hipscat.pixel_tree.moc_filter

Module Contents

Functions

filter_by_moc(→ hipscat.pixel_tree.pixel_tree.PixelTree)	Filters a pixel tree to only include the pixels that overlap with the pixels in the moc
perform_filter_by_moc(→ numpy.ndarray)	Performs filtering with lists of pixel intervals

filter_by_moc(tree: hipscat.pixel_tree.pixel_tree.PixelTree, moc: mocpy.MOC) → hipscat.pixel_tree.pixel_tree.PixelTree

Filters a pixel tree to only include the pixels that overlap with the pixels in the moc

Parameters:

• tree (PixelTree) – The tree to perform the filtering on

• moc (mocpy.MOC) – The moc to use to filter

Returns:

A new PixelTree object with only the pixels from the input tree that overlap with the moc.

perform_filter_by_moc(tree: numpy.ndarray, moc: numpy.ndarray) → numpy.ndarray

Performs filtering with lists of pixel intervals

Input interval lists must be at the same order.

Parameters:

• tree (np.ndarray) – Array of pixel intervals to be filtered

• moc (np.ndarray) – Array of pixel intervals to be used to filter

Returns:

A boolean array of dimension tree.shape[0] which masks which pixels in tree overlap with the pixels in moc