SkyPixDimension

class lsst.daf.butler.SkyPixDimension(system: SkyPixSystem, level: int)

Bases: Dimension

Special dimension for sky pixelizations.

A special Dimension subclass for hierarchical pixelizations of the sky at a particular level.

Unlike most other dimensions, skypix dimension records are not stored in the database, as these records only contain an integer pixel ID and a region on the sky, and each of these can be computed directly from the other.

Parameters:

systemSkyPixSystem

Pixelization system this dimension belongs to.

levelint

Integer level of this pixelization (smaller numbers are coarser grids).

Attributes Summary

documentation	Extended description of this dimension element.
has_own_table	Whether this element should have its own table in the database.
implied	Return the implied dimensions.
metadata_columns	Additional metadata fields included in this element's table.
name	Return unique string identifier for this endpoint (str).
required	Return the required dimensions.
topology	Return the relationship families to which this endpoint belongs.
unique_keys	Descriptions of unique identifiers for this dimension.

Methods Summary

hasTable()

Indicate if this element is associated with a table.

Attributes Documentation

documentation

has_own_table

implied

metadata_columns

name

required

topology

unique_keys

Methods Documentation

hasTable() → bool

Indicate if this element is associated with a table.

Return True if this element is associated with a table (even if that table “belongs” to another element).