lsdb.core.search.pixel_search

Classes

PixelSearch

Filter the catalog by HEALPix pixels.

Module Contents

class PixelSearch(pixels: tuple[int, int] | hats.pixel_math.HealpixPixel | list[tuple[int, int] | hats.pixel_math.HealpixPixel])

Bases: lsdb.core.search.abstract_search.AbstractSearch

Filter the catalog by HEALPix pixels.

Filters partitions in the catalog to those that are in a specified pixel set. Does not filter points inside those partitions.

classmethod from_radec(ra: float | list[float], dec: float | list[float]) → PixelSearch

Create a pixel search region, based on radec points.

Parameters:

• ra (float|list[float]) – celestial coordinates, right ascension in degrees

• dec (float|list[float]) – celestial coordinates, declination in degrees

filter_hc_catalog(hc_structure: lsdb.types.HCCatalogTypeVar) → lsdb.types.HCCatalogTypeVar

Determine the target partitions for further filtering.

search_points(frame: nested_pandas.NestedFrame, _) → nested_pandas.NestedFrame

Determine the search results within a data frame