Class TimeDataGeom

  • All Implemented Interfaces:
    DataGeom

    public class TimeDataGeom
    extends java.lang.Object
    implements DataGeom
    Defines positional data coordinates used by a 2-D time plot.

    Note the first coordinate is time, whose values are in seconds since the Unix epoch, as defined by TimeMapper.

    This is a singleton class.

    Since:
    15 Aug 2013
    Author:
    Mark Taylor
    • Method Detail

      • getDataDimCount

        public int getDataDimCount()
        Returns 2.
        Specified by:
        getDataDimCount in interface DataGeom
        Returns:
        number of elements in data space coordinate array
      • getVariantName

        public java.lang.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()
        Description copied from interface: DataGeom
        Returns the definitions for the user-supplied coordinates that indicate plot positions.
        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