Learning Geospatial Analysis with Python

Coordinate conversion

When you start working with multiple data sets you'll inevitably end up with data in different coordinate systems and projections. You can convert back and forth between UTM and latitude/longitude using a pure Python module called utm. You can install it using easy_install or pip from PyPI:

https://pypi.python.org/pypi/utm

The utm module is straightforward to use. To convert from UTM to latitude and longitude:

>>> import utm
>>> y = 479747.0453210057
>>> x = 5377685.825323031
>>> zone = 32
>>> band = 'U'
>>> utm.to_latlon(y,x,zone,band)
(48.55199390882121, 8.725555729071763)

The UTM zones are numbered horizontally. However, vertically, the bands of latitude are ordered by English alphabets with a few exceptions. The letters ...