PixtoolsHealpix (Starjava TTOOLS API)

java.lang.Object
- uk.ac.starlink.ttools.cone.PixtoolsHealpix

All Implemented Interfaces:

cds.moc.HealpixImpl
```
public class PixtoolsHealpix
extends java.lang.Object
implements cds.moc.HealpixImpl
```
Healpix implementation for use with MOC library based on Kuropatkin's PixTools library. Use getInstance() to obtain the singleton instance of this class.

Since:

16 Dec 2011

Author:

Mark Taylor

See Also:

PixTools

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`long`	`ang2pix(int order, double lonDeg, double latDeg)`
`static PixtoolsHealpix`	`getInstance()`	Returns the sole instance of this singleton class.
`static int`	`nsideToOrder(long nside)`	Turns the HEALPix Nside parameter into the MOC "order" parameter.
`static long`	`orderToNside(int order)`	Turns the MOC "order" parameter into the HEALPix Nside parameter.
`double[]`	`pix2ang(int order, long ipix)`
`long[]`	`queryDisc(int order, double lonDeg, double latDeg, double radiusDeg)`
`int`	`sizeToNside(double sizeDeg)`	Returns an Nside value corresponding to a given angular size.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Method Detail
  - ang2pix
```
public long ang2pix(int order,
                    double lonDeg,
                    double latDeg)
```
    Specified by:
    
    ang2pix in interface cds.moc.HealpixImpl
  - pix2ang
```
public double[] pix2ang(int order,
                        long ipix)
```
    Specified by:
    
    pix2ang in interface cds.moc.HealpixImpl
  - queryDisc
```
public long[] queryDisc(int order,
                        double lonDeg,
                        double latDeg,
                        double radiusDeg)
```
    Specified by:
    
    queryDisc in interface cds.moc.HealpixImpl
  - sizeToNside
```
public int sizeToNside(double sizeDeg)
```
    Returns an Nside value corresponding to a given angular size.
    
    Parameters:
    
    sizeDeg - size in degrees
    
    Returns:
    
    nside
  - orderToNside
```
public static long orderToNside(int order)
```
    Turns the MOC "order" parameter into the HEALPix Nside parameter.
    
    Parameters:
    
    order -
    
    Returns:
    
    nside
  - nsideToOrder
```
public static int nsideToOrder(long nside)
```
    Turns the HEALPix Nside parameter into the MOC "order" parameter.
    
    Parameters:
    
    nside - Nside
    
    Returns:
    
    order
    
    Throws:
    
    java.lang.IllegalArgumentException - if nside is not suitable
  - getInstance
```
public static PixtoolsHealpix getInstance()
```
    Returns the sole instance of this singleton class.
    
    Returns:
    
    instance

Class PixtoolsHealpix

Method Summary

Methods inherited from class java.lang.Object

Method Detail

ang2pix

pix2ang

queryDisc

sizeToNside

orderToNside

nsideToOrder

getInstance