Package uk.co.mccombe.mapping

Class IrishGrid

java.lang.Object
uk.co.mccombe.mapping.CoordinateSystem
uk.co.mccombe.mapping.Projection
uk.co.mccombe.mapping.TransverseMercator
uk.co.mccombe.mapping.IrishGrid
public class IrishGrid extends TransverseMercator
Implementation of the Irish Grid. Note that this is used throughout the island of Ireland, North and South and that the OSGB grid is not applicable. For a complete description of the Irish Grid, see http://www.osni.gov.uk/2.1_the_irish_grid.pdf

  • Constructor Details

    • IrishGrid

      public IrishGrid(Position p, Ellipsoid e, Datum d)
      Create a new IrishGrid point for a specific Position, Ellipsoid and Datum.
      Parameters:
      p - Position
      e - Ellipsoid to use with this instance
      d - Datum to use

    • IrishGrid

      public IrishGrid(ENPair point, Ellipsoid e, Datum d)
      Create a new IrishGrid point for a specific pair of Eastings and Northings, Ellipsoid and Datum.
      Parameters:
      point - ENPair containing the easting and northing values
      e - Ellipsoid to use with this instance
      d - Datum to use

    • IrishGrid

      public IrishGrid(ENPair point)
      Create a new IrishGrid point for a specific pair of Eastings and Northings. Default values of Ellipsoid and Datum are used.
      Parameters:
      point - ENPair containing the easting and northing values

  • Method Details

    • makePoint

      public static IrishGrid makePoint(String gridref, Ellipsoid e, Datum d) throws GridFormatException
      Factory method to create a new IrishGrid point using a String containing a grid reference.
      Parameters:
      gridref - A valid Irish grid reference String (e.g. R 212 712)
      e - Ellipsoid to use
      d - Datum to use
      Returns:
      A new IrishGrid point for the specified point, Ellipsoid and Datum
      Throws:
      GridFormatException - In case of syntax error in he grid reference

    • defaultDatum

      public Datum defaultDatum()
      Defines the default Datum for this system
      Specified by:
      defaultDatum in class CoordinateSystem
      Returns:
      Datum.Ireland_1965

    • defaultEllipsoid

      public Ellipsoid defaultEllipsoid()
      Define the default Ellipsoid for this system
      Specified by:
      defaultEllipsoid in class CoordinateSystem
      Returns:
      Ellipsoid.MODIFIED_AIRY

    • toString

      public String toString()
      Provide a String representation for this IrishGrid
      Specified by:
      toString in class CoordinateSystem
      Returns:
      A 10-figure Irish grid reference, with grid letter (e.g. R 21235 71262)

    • lamda0

      public double lamda0()
      The central meridian
      Specified by:
      lamda0 in class TransverseMercator
      Returns:
      The central meridian (degrees)

    • e0

      public double e0()
      False Eastimg (metres)
      Specified by:
      e0 in class TransverseMercator
      Returns:
      False easting value (metres)

    • n0

      public double n0()
      Define false northing
      Specified by:
      n0 in class TransverseMercator
      Returns:
      False northing value (metres)

    • phi0

      public double phi0()
      Define latitude of true origin
      Specified by:
      phi0 in class TransverseMercator
      Returns:
      Latitude of true origin (degrees)

    • f0

      public double f0()
      Define scale factor
      Specified by:
      f0 in class TransverseMercator
      Returns:
      Scale factor at central meridian

    • validateEN

      protected static boolean validateEN(ENPair p)