Tutorials

These pages contain a set of tutorial notebooks for working through core and more advanced LSDB functionality.

1 - Catalogs

An introduction to LSDB’s core feature: Catalog

• The Catalog Object
• Getting data into LSDB
• Column filtering (e.g. columns=)
• Region selection filtering (e.g. search_filter)
• Row filtering (e.g. .query)
• Single row selection

2 - Analyzing Catalogs

An introduction to the most common Catalog operations

• Setting up a Dask Client
• Margins
• Crossmatching catalogs
• Applying a function (e.g. map_partitions)
• Working with TimeSeries
• Plotting results
• Exporting results (e.g. to_hats)

3 - Nested data manipulation

• NestedFrame

4 - HATS creation and reading

• Import catalogs
• Manual catalog verification
• Accessing remote data

5 - Performance Tips

• Index tables
• Dask cluster configuration
• Performance testing
• Joining catalogs

6 - Science Examples

Notebooks going over specific, contributed scientific example use cases

• Cross-match ZTF BTS and NGC
• Import and cross-match DES and Gaia
• Get a list of light-curves from ZTF and PS1
• Search for Supernovae in ZTF alerts
• Working with rubin data preview 1