.. _physics-stellarPopulationSpectraPostprocessorBuilder:

Stellar Population Spectra Postprocessor Builders
=================================================

Class providing builders for postprocessors for stellar population spectra. These act as a factory for ``stellarPopulationSpectraPostprocessor`` objects. Different postprocessors can be applied to different filters. The ``[luminosityPostprocessSet]`` parameter specifies, for each filter, a descriptor which is passed to the builder object, which then uses that descriptor to build a postprocessor. (If this parameter is not present then "``default``" is assumed for all filters.)

**Default implementation:** ``stellarPopulationSpectraPostprocessorBuilderLookup``

Methods
-------

``build`` → ``class(stellarPopulationSpectraPostprocessorClass)``
   Build and return a :galacticus-class:`stellarPopulationSpectraPostprocessorClass` object corresponding to the given string descriptor, acting as a factory that constructs the appropriate postprocessor (e.g., IGM absorption, dust) for each photometric filter.

   * ``type(varying_string), intent(in ) :: descriptor``

.. _physics-stellarPopulationSpectraPostprocessorBuilderLookup:

``stellarPopulationSpectraPostprocessorBuilderLookup``
------------------------------------------------------

A stellar population spectra postprocessor builder which simply looks up postprocessors by name.

**(Default implementation)**

**Methods**

* ``descriptorSpecial`` — Handle adding special parameters to the descriptor.

**Parameters**

* ``[names]`` (default ``namesDefault``) — The string names (e.g., ``default``, ``intrinsic``) assigned to each stellar spectra postprocessor, used as lookup keys when the builder is asked to return the postprocessor appropriate for a given filter or descriptor.