Package uk.ac.starlink.ttools.plot2.layer

Class CartesianVectorCoordSet

java.lang.Object
uk.ac.starlink.ttools.plot2.layer.CartesianVectorCoordSet
All Implemented Interfaces:
CartesianMultiPointCoordSet, MultiPointCoordSet
public class CartesianVectorCoordSet extends Object implements CartesianMultiPointCoordSet
MultiPointCoordSet for vectors in Cartesian data coordinates.
Since:
18 Feb 2013
Author:
Mark Taylor

  • Constructor Details

    • CartesianVectorCoordSet

      public CartesianVectorCoordSet(String[] axisNames)
      Constructor.
      Parameters:
      axisNames - names of cartesian axes

  • Method Details

    • getCoords

      public Coord[] getCoords()
      Description copied from interface: MultiPointCoordSet
      Returns the coordinate definitions.
      Specified by:
      getCoords in interface MultiPointCoordSet
      Returns:
      coords

    • 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 interface MultiPointCoordSet
      Returns:
      data position count

    • readPoints

      public boolean readPoints(Tuple tuple, int icol, double[] xy0, double[][] xyExtras)
      Description copied from interface: CartesianMultiPointCoordSet
      Reads the non-central points from a appropriate span of columns in a supplied tuple. The central data position must be supplied as input. The icExtra value gives the column corresponding to the first coord of this coordinate set in the sequence; the following few columns are assumed to correspond 1:1 to the coords in this coord set.
      Specified by:
      readPoints in interface CartesianMultiPointCoordSet
      Parameters:
      tuple - tuple
      icol - index of tuple field corresponding to the first of the coordinates in this set
      xy0 - nDataDim-element array giving central data position
      xyExtras - [nPointCount][nDataDim]-shaped array into which the non-central data positions will be written
      Returns:
      true iff the conversion was successful