lsst.dax.apdb.pixelization.Pixelization Class Reference

Public Member Functions
def	__init__ (self, str pixelization, int pix_level, int pix_max_ranges)
List[int]	pixels (self, sphgeom.Region region)
int	pixel (self, sphgeom.UnitVector3d direction)
List[Tuple[int, int]]	envelope (self, sphgeom.Region region)

Public Attributes
	pixelator

Detailed Description

Wrapper for pixelization classes from `sphgeom` with configurable
pixelization type and parameters.

Parameters
----------
pixelization : `str`
    Name of a pixelization type, one of ""htm", "q3c", or "mq3c"
pix_level : `int`
    Pixelization level.
pix_max_ranges : `int`
    Maximum number of ranges returned from `envelope()` method.

Member Function Documentation

envelope()

List[Tuple[int, int]] lsst.dax.apdb.pixelization.Pixelization.envelope	(		self,
		sphgeom.Region	region
	)

Generate a set of HTM indices covering specified region.

Parameters
----------
region: `sphgeom.Region`
    Region that needs to be indexed.

Returns
-------
ranges : `list` of `tuple`
    Sequence of ranges, range is a tuple (minHtmID, maxHtmID).

pixel()

int lsst.dax.apdb.pixelization.Pixelization.pixel	(		self,
		sphgeom.UnitVector3d	direction
	)

Compute the index of the pixel for given direction.

Parameters
----------
direction : `lsst.sphgeom.UnitVector3d`

pixels()

List[int] lsst.dax.apdb.pixelization.Pixelization.pixels	(		self,
		sphgeom.Region	region
	)

Compute set of the pixel indices for given region.

Parameters
----------
region : `lsst.sphgeom.Region`

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The documentation for this class was generated from the following file:

• python/lsst/dax/apdb/pixelization.py