geogtran

geodetic_engine.persistablereference.geogtran(operation, name='')[source]

State one coordinate transformation as an ESRI GEOGTRAN.

Parameters:

  • operation (CoordinateOperation) – A single step transformation between two geographic CRSs.

  • name (str, default: "") – Name to state, defaulting to the operation’s own.

Return type:

Node

Returns:

The GEOGTRAN, ready to be written by write().

Raises:

  • UnsupportedMethodError – If ESRI has no equivalent for the method or one of its parameters.

  • UnsupportedReferenceError – If the operation is not a single step between two geographic CRSs, states offsets across a prime meridian change that ESRI cannot state unambiguously, or states an accuracy that is not one non-negative number of metres.

  • MalformedReferenceError – If PROJ will not write either CRS as ESRI WKT.

Example

>>> operation = CoordinateOperation.from_authority("EPSG", "1612")
>>> esriwkt.write(geogtran(operation))[:31]
'GEOGTRAN["ED50 to WGS 84 (23)",'