Class SliceDataGeom

java.lang.Object
uk.ac.starlink.ttools.plot2.geom.SliceDataGeom
All Implemented Interfaces:
DataGeom
public class SliceDataGeom extends Object implements DataGeom
DataGeom implementation that reads positions corresponding to some, but not all, orthogonal data position coordinates.
Since:
16 Jul 2013
Author:
Mark Taylor

  • Constructor Details

    • SliceDataGeom

      public SliceDataGeom(FloatingCoord[] sliceCoords, String variantName)
      Constructor. The supplied array of coordinates should contain an element for each of the data position coordinates, but some of those elements may be null, to indicate that no positioning is done in that dimension. Coordinates read into a data position array in the corresponding dimensions will be given as NaNs.
      Parameters:
      sliceCoords - per-data dimension array of coords, some elements may be null
      variantName - variant name

  • Method Details

    • getDataDimCount

      public int getDataDimCount()
      Description copied from interface: DataGeom
      Returns the dimensionality of the plot surface's plot space.
      Specified by:
      getDataDimCount in interface DataGeom
      Returns:
      number of elements in data space coordinate array

    • getVariantName

      public String getVariantName()
      Description copied from interface: DataGeom
      Returns a label for this DataGeom. It may be used to distinguish from other geoms used in the same plot type, so for instance call it "Cartesian" or "Polar" rather than "Plane" if it's X,Y.
      Specified by:
      getVariantName in interface DataGeom
      Returns:
      user-directed input coordinate type name

    • getPosCoords

      public Coord[] getPosCoords()
      Returns an array of the non-null coords.
      Specified by:
      getPosCoords in interface DataGeom
      Returns:
      coordinate quantity array for this geometry

    • readDataPos

      public boolean readDataPos(Tuple tuple, int ic, double[] dpos)
      Description copied from interface: DataGeom
      Determines the positional coordinates in data space for a supplied tuple.

      A parameter supplies the index of the field in the tuple at which the positional coordinate(s) can be found. Each position is represented by DataGeom.getPosCoords() columns of the tuple. By convention positions are at the start of the tuple, so if there is one position in the tuple it will be at icol=0, and there are multiple positions the N'th one will be at icol=N*getPosCoords().

      An array of (at least) DataGeom.getDataDimCount() elements is supplied, and on success the data space coordinate values are written into it.

      Specified by:
      readDataPos in interface DataGeom
      Parameters:
      tuple - coordinate tuple
      ic - column index in tuple at which the positional information starts
      dpos - array into which data space coordinates are written
      Returns:
      true iff conversion was successful

    • hashCode

      public int hashCode()
      Overrides:
      hashCode in class Object

    • equals

      public boolean equals(Object o)
      Overrides:
      equals in class Object

Copyright © 2026 Central Laboratory of the Research Councils. All Rights Reserved.