Class SkyEllipseCoordSet
java.lang.Object
uk.ac.starlink.ttools.plot2.layer.SkyEllipseCoordSet
- All Implemented Interfaces:
MultiPointCoordSet
MultiPointCoordSet for ellipses on a sphere.
- Since:
- 18 Feb 2013
- Author:
- Mark Taylor
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Constructor Summary
Constructors -
Method Summary
Modifier and TypeMethodDescriptionstatic MultiPointForm
Creates a MultiPointForm that can plot ellipses on the sky, corresponding to this coordset.Coord[]
Returns the coordinate definitions.int
Returns the number of (non-central) data positions defined by this coord set.boolean
readPoints
(Tuple tuple, int icol, DataGeom geom, double[] xyz0, double[][] xyzExtras) Reads the non-central points from a appropriate span of columns in a supplied tuple.
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Constructor Details
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SkyEllipseCoordSet
public SkyEllipseCoordSet()Constructor.
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Method Details
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getCoords
Description copied from interface:MultiPointCoordSet
Returns the coordinate definitions.- Specified by:
getCoords
in interfaceMultiPointCoordSet
- Returns:
- coords
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getPointCount
public int getPointCount()Description copied from interface:MultiPointCoordSet
Returns the number of (non-central) data positions defined by this coord set.- Specified by:
getPointCount
in interfaceMultiPointCoordSet
- Returns:
- data position count
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readPoints
public boolean readPoints(Tuple tuple, int icol, DataGeom geom, double[] xyz0, double[][] xyzExtras) Description copied from interface:MultiPointCoordSet
Reads the non-central points from a appropriate span of columns in a supplied tuple. The central data position must be supplied as input. Theicol
value gives the column corresponding to the first coord of this coordinate set in the sequence; the following few columns are assumed to correspod 1:1 to the coords in this coord set.- Specified by:
readPoints
in interfaceMultiPointCoordSet
- Parameters:
tuple
- tupleicol
- index of tuple field corresponding to the first of the coordinates in this setgeom
- converter between tuple values and data space coordinates; may not be requiredxyz0
- nDataDim-element array giving central data positionxyzExtras
- [nPointCount][nDataDim]-shaped array into which the non-central data positions will be written- Returns:
- true iff the conversion was successful
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createForm
Creates a MultiPointForm that can plot ellipses on the sky, corresponding to this coordset.- Returns:
- new form
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