eradiate.units

Attributes

eradiate.units.unit_context_config

Unit context used when interpreting config dictionaries. Aliased in eradiate.

eradiate.units.unit_context_kernel

Unit context used when building kernel dictionaries. Aliased in eradiate.

eradiate.units.unit_registry(*args, **kwargs)

Unit registry common to all Eradiate components. All units used in Eradiate must be created using this registry. Aliased in eradiate.

Enumerations

class eradiate.units.PhysicalQuantity(value)

An enumeration defining physical quantities known to Eradiate.

classmethod spectrum()

Return a tuple containing a subset of PhysicalQuantity members suitable for Spectrum initialization. This function caches its results for improved efficiency.

Functions

eradiate.units.interpret_quantities(d, quantity_map, uctx, force=False)

Advanced unit interpretation and wrapping for dictionaries. This function first calls pinttrs.interpret_units() to interpret units attached to a given field. Then, it converts quantities and possibly applies default units to fields specified in quantity_map based on uctx.

Parameters:

• d (dict) – Dictionary to apply unit conversion, checking and defaults.

• quantity_map (dict[str, str]) – Dictionary mapping fields to quantity identifiers (see PhysicalQuantity for valid quantity IDs).

• uctx (pinttrs.UnitContext) – Unit context containing quantity and default units definitions.

• force (bool, default: False) – If True, fields specified as quantities will be converted to target units; otherwise, only units compatibility will be checked.

Returns:

dict – Dictionary with units interpreted and checked, and default units applied to relevant fields.

Raises:

pinttrs.UnitsError – If a field and its mapped quantity have incompatible units.

See also

PhysicalQuantity

eradiate.units.symbol(units)

Normalize a string or Pint units to a symbol string.

Parameters:

units (pint.Unit or str) – Value to convert to a symbol string.

Returns:

str – Symbol string (e.g. 'm' for 'metre', 'W / m ** 2' for 'W/m^2', etc.).

eradiate.units.to_quantity(da)

Converts a DataArray to a Quantity. The array’s attrs metadata mapping must contain a units field.

Parameters:

da (DataArray) – DataArray instance which will be converted.

Returns:

quantity – The corresponding Pint quantity.

Raises:

ValueError – If the array’s metadata do not contain a units field.

Notes

This function can also be used on coordinate variables.