The pyproj
is a Python package that performs cartographic transformations and geodetic computations. It is a Cython wrapper to provide Python interfaces to PROJ.4 functions, meaning you can access an existing library of C code in Python.
PROJ.4 is a projection library that transforms data among many coordinate systems and is also available through GDAL and OGR. The reason that PROJ.4 is still popular and widely used is two-fold:
- Firstly, because it supports so many different coordinate systems
- Secondly, because of the routes it provides to do this—Rasterio and GeoPandas, two Python libraries covered next, both use
pyproj
and thus PROJ.4 functionality under the hood
The difference between using PROJ.4 separately instead of using it with a package such as GDAL is that it enables you to re-project individual points, and packages using PROJ.4 do not offer this functionality.
The pyproj
package offers two classes—the Proj
class and the Geod
class. The Proj
class performs cartographic computations...