into the smallest subset.
Returns:	dict with the keys being sets of observables and the values, an iterable, containing the ZfitDimensional
Return type:	dict