Constructor | Description |
---|---|
HealpixTiling(int k,
boolean nest) |
Constructor.
|
Modifier and Type | Method | Description |
---|---|---|
uk.ac.starlink.table.ValueInfo |
getIndexInfo() |
Returns a metadata item suitable for describing the pixel index
used by this tiling.
|
long |
getPixelCount() |
Returns the total number of tiles in this tiling.
|
long |
getPositionTile(double ra,
double dec) |
Returns the index of the tile in which a given sky position falls.
|
long[] |
getTileRange(double ra,
double dec,
double radius) |
Returns the bounds of a range of pixels which is known to cover
a given cone on the sky.
|
public HealpixTiling(int k, boolean nest)
k
- log to base 2 of HEALPix Nside parameternest
- true for nesting scheme, false for ring schemepublic long getPixelCount()
SkyTiling
getPixelCount
in interface SkyTiling
public uk.ac.starlink.table.ValueInfo getIndexInfo()
SkyTiling
getIndexInfo
in interface SkyTiling
public long getPositionTile(double ra, double dec)
SkyTiling
getPositionTile
in interface SkyTiling
ra
- right ascension in degreesdec
- declination in degreespublic long[] getTileRange(double ra, double dec, double radius)
SkyTiling
null
may be returned.getTileRange
in interface SkyTiling
ra
- right ascension in degreesdec
- declination in degreesradius
- radius in degreesCopyright © 2018 Central Laboratory of the Research Councils. All Rights Reserved.