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projection_type [2016/11/22 21:52] hermann |
projection_type [2016/11/22 21:59] hermann [Using a Proj4 description] |
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| ====== Projection Type ====== | ====== Projection Type ====== | ||
| - | Represents a [[wp>Map_projection|map projection]]. Projections can be defined using the predefined options (UTM, Geodetic etc) or using a WKT specification. | + | Represents a [[wp>Map_projection|map projection]]. Projections can be defined using the predefined options (UTM, Geodetic etc), using a WKT specification, using an EPSG code or using a Proj4 specification. |
| WKT specifications must follow the [[wkt format|standard syntax]]. See the example below: | WKT specifications must follow the [[wkt format|standard syntax]]. See the example below: | ||
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| PARAMETER["false_northing",10000000], | PARAMETER["false_northing",10000000], | ||
| UNIT["Meter",1]] | UNIT["Meter",1]] | ||
| + | |||
| + | The Proj4 syntax must also follow the [[http://proj4.org/parameters.html|Proj4 specification syntax]]. Example: | ||
| + | |||
| + | [ +proj=latlong +ellps=GRS80 +towgs84=-199.87,74.79,246.62 ] | ||
| ===== GUI Editor ===== | ===== GUI Editor ===== | ||
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| </code> | </code> | ||
| - | The syntax used to the represent the WKT_PROJECTION can be found [[http://www.proj4.org|here]]. | + | The syntax used to the represent the PROJ4_PROJECTION can be found [[http://proj4.org/parameters.html|here]]. |
| Example: | Example: | ||