uk.ac.starlink.ttools.plot2.layer

Class HealpixSys

java.lang.Object

uk.ac.starlink.ttools.plot2.layer.HealpixSys

public class HealpixSys
extends Object

Maps between plotting (SkySys) and Healpix (HealpixTableInfo.HpxCoordSys) coordinate system identifiers.

Since:

10 Dec 2018

Author:

Mark Taylor

Constructor Summary

Constructors

Constructor and Description
HealpixSys()

Method Summary

Modifier and Type	Method and Description
static HealpixTableInfo.HpxCoordSys	fromGeom(SkySys skySys) Returns the Healpix sky coordinate system corresponding to a plotting sky coordinate system.
static SkySys	toGeom(HealpixTableInfo.HpxCoordSys csys) Returns the plotting sky coordinate system corresponding to a Healpix sky coordinate system.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

HealpixSys

public HealpixSys()

Method Detail

toGeom

public static SkySys toGeom(HealpixTableInfo.HpxCoordSys csys)

Returns the plotting sky coordinate system corresponding to a Healpix sky coordinate system. Best efforts.

Parameters:

csys - healpix sky coordinate system identifier

Returns:

corresponding plotting sky system, or null if no correspondence is known

fromGeom

public static HealpixTableInfo.HpxCoordSys fromGeom(SkySys skySys)

Returns the Healpix sky coordinate system corresponding to a plotting sky coordinate system. Best efforts.

Parameters:

skySys - plotting sky coordinate system identifier

Returns:

corresponding healpix system, or null if no correspondence is known