UnitsHaver

class PlasmaCalcs.units.units_haver.UnitsHaver(u=None, units=None, **kw_super)

has some unit-related methods. self.u manages the actual units.

u: None or UnitsManager

manages the units.

if not None, set self.u = u

units: None or str

the current default unit system for outputs. E.g. ‘si’ or ‘raw’.

if not None, set self.units = units.

self.units aliases to self.u.units.

i.e., setting self.units sets self.u.units; getting self.units gets self.u.units.

Methods

`get_behavior`([keys])	return value of self.behavior.
`record_units`(array)	return array.assign_attrs(self.units_meta()).
`units_meta`()	return dict(units=self.units).

Attributes

`behavior`	dict of {attr: self.attr} for attr in self.behavior_attrs.
`behavior_attrs`	list of attrs in self which control behavior of self.
`cls_behavior_attrs`
`nondim_behavior_attrs`	list of attrs in self which control behavior of self, but which are NOT in self.dimensions.
`u`	the current units manager for self.
`units`	the current unit system for self.

property behavior: dict of {attr: self.attr} for attr in self.behavior_attrs. Note dims are separate;

dims go in behavior.dims. E.g. Behavior({‘units’:’si’,…}, dims={‘snap’:0,…}).

property behavior_attrs: list of attrs in self which control behavior of self.

Here, returns self.cls_behavior_attrs.

Subclasses could override if any behavior attrs are not known at the class-level,

e.g. if MySubclass’s list of behavior attrs varies between instances of MySubclass.

get_behavior(keys=None): return value of self.behavior.

keys: None or iterable

if provided, only include these attrs.

from nondim_behavior_attrs, or dims.

property nondim_behavior_attrs: list of attrs in self which control behavior of self, but which are NOT in self.dimensions.

record_units(array): return array.assign_attrs(self.units_meta()).

if array is not an xarray.DataArray, convert it first.

property u: the current units manager for self.

if not yet initialized, getting self.u will create (and store) a new UnitsManager().

property units: the current unit system for self. E.g., ‘si’. (this is an alias to self.u.units)