Package uk.co.mccombe.mapping
Class BMN
java.lang.Object
uk.co.mccombe.mapping.CoordinateSystem
uk.co.mccombe.mapping.Projection
uk.co.mccombe.mapping.TransverseMercator
uk.co.mccombe.mapping.BMN
- Direct Known Subclasses:
AustrianM28
,AustrianM31
,AustrianM34
Abstract base class for the Austrian BMN (Bundesmeldnetz) coordinate system
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Field Summary
FieldsFields inherited from class uk.co.mccombe.mapping.TransverseMercator
northernHemisphere, zone
Fields inherited from class uk.co.mccombe.mapping.CoordinateSystem
locus, ref, sph
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Constructor Summary
Constructors -
Method Summary
Modifier and TypeMethodDescriptionGet the defaul Datum for an instance of CoordinateSystem.The default Ellipsoid used by instances of this CoordinateSystem For example, a CoordinateSystem of type OSGB has the AirySphere as its default Ellipsoiddouble
f0()
The scale factor on the Central Meridian.double
n0()
n0() defines the "false northing" distance of the projection.double
phi0()
phi0() defines the latitude of the true origin of the projection.toString()
Provide a String representation of this UTM point in UTM coordinatesMethods inherited from class uk.co.mccombe.mapping.TransverseMercator
e0, gridConvergence, lamda0, pointScaleFactor, toEN
Methods inherited from class uk.co.mccombe.mapping.CoordinateSystem
getDatum, getEllipsoid, getName, getPosition, getWGS84, parseDouble, toLatLong, toLatLongString
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Field Details
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zonename
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Constructor Details
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BMN
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BMN
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Method Details
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defaultDatum
Description copied from class:CoordinateSystem
Get the defaul Datum for an instance of CoordinateSystem. For example, instances of OSGB usually use the OSGB 1936 datum.- Specified by:
defaultDatum
in classCoordinateSystem
- Returns:
- The default Datum used by this instance of CoordinateSystem
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defaultEllipsoid
Description copied from class:CoordinateSystem
The default Ellipsoid used by instances of this CoordinateSystem For example, a CoordinateSystem of type OSGB has the AirySphere as its default Ellipsoid- Specified by:
defaultEllipsoid
in classCoordinateSystem
- Returns:
- The Ellipsoid used as the deafult for this CoordinateSystem
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toString
Provide a String representation of this UTM point in UTM coordinates- Specified by:
toString
in classCoordinateSystem
- Returns:
- A UTM coordinate String
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f0
public double f0()The scale factor on the Central Meridian. Generally, Transverse Mercator projections increasingly exaggerate distances further from the central meridian. It is usual to reduce the scale factor at the central meridian to compensate for this effect and optimise the scale over the area of interest.- Specified by:
f0
in classTransverseMercator
- Returns:
- the value of the ScaleFactor at the central meridian.
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n0
public double n0()n0() defines the "false northing" distance of the projection. False origins are usually used with TM projections to ensure that easting and northing distances are always positive over the area of interest. n0() is used as an offset to the grid so that the "true origin" appears to have a northing value equal to n0().- Specified by:
n0
in classTransverseMercator
- Returns:
- The false northing distance (double)
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phi0
public double phi0()phi0() defines the latitude of the true origin of the projection. Note, however, that many Transverse Mercator projections employ a false origin. See n0() and e0() .- Specified by:
phi0
in classTransverseMercator
- Returns:
- The latitude of the true origin (radians)
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