EPSG:3395 WGS 84 / World Mercator
Système projeté (Mercator (variant A)) en usage : World - between 80°S and 84°N. La définition complète ci-dessous, et la conversion en un clic.
| Code | EPSG:3395 |
|---|---|
| Nom | WGS 84 / World Mercator |
| Type | Système projeté — Mercator (variant A) |
| Zone d'usage |
World - between 80°S and 84°N World between 80°S and 84°N. |
| Emprise | O -180,00° · S -80,00° · E 180,00° · N 84,00° |
| Pays | Monde |
| Datum | World Geodetic System 1984 |
| Ellipsoïde | WGS 84 a = 6378137 m · 1/f = 298.257223563 |
| Système géographique de base | EPSG:4326 — WGS 84 |
| Unité | metre (E east, N north) |
| Transformation vers WGS 84 | Aucune : c'est WGS 84 |
| Usage | Very small scale conformal mapping. |
Paramètres de la projection
| Paramètre | Valeur | Unité |
|---|---|---|
| Latitude of natural origin | 0 | degree |
| Longitude of natural origin | 0 | degree |
| Scale factor at natural origin | 1 | unity |
| False easting | 0 | metre |
| False northing | 0 | metre |
Définition proj4
+proj=merc +lon_0=0 +k=1 +x_0=0 +y_0=0 +datum=WGS84 +units=m +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:3395.
WKT (format ESRI, contenu du .prj)
PROJCS["WGS_1984_World_Mercator",GEOGCS["GCS_WGS_1984",DATUM["D_WGS_1984",SPHEROID["WGS_1984",6378137.0,298.257223563]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Mercator"],PARAMETER["False_Easting",0.0],PARAMETER["False_Northing",0.0],PARAMETER["Central_Meridian",0.0],PARAMETER["Standard_Parallel_1",0.0],UNIT["Meter",1.0]]Autres systèmes — Monde
- EPSG:3408NSIDC EASE-Grid North
- EPSG:3409NSIDC EASE-Grid South
- EPSG:3410NSIDC EASE-Grid Global
- EPSG:3411NSIDC Sea Ice Polar Stereographic North
- EPSG:3412NSIDC Sea Ice Polar Stereographic South
- EPSG:3413WGS 84 / NSIDC Sea Ice Polar Stereographic North
- EPSG:3571WGS 84 / North Pole LAEA Bering Sea
- EPSG:3572WGS 84 / North Pole LAEA Alaska
- EPSG:3573WGS 84 / North Pole LAEA Canada
- EPSG:3574WGS 84 / North Pole LAEA Atlantic
- EPSG:3575WGS 84 / North Pole LAEA Europe
- EPSG:3576WGS 84 / North Pole LAEA Russia
- EPSG:3857WGS 84 / Pseudo-Mercator
- EPSG:3976WGS 84 / NSIDC Sea Ice Polar Stereographic South
- EPSG:3995WGS 84 / Arctic Polar Stereographic
- EPSG:3996WGS 84 / IBCAO Polar Stereographic
- EPSG:4087WGS 84 / World Equidistant Cylindrical
- EPSG:4231ED87
Source : registre EPSG v11.022 (IOGP), via la base PROJ. Vérifiez toujours un code sur epsg.org avant un travail contractuel.