hipscat.pixel_math.cone_filter

Module Contents

Functions

filter_pixels_by_cone(...)	Filter the leaf pixels in a pixel tree to return a partition_info dataframe with the pixels
_generate_cone_pixel_tree(ra, dec, radius_arcsec, order)	Generates a pixel_tree filled with leaf nodes at a given order that overlap with a cone

filter_pixels_by_cone(pixel_tree: hipscat.pixel_tree.pixel_tree.PixelTree, ra: float, dec: float, radius_arcsec: float) → List[hipscat.pixel_math.HealpixPixel]

Filter the leaf pixels in a pixel tree to return a partition_info dataframe with the pixels that overlap with a cone.

Parameters:

• ra (float) – Right Ascension of the center of the cone in degrees

• dec (float) – Declination of the center of the cone in degrees

• radius_arcsec (float) – Radius of the cone in arcseconds

Returns:

List of HealpixPixels representing only the pixels that overlap with the specified cone.

_generate_cone_pixel_tree(ra: float, dec: float, radius_arcsec: float, order: int)

Generates a pixel_tree filled with leaf nodes at a given order that overlap with a cone