def get_base_equivalent(self, unit_system=None):
"""Create and return dimensionally-equivalent units in a specified base.
>>> from unyt import g, cm
>>> (g/cm**3).get_base_equivalent('mks')
kg/m**3
>>> (g/cm**3).get_base_equivalent('solar')
Mearth/AU**3
"""
from unyt.unit_registry import _sanitize_unit_system
unit_system = _sanitize_unit_system(unit_system, self)
try:
conv_data = _check_em_conversion(
self.units, registry=self.registry, unit_system=unit_system
)
um = unit_system.units_map
if self.dimensions in um and self.expr == um[self.dimensions]:
return self.copy()
except MKSCGSConversionError:
raise UnitsNotReducible(self.units, unit_system)
if any(conv_data):
new_units, _ = _em_conversion(self, conv_data, unit_system=unit_system)
else:
try:
new_units = unit_system[self.dimensions]
except MissingMKSCurrent:
raise UnitsNotReducible(self.units, unit_system)
return Unit(new_units, registry=self.registry)
def get_base_equivalent(self, unit_system="mks"):
"""Create and return dimensionally-equivalent units in a specified base.
>>> from unyt import g, cm
>>> (g/cm**3).get_base_equivalent('mks')
kg/m**3
>>> (g/cm**3).get_base_equivalent('solar')
Mearth/AU**3
"""
from unyt.unit_systems import unit_system_registry
if hasattr(unit_system, "unit_registry"):
unit_system = unit_system.unit_registry.unit_system_id
elif unit_system == "code":
unit_system = self.registry.unit_system_id
unit_system = unit_system_registry[str(unit_system)]
try:
conv_data = _check_em_conversion(self.units.expr)
except MKSCGSConversionError:
raise UnitsNotReducible(self.units, unit_system)
if any(conv_data):
new_units, _ = _em_conversion(
self, conv_data, unit_system=unit_system)
else:
new_units = unit_system[self.dimensions]
return Unit(new_units, registry=self.registry)
def _Unit_get_base_equivalent_no_em(self, unit_system=None):
"""Create and return dimensionally-equivalent units in a specified base.
**Assumes that no electromagnetic units are being used.**
>>> from unyt import g, cm
>>> (g/cm**3).get_base_equivalent('mks')
kg/m**3
>>> (g/cm**3).get_base_equivalent('solar')
Mearth/AU**3
"""
unit_system = _sanitize_unit_system(unit_system, self)
try:
new_units = unit_system[self.dimensions]
except MissingMKSCurrent:
raise UnitsNotReducible(self.units, unit_system)
return unyt.Unit(new_units, registry=self.registry)
def get_base_equivalent(self, unit_system="mks"):
"""Create and return dimensionally-equivalent units in a specified base.
>>> from unyt import g, cm
>>> (g/cm**3).get_base_equivalent('mks')
kg/m**3
>>> (g/cm**3).get_base_equivalent('solar')
Mearth/AU**3
"""
unit_system = _sanitize_unit_system(unit_system, self)
try:
conv_data = _check_em_conversion(
self.units, registry=self.registry, unit_system=unit_system)
except MKSCGSConversionError:
raise UnitsNotReducible(self.units, unit_system)
if any(conv_data):
new_units, _ = _em_conversion(
self, conv_data, unit_system=unit_system)
else:
new_units = unit_system[self.dimensions]
return Unit(new_units, registry=self.registry)