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java.lang.Objectuk.ac.starlink.ttools.plot2.layer.CartesianVectorCoordSet
public class CartesianVectorCoordSet
MultiPointCoordSet for vectors in Cartesian data coordinates.
Constructor Summary | |
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CartesianVectorCoordSet(String[] axisNames)
Constructor. |
Method Summary | |
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Coord[] |
getCoords()
Returns the coordinate definitions. |
int |
getPointCount()
Returns the number of (non-central) data positions defined by this coord set. |
boolean |
readPoints(TupleSequence tseq,
int icol,
double[] xy0,
double[][] xyExtras)
Reads the non-central points from a appropriate span of columns in the current row of a supplied TupleSequence. |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
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public CartesianVectorCoordSet(String[] axisNames)
axisNames
- names of cartesian axesMethod Detail |
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public Coord[] getCoords()
MultiPointCoordSet
getCoords
in interface MultiPointCoordSet
public int getPointCount()
MultiPointCoordSet
getPointCount
in interface MultiPointCoordSet
public boolean readPoints(TupleSequence tseq, int icol, double[] xy0, double[][] xyExtras)
MultiPointCoordSet
icol
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.
readPoints
in interface MultiPointCoordSet
tseq
- tuple sequence, positioned at the row of interesticol
- index of column in the sequence corresponding to
the first of the coordinates in this setxy0
- nDataDim-element array giving central data positionxyExtras
- [nPointCount][nDataDim]-shaped array into which
the non-central data positions will be written
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