Input/Output

Construction

open_catalog(path, search_filter, columns, ...)	Open a catalog from a HATS path.
show_versions()	Print runtime versions and system info, useful for bug reports.
from_dataframe(dataframe, *[, ra_column, ...])	Load a catalog from a Pandas Dataframe.
from_astropy(table, *[, ra_column, ...])	Load a catalog from an Astropy Table.
nested.datasets.generation.generate_catalog(...)	Generates a toy catalog.

Materializing

Typically, you would materialize a catalog via catalog.write_catalog() calls, and they will call these io methods with appropriate settings.

io.to_hats(catalog, *, base_catalog_path[, ...])	Writes a catalog to disk, in HATS format.
io.to_collection(catalog, *, ...[, ...])	Saves the catalog collection to disk in the HATS format.
io.to_association(catalog, *, base_catalog_path)	Writes a crossmatching product to disk, in HATS association table format.