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Method: NADCON
Grid Files: guhpgn.las guhpgn.los
Remarks: NADCON method which expects longitudes positive west; EPSG GeogCRSs Guam 1963 and NAD83(HARN) (codes 4675 and 4152) have longitudes positive east. Can be used as approximation for tfm between Guam 1963 and WGS 84 - see tfm code 1069.
Information source: ftp://ftp.ngs.noaa.gov/pub/pcsoft/nadcon/readme.txt
Revision date: 2010-03-30
Unit: metre
Geodetic CRS: Guam 1963
Datum: Guam 1963
Ellipsoid: Clarke 1866
Prime meridian: Greenwich
Data source: EPSG
Information source: Yap State Code, Title 20, Chapter 5. http://www.fsmlaw.org/yap/code/title20/T20_Ch05.htm
Revision date: 2005-05-21
Scope: Topographic mapping.
Area of use: Federated States of Micronesia - Yap Islands.
Coordinate system: Cartesian 2D CS. Axes: easting, northing (X,Y). Orientations: east, north. UoM: m.
&stroke=red&width=2&path=13.18,144.58|13.7,144.58|13.7,145.01|13.18,145.01|13.18,144.58)
Center coordinates
758054.56 498468.89
Projected bounds:
734076.28 469154.91
782068.19 527806.88
WGS84 bounds:
144.58 13.18
145.01 13.7
Definition: OGC Well Known Text 2 (2019)
BOUNDCRS[ SOURCECRS[ PROJCRS["Guam 1963 / Yap Islands", BASEGEOGCRS["Guam 1963", DATUM["Guam 1963", ELLIPSOID["Clarke 1866",6378206.4,294.978698213898, LENGTHUNIT["metre",1]]], PRIMEM["Greenwich",0, ANGLEUNIT["degree",0.0174532925199433]], ID["EPSG",4675]], CONVERSION["Yap Islands", METHOD["Modified Azimuthal Equidistant", ID["EPSG",9832]], PARAMETER["Latitude of natural origin",9.54670833333333, ANGLEUNIT["degree",0.0174532925199433], ID["EPSG",8801]], PARAMETER["Longitude of natural origin",138.168744444444, ANGLEUNIT["degree",0.0174532925199433], ID["EPSG",8802]], PARAMETER["False easting",40000, LENGTHUNIT["metre",1], ID["EPSG",8806]], PARAMETER["False northing",60000, LENGTHUNIT["metre",1], ID["EPSG",8807]]], CS[Cartesian,2], AXIS["easting (X)",east, ORDER[1], LENGTHUNIT["metre",1]], AXIS["northing (Y)",north, ORDER[2], LENGTHUNIT["metre",1]], USAGE[ SCOPE["Topographic mapping."], AREA["Federated States of Micronesia - Yap Islands."], BBOX[9.39,137.99,9.69,138.27]], ID["EPSG",3295]]], TARGETCRS[ GEOGCRS["NAD83(HARN)", DATUM["NAD83 (High Accuracy Reference Network)", ELLIPSOID["GRS 1980",6378137,298.257222101, LENGTHUNIT["metre",1]]], PRIMEM["Greenwich",0, ANGLEUNIT["degree",0.0174532925199433]], CS[ellipsoidal,2], AXIS["geodetic latitude (Lat)",north, ORDER[1], ANGLEUNIT["degree",0.0174532925199433]], AXIS["geodetic longitude (Lon)",east, ORDER[2], ANGLEUNIT["degree",0.0174532925199433]], USAGE[ SCOPE["Horizontal component of 3D system."], AREA["American Samoa - onshore - Tutuila, Aunu'u, Ofu, Olesega, Ta'u and Rose islands. Guam - onshore. Northern Mariana Islands - onshore. Puerto Rico - onshore. United States (USA) - onshore Alabama, Alaska, 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 and Wyoming; offshore Gulf of Mexico continental shelf (GoM OCS). US Virgin Islands - onshore."], BBOX[-14.59,144.58,71.4,-64.51]], ID["EPSG",4152]]], ABRIDGEDTRANSFORMATION["Guam 1963 to NAD83(HARN) (1)", METHOD["NADCON", ID["EPSG",9613]], PARAMETERFILE["Latitude difference file","guhpgn.las"], PARAMETERFILE["Longitude difference file","guhpgn.los"], USAGE[ SCOPE["Geodesy."], AREA["Guam - onshore."], BBOX[13.18,144.58,13.7,145.01]], ID["EPSG",1068], REMARK["NADCON method which expects longitudes positive west; EPSG GeogCRSs Guam 1963 and NAD83(HARN) (codes 4675 and 4152) have longitudes positive east. Can be used as approximation for tfm between Guam 1963 and WGS 84 - see tfm code 1069."]]]
Definition: JSON
{ "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json", "type": "BoundCRS", "source_crs": { "type": "ProjectedCRS", "name": "Guam 1963 / Yap Islands", "base_crs": { "name": "Guam 1963", "datum": { "type": "GeodeticReferenceFrame", "name": "Guam 1963", "ellipsoid": { "name": "Clarke 1866", "semi_major_axis": 6378206.4, "semi_minor_axis": 6356583.8 } }, "coordinate_system": { "subtype": "ellipsoidal", "axis": [ { "name": "Geodetic latitude", "abbreviation": "Lat", "direction": "north", "unit": "degree" }, { "name": "Geodetic longitude", "abbreviation": "Lon", "direction": "east", "unit": "degree" } ] }, "id": { "authority": "EPSG", "code": 4675 } }, "conversion": { "name": "Yap Islands", "method": { "name": "Modified Azimuthal Equidistant", "id": { "authority": "EPSG", "code": 9832 } }, "parameters": [ { "name": "Latitude of natural origin", "value": 9.54670833333333, "unit": "degree", "id": { "authority": "EPSG", "code": 8801 } }, { "name": "Longitude of natural origin", "value": 138.168744444444, "unit": "degree", "id": { "authority": "EPSG", "code": 8802 } }, { "name": "False easting", "value": 40000, "unit": "metre", "id": { "authority": "EPSG", "code": 8806 } }, { "name": "False northing", "value": 60000, "unit": "metre", "id": { "authority": "EPSG", "code": 8807 } } ] }, "coordinate_system": { "subtype": "Cartesian", "axis": [ { "name": "Easting", "abbreviation": "X", "direction": "east", "unit": "metre" }, { "name": "Northing", "abbreviation": "Y", "direction": "north", "unit": "metre" } ] }, "id": { "authority": "EPSG", "code": 3295 } }, "target_crs": { "type": "GeographicCRS", "name": "NAD83(HARN)", "datum": { "type": "GeodeticReferenceFrame", "name": "NAD83 (High Accuracy Reference Network)", "ellipsoid": { "name": "GRS 1980", "semi_major_axis": 6378137, "inverse_flattening": 298.257222101 } }, "coordinate_system": { "subtype": "ellipsoidal", "axis": [ { "name": "Geodetic latitude", "abbreviation": "Lat", "direction": "north", "unit": "degree" }, { "name": "Geodetic longitude", "abbreviation": "Lon", "direction": "east", "unit": "degree" } ] }, "id": { "authority": "EPSG", "code": 4152 } }, "transformation": { "name": "Guam 1963 to NAD83(HARN) (1)", "method": { "name": "NADCON", "id": { "authority": "EPSG", "code": 9613 } }, "parameters": [ { "name": "Latitude difference file", "value": "guhpgn.las", "id": { "authority": "EPSG", "code": 8657 } }, { "name": "Longitude difference file", "value": "guhpgn.los", "id": { "authority": "EPSG", "code": 8658 } } ], "id": { "authority": "EPSG", "code": 1068 } } }
Definition: Mapnik
<?xml version="1.0" encoding="utf-8"?> <Map srs="+proj=aeqd +lat_0=9.54670833333333 +lon_0=138.168744444444 +x_0=40000 +y_0=60000 +ellps=clrk66 +units=m +no_defs +type=crs"> <Layer srs="+proj=aeqd +lat_0=9.54670833333333 +lon_0=138.168744444444 +x_0=40000 +y_0=60000 +ellps=clrk66 +units=m +no_defs +type=crs"> </Layer> </Map>
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