EPSG:3451 NAD83 / Louisiana North (ftUS)
Système projeté (Lambert Conic Conformal (2SP)) en usage : USA - Louisiana - SPCS - N. La définition complète ci-dessous, et la conversion en un clic.
| Code | EPSG:3451 |
|---|---|
| Nom | NAD83 / Louisiana North (ftUS) |
| Type | Système projeté — Lambert Conic Conformal (2SP) |
| Zone d'usage |
USA - Louisiana - SPCS - N United States (USA) - Louisiana - counties of Avoyelles; Bienville; Bossier; Caddo; Caldwell; Catahoula; Claiborne; Concordia; De Soto; East Carroll; Franklin; Grant; Jackson; La Salle; Lincoln; Madison; Morehouse; Natchitoches; Ouachita; Rapides; Red River; Richland; Sabine; Tensas; Union; Vernon; Webster; West Carroll; Winn. |
| Emprise | O -94,05° · S 30,85° · E -90,86° · N 33,03° |
| Pays | États-Unis |
| Datum | North American Datum 1983 |
| Ellipsoïde | GRS 1980 a = 6378137 m · 1/f = 298.257222101 |
| Système géographique de base | EPSG:4269 — NAD83 |
| Unité | US survey foot (X east, Y north) |
| Transformation vers WGS 84 | NAD83 to WGS 84 (1) (EPSG:1188) — précision 4 m |
| Usage | Engineering survey, topographic mapping. |
Paramètres de la projection
| Paramètre | Valeur | Unité |
|---|---|---|
| Latitude of false origin | 30.5 | degree |
| Longitude of false origin | -92.5 | degree |
| Latitude of 1st standard parallel | 32.666666666666664 | degree |
| Latitude of 2nd standard parallel | 31.166666666666668 | degree |
| Easting at false origin | 3280833.3333 | US survey foot |
| Northing at false origin | 0 | US survey foot |
Définition proj4
+proj=lcc +lat_0=30.5 +lon_0=-92.5 +lat_1=32.6666666666667 +lat_2=31.1666666666667 +x_0=999999.99998984 +y_0=0 +a=6378137 +rf=298.257222101 +units=us-ft +towgs84=0,0,0 +no_defsÀ coller dans QGIS, proj4js, PostGIS (spatial_ref_sys) ou GDAL. +towgs84 porte la transformation EPSG vers WGS 84 ; le code officiel reste EPSG:3451.
WKT (format ESRI, contenu du .prj)
PROJCS["NAD_1983_StatePlane_Louisiana_North_FIPS_1701_Feet",GEOGCS["GCS_North_American_1983",DATUM["D_North_American_1983",SPHEROID["GRS_1980",6378137.0,298.257222101]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Lambert_Conformal_Conic"],PARAMETER["False_Easting",3280833.3333],PARAMETER["False_Northing",0.0],PARAMETER["Central_Meridian",-92.5],PARAMETER["Standard_Parallel_1",32.6666666666667],PARAMETER["Standard_Parallel_2",31.1666666666667],PARAMETER["Latitude_Of_Origin",30.5],UNIT["US survey foot",0.304800609601219]]Autres systèmes — États-Unis
- EPSG:3437NAD83 / New Hampshire (ftUS)
- EPSG:3438NAD83 / Rhode Island (ftUS)
- EPSG:3441NAD83(HARN) / Arkansas North (ftUS)
- EPSG:3442NAD83(HARN) / Arkansas South (ftUS)
- EPSG:3443NAD83(HARN) / Illinois East (ftUS)
- EPSG:3444NAD83(HARN) / Illinois West (ftUS)
- EPSG:3445NAD83(HARN) / New Hampshire (ftUS)
- EPSG:3446NAD83(HARN) / Rhode Island (ftUS)
- EPSG:3452NAD83 / Louisiana South (ftUS)
- EPSG:3453NAD83 / Louisiana Offshore (ftUS)
- EPSG:3455NAD83 / South Dakota South (ftUS)
- EPSG:3456NAD83(HARN) / Louisiana North (ftUS)
- EPSG:3457NAD83(HARN) / Louisiana South (ftUS)
- EPSG:3458NAD83(HARN) / South Dakota North (ftUS)
- EPSG:3459NAD83(HARN) / South Dakota South (ftUS)
- EPSG:3463NAD83 / Maine CS2000 Central
- EPSG:3464NAD83(HARN) / Maine CS2000 Central
- EPSG:3465NAD83(NSRS2007) / Alabama East
Source : registre EPSG v11.022 (IOGP), via la base PROJ. Vérifiez toujours un code sur epsg.org avant un travail contractuel.