projected
National Geodetic Survey
2007-04-20
true
false
http://www.opengis.net/def/crs/EPSG/0/2872
NAD83(HARN) / California zone 3 (ftUS)
State law defines system in US survey feet. Federal definition is metric - see code 2768. Replaces NAD83 / SPCS for applications with an accuracy of better than 3 feet. Replaced by NAD83(NSRS2007) / SPCS.
United States (USA) - California - counties Alameda; Calaveras; Contra Costa; Madera; Marin; Mariposa; Merced; Mono; San Francisco; San Joaquin; San Mateo; Santa Clara; Santa Cruz; Stanislaus; Tuolumne.
-123.02
-117.83
36.73
38.71
OGP
2014-05-01
false
false
http://www.opengis.net/def/area/EPSG/0/2177
USA - California - SPCS - 3
Large and medium scale topographic mapping and engineering survey.
conversion
National Geodetic Survey http://www.ngs.noaa.gov/INFO/Policy/st_plane.html
2001-11-06
true
false
36
30
N
120
30
W
38
26
N
37
4
N
http://www.opengis.net/def/coordinateOperation/EPSG/0/15309
SPCS83 California zone 3 (US Survey feet)
State law defines grid unit as US Survey feet. For equivalent metric Federal definition see code 10433.
United States (USA) - California - counties Alameda; Calaveras; Contra Costa; Madera; Marin; Mariposa; Merced; Mono; San Francisco; San Joaquin; San Mateo; Santa Clara; Santa Cruz; Stanislaus; Tuolumne.
-123.02
-117.83
36.73
38.71
OGP
2014-05-01
false
false
http://www.opengis.net/def/area/EPSG/0/2177
USA - California - SPCS - 3
Used for large and medium scale topographic mapping and engineering survey.
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
EPSG guidance note #7-2, http://www.epsg.org
2001-06-05
false
true
For Projected Coordinate System NAD27 / Texas South Central
Parameters:
Ellipsoid Clarke 1866, a = 6378206.400 metres = 20925832.16 US survey feet
1/f = 294.97870
then e = 0.08227185 and e^2 = 0.00676866
First Standard Parallel 28°23'00"N = 0.49538262 rad
Second Standard Parallel 30°17'00"N = 0.52854388 rad
Latitude False Origin 27°50'00"N = 0.48578331 rad
Longitude False Origin 99°00'00"W = -1.72787596 rad
Easting at false origin 2000000.00 US survey feet
Northing at false origin 0.00 US survey feet
Forward calculation for:
Latitude 28°30'00.00"N = 0.49741884 rad
Longitude 96°00'00.00"W = -1.67551608 rad
first gives :
m1 = 0.88046050 m2 = 0.86428642
t = 0.59686306 tF = 0.60475101
t1 = 0.59823957 t2 = 0.57602212
n = 0.48991263 F = 2.31154807
r = 37565039.86 rF = 37807441.20
theta = 0.02565177
Then Easting E = 2963503.91 US survey feet
Northing N = 254759.80 US survey feet
Reverse calculation for same easting and northing first gives:
theta' = 0.025651765 r' = 37565039.86
t' = 0.59686306
Then Latitude = 28°30'00.000"N
Longitude = 96°00'00.000"W
http://www.opengis.net/def/method/EPSG/0/9802
Lambert Conic Conformal (2SP)
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 Easting and Northing coordinates of a point with geographical coordinates (lat,lon) the formulas for the one standard parallel case are:
E = EF + r sin(theta)
N = NF + rF - r cos(theta)
where
m = cos(lat)/(1 - e^2 sin^2(lat))^0.5 for m1, lat1, and m2, lat2 where lat1 and lat2 are the latitudes of the standard parallels.
t = tan(pi/4 - lat/2)/[(1 - e sin(lat))/(1 + e sin(lat))]^(e/2) for t1, t2, tF and t using lat1, lat2, latF and lat respectively.
n = (loge(m1) - loge(m2))/(loge(t1) - loge(t2))
F = m1/(n t1^n)
r = a F t^n for rF and r, where rF is the radius of the parallel of latitude of the false origin.
theta = n(lon - lon0)
The reverse formulas to derive the latitude and longitude of a point from its Easting and Northing values are:
lat = pi/2 - 2arctan{t'[(1 - esin(lat))/(1 + esin(lat))]^(e/2)}
lon = theta'/n +lon0
where
r' = +/-[(E - EF)^2 + {rF - (N - NF)}^2]^0.5 , taking the sign of n
t' = (r'/(aF))^(1/n)
theta' = arctan [(E- EF)/(rF - (N- NF))]
and n, F, and rF are derived as for the forward calculation.
2
2
36.5
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
-120.5
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
38.433333333333
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
37.066666666667
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
6561666.667
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
1640416.667
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/0/4497
Cartesian 2D CS. Axes: easting, northing (X,Y). Orientations: east, north. UoM: ftUS.
Used in projected and engineering coordinate reference systems.
http://www.opengis.net/def/axis/EPSG/0/37
X
east
http://www.opengis.net/def/axis/EPSG/0/38
Y
north