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# Module epsg

European Petroleum Survey Group (EPSG) en-/decoding.

Classes Epsg and EPSGError and functions to encode and decode2 (EPSG) codes from and to UTM and UPS zones.

A pure Python implementation transcoded from Charles Karney's C++ class UTMUPS, including coverage of UPS as zone `0`.

Version: 21.06.09

Classes
| Epsg EPSG class, a named `int`.
| EPSGError EPSG encode, decode or other Epsg issue.

Functions
decode2(epsg) Determine the UTM/USP zone and hemisphere from a given EPSG. |
encode(zone, hemipole='', band='') Determine the EPSG code for a given UTM/UPS zone number, hemisphere/pole and/or Band. |

Variables
| __all__ = `_ALL_LAZY.epsg`

Function Details

### decode2 (epsg) |
Determine the UTM/USP zone and hemisphere from a given EPSG. Arguments: `epsg` - The EPSG (Epsg, `str` or `scalar`). Returns: A UtmUps2Tuple`(zone, hemipole)`. Raises: `EPSGError` - Invalid `epsg`. Note: Coverage of UPS as zone `0` follows Karney's function UTMUPS::DecodeEPSG.

### encode (zone, hemipole='', band='') |
Determine the EPSG code for a given UTM/UPS zone number, hemisphere/pole and/or Band. Arguments: `zone` - The (longitudinal) UTM zone (`int`, 1..60) or UPS zone (`int`, 0) or UTM zone with/-out (latitudinal) Band letter (`str`, '01C'..'60X') or UPS zone with/-out (polar) Band letter (`str`, '00A', '00B', '00Y' or '00Z'). `hemipole` - UTM/UPS hemisphere or UPS projection top/center pole (`str`, `'N[orth]'` or `'S[outh]'`). `band` - Optional (latitudinal) UTM or (polar) UPS Band letter (`str`). Returns: `EPSG` code (Epsg). Raises: `EPSGError` - Invalid `zone`, `hemipole` or `band`. Note: Coverage of UPS as zone `0` follows Karney's function UTMUPS::EncodeEPSG.