# Other useful links

This documentation is still a work in progress, we can only provide a handful of information. There are some useful information in PDAF documentation that explains
the implementation and options of various aspects of DA algorithms.

- [Filter options](https://pdaf.awi.de/trac/wiki/AvailableOptionsforInitPDAF)
- [Domain localisation options](https://pdaf.awi.de/trac/wiki/OMI_observation_modules#init_dim_obs_l_OBSTYPE)
- [Observation operators](https://pdaf.awi.de/trac/wiki/OMI_observation_operators#PDAF-OMIObservationOperators)
- [Debug OMI](https://pdaf.awi.de/trac/wiki/OMI_observation_diagnostics_PDAF3)
- [IAU](https://pdaf.awi.de/trac/wiki/IncrementalAnalysisUpdates)
- [PDAFomi additional functionalities](https://pdaf.awi.de/trac/wiki/PDAFomi_additional_functionality#AdditionalFunctionalityofPDAF-OMI)
- [Custom local analysis domain observations](https://pdaf.awi.de/trac/wiki/OMI_search_local_observations)
- [Custom observation operator](https://pdaf.awi.de/trac/wiki/OMI_observation_operators#Implementingyourownobservationoperator)