projected
This alias is ambiguous as also used for NAD83 / Texas Centric Albers Equal Area.
This alias is ambiguous as also used for NAD83 / Texas Centric Albers Equal Area.
Texas Natural Resources Information System, http://www.tnris.state.tx.us/DigitalData/projections.htm
2007-04-20
true
false
http://www.opengis.net/def/crs/EPSG/0/3085
NAD83(HARN) / Texas Centric Albers Equal Area
For state-wide spatial data presentation requiring shape preservation use TCMS/LC (CRS code 3084). Replaces NAD83 / Texas Centric Albers Equal Area for applications with an accuracy of better than 1m. Replaced by NAD83(NSRS2007) / Texas Centric AEA.
United States (USA) - Texas.
-106.66
-93.5
25.83
36.5
OGP
2014-05-01
false
false
http://www.opengis.net/def/area/EPSG/0/1412
USA - Texas
Used for state-wide spatial data presentation requiring true area measurements.
conversion
Texas Natural Resources Information System, http://www.tnris.state.tx.us/DigitalData/projections.htm
2004-06-16
true
false
18
N
100
W
27
30
N
35
N
http://www.opengis.net/def/coordinateOperation/EPSG/0/14254
Texas Centric Albers Equal Area
Use TCMC/LC for applications requiring true shape preservation.
United States (USA) - Texas.
-106.66
-93.5
25.83
36.5
OGP
2014-05-01
false
false
http://www.opengis.net/def/area/EPSG/0/1412
USA - Texas
Single equal-area projection for all state.
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
USGS Professional Paper 1395, "Map Projections - A Working Manual" by John P. Snyder.
2007-03-27
false
true
See Information Source.
http://www.opengis.net/def/method/EPSG/0/9822
Albers Equal Area
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.
To derive the projected coordinates of a point, geodetic latitude (lat) is converted to authalic latitude (ß). The formulas to convert geodetic latitude and longitude (lat, lon) to Easting (E) and Northing (N) are:
Easting (E) = EF + (rho . sin(theta))
Northing (N) = NF + rhoO ? (rho . cos(theta))
where
theta = n . (lon - lonO)
rho = [a . (C ? n.alpha)^0.5] / n
rhoO = [a . (C ? n.alphaO)^0.5] / n
and
C = m1^2 + (n . alpha1)
n = (m1^2 ? m2^2) / (alpha2 - alpha1)
m1 = cos lat1 / (1 ? e^2 sin^2(lat1))^0.5
m2 = cos lat2 / (1 ? e^2 sin^2(lat2))^0.5
alpha = (1 ? e^2) . {[sin(lat) / (1 ? e^2 sin^2(lat))] ? [1/(2e)] . ln [(1 ? e sin(lat)) / (1 + e sin(lat))]}
alphaO = (1 ? e^2) . {[sin(latO) / (1 ? e^2 sin^2(latO))] ? [1/(2e)] . ln [(1 ? e sin(latO)) / (1 + e sin(latO))]}
alpha1 = (1 ? e^2) . {[sin(lat1) / (1 ? e^2 sin^2(lat1))] ? [1/(2e)] . ln [(1 ? e sin(lat1)) / (1 + e sin(lat1))]}
alpha2 = (1 ? e^2) . {[sin(lat2) / (1 ? e^2 sin^2(lat2))] ? [1/(2e)] . ln [(1 ? e sin(lat2)) / (1 + e sin(lat2))]}
The reverse formulas to derive the geodetic latitude and longitude of a point from its Easting and Northing values are:
lat = ß' + (e^2/3 + 31e^4/180 + 517e^6/5040) . sin 2ß'] + [(23e^4/360 + 251e^6/3780) . sin 4ß'] + [(761e^6/45360) . sin 6ß']
lon = lonO + (theta / n)
where
ß' = asin(alpha' / {1 ? [(1 ? e^2) / (2 . e)] . ln [(1 ? e) / (1 + e)]
alpha' = [C ? (rho^2 . N^2 / a^2)] / n
rho = {(E ? EF)^2 + [rhoO ? (N ? NF)]^2 }^0.5
theta = atan [(E ? EF) / [rhoO ? (N ? NF)]
and C, n and rhoO are as in the forward equations.
2
2
18
EPSG guidance note number 7.
1999-09-09
false
The latitude of the point which is not the natural origin and at which grid coordinate values false easting and false northing are defined.
http://www.opengis.net/def/parameter/EPSG/0/8821
Latitude of false origin
-100
EPSG guidance note number 7.
1999-09-09
false
The longitude of the point which is not the natural origin and at which grid coordinate values false easting and false northing are defined.
http://www.opengis.net/def/parameter/EPSG/0/8822
Longitude of false origin
27.5
EPSG guidance note number 7.
2009-06-02
true
false
For a conic projection with two standard parallels, this is the latitude of one of the parallels of intersection of the cone with the ellipsoid. It is normally but not necessarily that nearest to the pole. Scale is true along this parallel.
http://www.opengis.net/def/parameter/EPSG/0/8823
Latitude of 1st standard parallel
35
EPSG guidance note number 7.
2009-06-02
true
false
For a conic projection with two standard parallels, this is the latitude of one of the parallels at which the cone intersects with the ellipsoid. It is normally but not necessarily that nearest to the equator. Scale is true along this parallel.
http://www.opengis.net/def/parameter/EPSG/0/8824
Latitude of 2nd standard parallel
1500000
EPSG guidance note number 7.
1999-09-09
false
The easting value assigned to the false origin.
http://www.opengis.net/def/parameter/EPSG/0/8826
Easting at false origin
6000000
EPSG guidance note number 7.
1999-09-09
false
The northing value assigned to the false origin.
http://www.opengis.net/def/parameter/EPSG/0/8827
Northing at false origin
geographic 2D
This alias is used only in Guam, where NAD83(HARN) is realised through GGN93.
This abbreviation is used only in Guam, where NAD83(HARN) is realised through GGN93.
This alias is used only in Guam. The name is that of a different system applicable only in North America (see CRS code 4269).
EPSG. See 3D CRS for original information source.
2014-05-20
true
false
http://www.opengis.net/def/crs/EPSG/0/4152
NAD83(HARN)
Note: this CRS includes longitudes which are POSITIVE EAST. In CONUS and Hawaii replaces NAD83 for applications with an accuracy of better than 1m. Replaced by NAD83(NSRS2007) in CONUS and PRVI, by NAD83(PA11) in American Samoa and Hawaii.
Onshore only: American Samoa - Tutuila, Aunu'u, Ofu, Olesega, Ta'u and Rose islands. Guam. Puerto Rico. United States (USA) - Alabama; Arizona; Arkansas; California; Colorado; Connecticut; Delaware; Florida; Georgia; Hawaii; Idaho; Illinois; Indiana; Iowa; Kansas; Kentucky; Louisiana; Maine; Maryland; Massachusetts; Michigan; Minnesota; Mississippi; Missouri; Montana; Nebraska; Nevada; New Hampshire; New Jersey; New Mexico; New York; North Carolina; North Dakota; Ohio; Oklahoma; Oregon; Pennsylvania; Rhode Island; South Carolina; South Dakota; Tennessee; Texas; Utah; Vermont; Virginia; Washington; West Virginia; Wisconsin; Wyoming. US Virgin Islands.
144.58
-64.51
-14.59
49.38
National Geodetic Survey
2014-05-01
false
false
http://www.opengis.net/def/area/EPSG/0/1337
USA - HARN
Area crosses 180-degree meridian. This area is an aggregation of discontinuous areas codes 3110, 3255, 3294, 3330, 1323 and 1334.
Horizontal component of 3D system.
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
This alias is used only in Guam, where NAD83(HARN) is realised through GGN93.
This alias is used only in Guam. The name is that of a different system applicable only in North America (see datum code 6269).
National Geodetic Survey
2013-06-12
true
false
http://www.opengis.net/def/datum/EPSG/0/6152
NAD83 (High Accuracy Reference Network)
In CONUS, Puerto Rico and US Virgin Islands replaced by NAD83(NSRS2007). In American Samoa and Hawaii replaced by NAD83(PA11). In Guam replaced by NAD83(MA11).
Geodetic survey.
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