nadcon5.nad27.nad83_1986.alaska.lat.trn.20160901.b nadcon5.nad27.nad83_1986.alaska.lon.trn.20160901.b
Uses NADCON5 method which expects longitudes positive east in range 0-360°; source and target CRSs have longitudes positive east in range -180° to +180°. Accuracy at 67% confidence level is 0.5m onshore, 5m nearshore and undetermined farther offshore.
National Geodetic Survey, www.ngs.noaa.gov
2019-09-17
US survey foot
EPSG
National Geodetic Survey publication 65-1 part 52.
2013-05-16
Engineering survey, topographic mapping.
Replaces NAD27 / Michigan West zone (CRS code 5625).
Cartesian 2D CS. Axes: easting, northing (X,Y). Orientations: east, north. UoM: ftUS.
Definition: OGC Well Known Text 2 (2019)
BOUNDCRS[ SOURCECRS[ PROJCRS["NAD27 / Michigan North", BASEGEOGCRS["NAD27", DATUM["North American Datum 1927", ELLIPSOID["Clarke 1866",6378206.4,294.978698213898, LENGTHUNIT["metre",1]]], PRIMEM["Greenwich",0, ANGLEUNIT["degree",0.0174532925199433]], ID["EPSG",4267]], CONVERSION["Michigan CS27 North zone", METHOD["Lambert Conic Conformal (2SP Michigan)", ID["EPSG",1051]], PARAMETER["Latitude of false origin",45.45, ANGLEUNIT["degree",0.0174532925199433], ID["EPSG",8821]], PARAMETER["Longitude of false origin",-87, ANGLEUNIT["degree",0.0174532925199433], ID["EPSG",8822]], PARAMETER["Latitude of 1st standard parallel",45.4833333333333, ANGLEUNIT["degree",0.0174532925199433], ID["EPSG",8823]], PARAMETER["Latitude of 2nd standard parallel",47.0833333333333, ANGLEUNIT["degree",0.0174532925199433], ID["EPSG",8824]], PARAMETER["Easting at false origin",2000000, LENGTHUNIT["US survey foot",0.304800609601219], ID["EPSG",8826]], PARAMETER["Northing at false origin",0, LENGTHUNIT["US survey foot",0.304800609601219], ID["EPSG",8827]], PARAMETER["Ellipsoid scaling factor",1.0000382, SCALEUNIT["unity",1], ID["EPSG",1038]]], CS[Cartesian,2], AXIS["easting (X)",east, ORDER[1], LENGTHUNIT["US survey foot",0.304800609601219]], AXIS["northing (Y)",north, ORDER[2], LENGTHUNIT["US survey foot",0.304800609601219]], USAGE[ SCOPE["Engineering survey, topographic mapping."], AREA["United States (USA) - Michigan north of approximately 45°45'N - counties of Alger; Baraga; Chippewa; Delta; Dickinson; Gogebic; Houghton; Iron; Keweenaw; Luce; Mackinac; Marquette; Menominee; Ontonagon; Schoolcraft."], BBOX[45.08,-90.42,48.32,-83.44]], ID["EPSG",6200]]], TARGETCRS[ GEOGCRS["NAD83", DATUM["North American Datum 1983", 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["Geodesy."], AREA["North America - onshore and offshore: Canada - Alberta; British Columbia; Manitoba; New Brunswick; Newfoundland and Labrador; Northwest Territories; Nova Scotia; Nunavut; Ontario; Prince Edward Island; Quebec; Saskatchewan; Yukon. Puerto Rico. United States (USA) - 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; Wyoming. US Virgin Islands. British Virgin Islands."], BBOX[14.92,167.65,86.45,-40.73]], ID["EPSG",4269]]], ABRIDGEDTRANSFORMATION["NAD27 to NAD83 (8)", METHOD["NADCON5 (2D)", ID["EPSG",1074]], PARAMETERFILE["Latitude difference file","nadcon5.nad27.nad83_1986.alaska.lat.trn.20160901.b"], PARAMETERFILE["Longitude difference file","nadcon5.nad27.nad83_1986.alaska.lon.trn.20160901.b"], USAGE[ SCOPE["Geodesy."], AREA["United States (USA) - Alaska."], BBOX[51.3,172.42,71.4,-129.99]], ID["EPSG",8549], REMARK["Uses NADCON5 method which expects longitudes positive east in range 0-360°; source and target CRSs have longitudes positive east in range -180° to +180°. Accuracy at 67% confidence level is 0.5m onshore, 5m nearshore and undetermined farther offshore."]]]
Definition: JSON
{ "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json", "type": "BoundCRS", "source_crs": { "type": "ProjectedCRS", "name": "NAD27 / Michigan North", "base_crs": { "name": "NAD27", "datum": { "type": "GeodeticReferenceFrame", "name": "North American Datum 1927", "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": 4267 } }, "conversion": { "name": "Michigan CS27 North zone", "method": { "name": "Lambert Conic Conformal (2SP Michigan)", "id": { "authority": "EPSG", "code": 1051 } }, "parameters": [ { "name": "Latitude of false origin", "value": 45.45, "unit": "degree", "id": { "authority": "EPSG", "code": 8821 } }, { "name": "Longitude of false origin", "value": -87, "unit": "degree", "id": { "authority": "EPSG", "code": 8822 } }, { "name": "Latitude of 1st standard parallel", "value": 45.4833333333333, "unit": "degree", "id": { "authority": "EPSG", "code": 8823 } }, { "name": "Latitude of 2nd standard parallel", "value": 47.0833333333333, "unit": "degree", "id": { "authority": "EPSG", "code": 8824 } }, { "name": "Easting at false origin", "value": 2000000, "unit": { "type": "LinearUnit", "name": "US survey foot", "conversion_factor": 0.304800609601219 }, "id": { "authority": "EPSG", "code": 8826 } }, { "name": "Northing at false origin", "value": 0, "unit": { "type": "LinearUnit", "name": "US survey foot", "conversion_factor": 0.304800609601219 }, "id": { "authority": "EPSG", "code": 8827 } }, { "name": "Ellipsoid scaling factor", "value": 1.0000382, "unit": "unity", "id": { "authority": "EPSG", "code": 1038 } } ] }, "coordinate_system": { "subtype": "Cartesian", "axis": [ { "name": "Easting", "abbreviation": "X", "direction": "east", "unit": { "type": "LinearUnit", "name": "US survey foot", "conversion_factor": 0.304800609601219 } }, { "name": "Northing", "abbreviation": "Y", "direction": "north", "unit": { "type": "LinearUnit", "name": "US survey foot", "conversion_factor": 0.304800609601219 } } ] }, "id": { "authority": "EPSG", "code": 6200 } }, "target_crs": { "type": "GeographicCRS", "name": "NAD83", "datum": { "type": "GeodeticReferenceFrame", "name": "North American Datum 1983", "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": 4269 } }, "transformation": { "name": "NAD27 to NAD83 (8)", "method": { "name": "NADCON5 (2D)", "id": { "authority": "EPSG", "code": 1074 } }, "parameters": [ { "name": "Latitude difference file", "value": "nadcon5.nad27.nad83_1986.alaska.lat.trn.20160901.b", "id": { "authority": "EPSG", "code": 8657 } }, { "name": "Longitude difference file", "value": "nadcon5.nad27.nad83_1986.alaska.lon.trn.20160901.b", "id": { "authority": "EPSG", "code": 8658 } } ], "id": { "authority": "EPSG", "code": 8549 } } }
Definition: Mapnik
<?xml version="1.0" encoding="utf-8"?> <Map srs="+proj=lcc +lat_0=45.45 +lon_0=-87 +lat_1=45.4833333333333 +lat_2=47.0833333333333 +x_0=609601.219202438 +y_0=0 +k_0=1.0000382 +datum=NAD27 +units=us-ft +no_defs +type=crs"> <Layer srs="+proj=lcc +lat_0=45.45 +lon_0=-87 +lat_1=45.4833333333333 +lat_2=47.0833333333333 +x_0=609601.219202438 +y_0=0 +k_0=1.0000382 +datum=NAD27 +units=us-ft +no_defs +type=crs"> </Layer> </Map>