EPSG:22291 Cape / Lo31
Système projeté (Transverse Mercator (South Orientated)) en usage : South Africa - 30°E to 32°E. La définition complète ci-dessous, et la conversion en un clic.
| Code | EPSG:22291 |
|---|---|
| Nom | Cape / Lo31 |
| Type | Système projeté — Transverse Mercator (South Orientated) |
| Zone d'usage |
South Africa - 30°E to 32°E South Africa - onshore between 30°E and 32°E. Eswatini (Swaziland). |
| Emprise | O 29,99° · S -31,38° · E 32,02° · N -22,22° |
| Pays | Afrique du Sud |
| Datum | Cape |
| Ellipsoïde | Clarke 1880 (Arc) a = 6378249.145 m · 1/f = 293.4663077 |
| Système géographique de base | EPSG:4222 — Cape |
| Unité | metre (Y west, X south) |
| Transformation vers WGS 84 | Cape to WGS 84 (1) (EPSG:1128) — précision 9 m |
| Usage | Cadastre, engineering survey, topographic mapping (large and medium scale). |
Paramètres de la projection
| Paramètre | Valeur | Unité |
|---|---|---|
| Latitude of natural origin | 0 | degree |
| Longitude of natural origin | 31 | degree |
| Scale factor at natural origin | 1 | unity |
| False easting | 0 | metre |
| False northing | 0 | metre |
Définition proj4
+proj=tmerc +axis=wsu +lat_0=0 +lon_0=31 +k=1 +x_0=0 +y_0=0 +a=6378249.145 +rf=293.4663077 +units=m +towgs84=-136,-108,-292 +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:22291.
WKT (format ESRI, contenu du .prj)
PROJCS["Cape_Lo31",GEOGCS["GCS_Cape",DATUM["D_Cape",SPHEROID["Clarke_1880_Arc",6378249.145,293.4663077]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Transverse_Mercator_South_Orientated"],PARAMETER["latitude_of_origin",0.0],PARAMETER["central_meridian",31.0],PARAMETER["scale_factor",1.0],PARAMETER["false_easting",0.0],PARAMETER["false_northing",0.0],UNIT["Meter",1.0]]Autres systèmes — Afrique du Sud
- EPSG:2049Hartebeesthoek94 / Lo21
- EPSG:2050Hartebeesthoek94 / Lo23
- EPSG:2051Hartebeesthoek94 / Lo25
- EPSG:2052Hartebeesthoek94 / Lo27
- EPSG:2053Hartebeesthoek94 / Lo29
- EPSG:2054Hartebeesthoek94 / Lo31
- EPSG:2055Hartebeesthoek94 / Lo33
- EPSG:4148Hartebeesthoek94
- EPSG:9221Hartebeesthoek94 / ZAF BSU Albers 25E
- EPSG:9222Hartebeesthoek94 / ZAF BSU Albers 44E
- EPSG:22277Cape / Lo17
- EPSG:22279Cape / Lo19
- EPSG:22281Cape / Lo21
- EPSG:22283Cape / Lo23
- EPSG:22285Cape / Lo25
- EPSG:22287Cape / Lo27
- EPSG:22289Cape / Lo29
- EPSG:22293Cape / Lo33
Source : registre EPSG v11.022 (IOGP), via la base PROJ. Vérifiez toujours un code sur epsg.org avant un travail contractuel.