projected
OGP
2006-06-02
true
false
http://www.opengis.net/def/crs/EPSG/0/3395
WGS 84 / World Mercator
Euro-centric view of world excluding polar areas.
World between 80°S and 84°N.
-180
180
-80
84
OGP
2008-06-23
false
false
http://www.opengis.net/def/area/EPSG/0/3391
World - between 80°S and 84°N
Very small scale mapping.
conversion
OGP
2006-06-02
true
false
http://www.opengis.net/def/coordinateOperation/EPSG/0/19883
World Mercator
World between 80°S and 84°N.
-180
180
-80
84
OGP
2008-06-23
false
false
http://www.opengis.net/def/area/EPSG/0/3391
World - between 80°S and 84°N
Very small scale mapping.
ISO 1000.
1995-06-02
false
http://www.opengis.net/def/uom/EPSG/0/9001
metre
Also known as International metre. SI standard unit.
length
0
This was the method name used prior to October 2010.
EPSG guidance note #7-2, http://www.epsg.org
2010-11-02
true
false
true
For Projected Coordinate System Makassar / NEIEZ
Parameters:
Ellipsoid Bessel 1841 a = 6377397.155 m 1/f = 299.15281
then e = 0.08169683
Latitude of natural origin = 00°00'00"N = 0.0000000 rad
Longitude of natural origin = 110°00'00"E = 1.91986218 rad
Scale factor at natural origin ko = 0.997
False Eastings FE = 3900000.00 m
False Northings FN = 900000.00 m
Forward calculation for:
Latitude = 3°00'00.00"S = -0.05235988 rad
Longitude = 120°00'00.00"E = 2.09439510 rad
gives
Easting E = 5009726.58 m
Northing N = 569150.82 m
Reverse calculation for same easting and northing first gives :
t = 1.0534121
chi = -0.0520110
Latitude = 3°00'00.000"S
Longitude = 120°00'00.000"E
http://www.opengis.net/def/method/EPSG/0/9804
Mercator (variant A)
Note that in these formulas the parameter latitude of natural origin (latO) is not used. However for this Mercator (variant A) method the EPSG dataset includes this parameter, which must have a value of zero, for completeness in CRS labelling.
Note: These formulas have been transcribed from EPSG Guidance Note #7-2. Users are encouraged to use that document rather than the text which follows as reference because limitations in the transcription will be avoided.
The formulas to derive projected Easting and Northing coordinates are:
E = FE + a*ko(lon - lonO)
N = FN + a*ko* ln{tan(pi/4 + lat/2)[(1 - esin(lat))/(1 + esin(lat))]^e/2} where symbols are as listed above and logarithms are natural.
The reverse formulas to derive latitude and longitude from E and N values are:
lat = chi + (esq/2 + 5e^4/24 + e^6/12 + 13e^8/360) sin(2chi)
+ (7e^4/48 + 29e^6/240 + 811e^8/11520) sin(4chi)
+ (7e^6/120 + 81e^8/1120) sin(6chi) + (4279e^8/161280) sin(8chi)
where chi = pi/2 - 2 arctan t
t = B^((FN-N)/(a*ko))
B = base of the natural logarithm, 2.7182818...
and for the 2 SP Case, ko is calculated as for the forward transformation above.
lon = ((E - FE)/(a*ko)) + lonO
0
EPSG guidance note number 7.
1999-09-09
false
The latitude of the point from which the values of both the geographical coordinates on the ellipsoid and the grid coordinates on the projection are deemed to increment or decrement for computational purposes. Alternatively it may be considered as the latitude of the point which in the absence of application of false coordinates has grid coordinates of (0,0).
http://www.opengis.net/def/parameter/EPSG/0/8801
Latitude of natural origin
0
Abbeviated as "CM".
Abbreviation for "Central Meridian".
EPSG guidance note number 7.
2002-06-22
false
The longitude of the point from which the values of both the geographical coordinates on the ellipsoid and the grid coordinates on the projection are deemed to increment or decrement for computational purposes. Alternatively it may be considered as the longitude of the point which in the absence of application of false coordinates has grid coordinates of (0,0). Sometimes known as "central meridian (CM)".
http://www.opengis.net/def/parameter/EPSG/0/8802
Longitude of natural origin
1
EPSG guidance note number 7.
1999-09-09
false
The factor by which the map grid is reduced or enlarged during the projection process, defined by its value at the natural origin.
http://www.opengis.net/def/parameter/EPSG/0/8805
Scale factor at natural origin
0
This alias applies only in the case of projection methods which have an axis positive west, e.g. Transverse Mercator (South Orientated).
EPSG guidance note number 7.
2002-07-31
false
Since the natural origin may be at or near the centre of the projection and under normal coordinate circumstances would thus give rise to negative coordinates over parts of the mapped area, this origin is usually given false coordinates which are large enough to avoid this inconvenience. The False Easting, FE, is the value assigned to the abscissa (east or west) axis of the projection grid at the natural origin.
http://www.opengis.net/def/parameter/EPSG/0/8806
False easting
0
This alias applies only in the case of projection methods which have an axis positive south, e.g. Transverse Mercator (South Orientated).
EPSG guidance note number 7.
2002-07-31
false
Since the natural origin may be at or near the centre of the projection and under normal coordinate circumstances would thus give rise to negative coordinates over parts of the mapped area, this origin is usually given false coordinates which are large enough to avoid this inconvenience. The False Northing, FN, is the value assigned to the ordinate (north or south) axis of the projection grid at the natural origin.
http://www.opengis.net/def/parameter/EPSG/0/8807
False northing
geographic 2D
EPSG. See 3D CRS for original information source.
2007-08-27
true
false
http://www.opengis.net/def/crs/EPSG/0/4326
WGS 84
World.
-180
180
-90
90
OGP
2001-06-05
false
false
http://www.opengis.net/def/area/EPSG/0/1262
World
Horizontal component of 3D system. Used by the GPS satellite navigation system and for NATO military geodetic surveying.
ellipsoidal
OGP
2008-06-23
false
http://www.opengis.net/def/cs/EPSG/0/6422
Ellipsoidal 2D CS. Axes: latitude, longitude. Orientations: north, east. UoM: degree
Coordinates referenced to this CS are in degrees. Any degree representation (e.g. DMSH, decimal, etc.) may be used but that used must be declared for the user by the supplier of data. Used in geographic 2D coordinate reference systems.
http://www.opengis.net/def/axis/EPSG/0/106
Lat
north
http://www.opengis.net/def/axis/EPSG/0/107
Long
east
geodetic
NIMA TR8350.2 June 2004 revision. http://earth-info.nga.mil/GandG/publications/tr8350.2/tr8350_2.html and
http://gis-lab.info/docs/nima-tr8350.2-addendum.pdf
2013-06-15
true
false
http://www.opengis.net/def/datum/EPSG/0/6326
World Geodetic System 1984
EPSG::6326 has been the then current realisation. No distinction is made between the original and subsequent (G730, G873, G1150 and G1674) WGS 84 frames. Since 1997, WGS 84 has been maintained within 10cm of the then current ITRF.
Satellite navigation.
Defined through a consistent set of station coordinates. These have changed with time: by 0.7m on 29/06/1994 (G730), a further 0.2m on 29/01/1997 (G873) and a further 0.06m on 20/01/2002 (G1150) and on 8/02/2012 (G1674).
1984-01-01
Cartesian
OGP
2001-04-29
false
http://www.opengis.net/def/cs/EPSG/0/4400
Cartesian 2D CS. Axes: easting, northing (E,N). Orientations: east, north. UoM: m.
Used in projected and engineering coordinate reference systems.
http://www.opengis.net/def/axis/EPSG/0/1
E
east
http://www.opengis.net/def/axis/EPSG/0/2
N
north