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22 changes: 22 additions & 0 deletions python/lsst/cell_coadds/_single_cell_coadd.py
Original file line number Diff line number Diff line change
Expand Up @@ -126,6 +126,28 @@ def __init__(
self._inputs = {}
self._identifiers = identifiers
self._aperture_correction_map = aperture_correction_map
self.set_cell_edges()

def set_cell_edges(
self,
*,
edge_width=1,
edge_mask_name="CELL_EDGE",
):
"""Set a mask bit indicating the inner cell edges.

Parameters
----------
edge_width : `int`, optional
The width of the edge region to flag, in pixels.
edge_mask_name : `str`, optional
The name of the mask plane to add for the edge region.
"""
self._inner.mask.addMaskPlane(edge_mask_name)
self._inner.mask.array[:, :edge_width] |= self._inner.mask.getPlaneBitMask(edge_mask_name)
self._inner.mask.array[:, -edge_width:] |= self._inner.mask.getPlaneBitMask(edge_mask_name)
self._inner.mask.array[:edge_width, :] |= self._inner.mask.getPlaneBitMask(edge_mask_name)
self._inner.mask.array[-edge_width:, :] |= self._inner.mask.getPlaneBitMask(edge_mask_name)

def _set_cell_edges(
self,
Expand Down
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