projected
OGP
2008-03-14
true
true
http://www.opengis.net/def/crs/EPSG/0/3786
World Equidistant Cylindrical (Sphere)
Uses spherical development. Relative to an ellipsoidal development errors of up to 800 metres in position and 0.7% in scale may arise. It is not a recognised geodetic system: see WGS 84 / Plate Carree (CRS code 32663).
World.
-180
180
-90
90
OGP
2001-06-05
false
false
http://www.opengis.net/def/area/EPSG/0/1262
World
Certain Web mapping and visualisation applications.
conversion
OGP
2008-03-14
true
true
http://www.opengis.net/def/coordinateOperation/EPSG/0/19968
World Equidistant Cylindrical (Sphere)
Origin at intersection of equator and prime meridian.
World.
-180
180
-90
90
OGP
2001-06-05
false
false
http://www.opengis.net/def/area/EPSG/0/1262
World
Graticule coordinates in rectangular Cartesian form.
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
US Geological Survey Professional Paper 1395; "Map Projections - A Working Manual"; J. Snyder.
2008-03-14
true
true
See information source.
http://www.opengis.net/def/method/EPSG/0/9823
Equidistant Cylindrical (Spherical)
See method code 9842 for ellipsoidal development. If the latitude of natural origin is at the equator, also known as Plate Carrée. See also Pseudo Plate Carree, method code 9825.
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.
This method has one of the simplest formulas available. If the latitude of natural origin (latO) is at the equator the method is also known as Plate Carrée. It is not used for rigorous topographic mapping because its distortion characteristics are unsuitable. Formulas are included to distinguish this map projection method from an approach sometimes mistakenly called by the same name and used for simple computer display of geographic coordinates ? see Pseudo Plate Carrée (coordinate operation method code 9825).
For the forward calculation:
X = R . (lon - lonO) . cos(latO)
Y = R . lat
where R = ((a^2 * (1 ? e^2)) / (1 ? e^2 sin^2 latO)^2)^0.5
and latO, lonO, lat and lon are expressed in radians.
For the Equidistant Cylindrical method on a sphere (not ellipsoid), e = 0 and R = a.
For the reverse calculation:
lat = Y / R
lon = lonO + (X / R cos(latO))
where R is as for the forward method.
2
2
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
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
OGP
2004-01-06
false
false
http://www.opengis.net/def/crs/EPSG/0/4047
Unspecified datum based upon the GRS 1980 Authalic Sphere
Use only in cases where geodetic datum is unknown.
Not specified.
-180
180
-90
90
OGP
2000-06-23
false
false
http://www.opengis.net/def/area/EPSG/0/1263
Not specified
Small scale statistical mapping.
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
OGP
2004-04-27
false
http://www.opengis.net/def/datum/EPSG/0/6047
Not specified (based on GRS 1980 Authalic Sphere)
Included for coordinate reference systems where datum is unknown.
Not a valid datum.
Cartesian
OGP
2001-04-29
false
http://www.opengis.net/def/cs/EPSG/0/4499
Cartesian 2D CS. Axes: easting, northing (X,Y). Orientations: east, north. UoM: m.
Used in projected and engineering coordinate reference systems.
http://www.opengis.net/def/axis/EPSG/0/41
X
east
http://www.opengis.net/def/axis/EPSG/0/42
Y
north