Module utm
Veness' Universal Transverse Mercator (UTM) projection.
Classes Utm
and UTMError
and functions parseUTM5, toUtm8 and utmZoneBand5.
Pure Python implementation of UTM / WGS-84 conversion functions using
an ellipsoidal earth model, transcoded from JavaScript originals by
(C) Chris Veness 2011-2016 published under the same MIT Licence**,
see UTM and Module utm.
The UTM system is a 2-dimensional Cartesian coordinate
system providing another way to identify locations on the surface of the
earth. UTM is a set of 60 transverse Mercator projections, normally
based on the WGS-84 ellipsoid. Within each zone, coordinates are
represented as eastings and
northings, measured in metres.
This module includes some of Charles Karney's 'Transverse
Mercator with an accuracy of a few nanometers', 2011 (building on
Krüger's 'Konforme Abbildung des Erdellipsoids in der Ebene',
1912) and C++ class TransverseMercator.
Some other references are Universal Transverse Mercator coordinate system, Transverse Mercator Projection and Henrik Seidel 'Die Mathematik der Gauß-Krueger-Abbildung', 2006.
|
|
UTMError
Universal Transverse Mercator (UTM parse or other Utm issue.
|
|
|
Utm
Universal Transverse Mercator (UTM) coordinate.
|
|
|
parseUTM5(strUTM,
datum=Datum(name='WGS84', ellipsoid=Ellipsoids.WGS84, transform=Tran...,
Utm=<class 'pygeodesy.utm.Utm'>,
falsed=True,
name='')
Parse a string representing a UTM coordinate, consisting of
"zone[band] hemisphere easting northing". |
|
|
|
|
toUtm8(latlon,
lon=None,
datum=None,
Utm=<class 'pygeodesy.utm.Utm'>,
falsed=True,
name='',
strict=True,
zone=None,
**cmoff)
Convert a lat-/longitude point to a UTM coordinate. |
|
|
|
|
utmZoneBand5(lat,
lon,
cmoff=False,
name='')
Return the UTM zone number, Band letter, hemisphere and (clipped)
lat- and longitude for a given location. |
|
|
parseUTM5 (strUTM,
datum=Datum(name='WGS84', ellipsoid=Ellipsoids.WGS84, transform=Tran...,
Utm=<class 'pygeodesy.utm.Utm'>,
falsed=True,
name='')
|
|
Parse a string representing a UTM coordinate, consisting of
"zone[band] hemisphere easting northing".
- Arguments:
strUTM - A UTM coordinate (str).datum - Optional datum to use (Datum,
Ellipsoid, Ellipsoid2 or a_f2Tuple).Utm - Optional class to return the UTM coordinate (Utm) or
None.falsed - Both easting and northing are falsed (bool).name - Optional Utm name (str). - Returns:
- The UTM coordinate (
Utm) or if
Utm is None, a UtmUps5Tuple(zone, hemipole, easting,
northing, band). The hemipole is the
'N'|'S' hemisphere.
- Raises:
UTMError - Invalid strUTM.TypeError - Invalid datum.
|
toUtm8 (latlon,
lon=None,
datum=None,
Utm=<class 'pygeodesy.utm.Utm'>,
falsed=True,
name='',
strict=True,
zone=None,
**cmoff)
|
|
Convert a lat-/longitude point to a UTM coordinate.
- Arguments:
latlon - Latitude (degrees) or an (ellipsoidal) geodetic
LatLon point.lon - Optional longitude (degrees) or None.datum - Optional datum for this UTM coordinate, overriding
latlon's datum (Datum,
Ellipsoid, Ellipsoid2 or a_f2Tuple).Utm - Optional class to return the UTM coordinate (Utm) or
None.falsed - False both easting and northing (bool).name - Optional Utm name (str).strict - Restrict lat to UTM ranges
(bool).zone - Optional UTM zone to enforce (int or
str).cmoff - DEPRECATED, use falsed. Offset longitude
from the zone's central meridian (bool). - Returns:
- The UTM coordinate (
Utm) or if
Utm is None or not
falsed, a UtmUps8Tuple(zone, hemipole, easting,
northing, band, datum, gamma, scale). The
hemipole is the 'N'|'S' hemisphere.
- Raises:
RangeError - If lat outside the valid UTM bands or if
lat or lon outside the
valid range and pygeodesy.rangerrors set to True.TypeError - Invalid datum or latlon not
ellipsoidal.UTMError - Invalid zone.ValueError - If lon value is missing or if
latlon is invalid.
Note:
Implements Karney’s method, using 8-th order Krüger series, giving
results accurate to 5 nm (or better) for distances up to 3,900 Km
from the central meridian.
|
utmZoneBand5 (lat,
lon,
cmoff=False,
name='')
|
|
Return the UTM zone number, Band letter, hemisphere and (clipped) lat-
and longitude for a given location.
- Arguments:
lat - Latitude in degrees (scalar or str).lon - Longitude in degrees (scalar or str).cmoff - Offset longitude from the zone's central meridian
(bool).name - Optional name (str). - Returns:
- A UtmUpsLatLon5Tuple
(zone, band, hemipole,
lat, lon) where hemipole is the
'N'|'S' UTM hemisphere.
- Raises:
RangeError - If lat outside the valid UTM bands or if
lat or lon outside the
valid range and pygeodesy.rangerrors set to True.ValueError - Invalid lat or lon.
|