On open source geometry processing library focusing on regions and moving regions.

Algorithms for constructing regions, identifying connected components, creating moving regions, and performing operations on moving regions are included.



The parser was written to have a clean and complete parser for WKT. Other WKT to python parsers use regular expression to do the same and are more or less complete. I wanted to have a reference implementation that could handle any kind of valid WKT that you throw at it. You can also use it as a reference if you want to write your own parser with grako.


PyGeoprocessing is a Python/Cython based library that provides a set of commonly used raster, vector, and hydrological operations for GIS processing. Similar functionality can be found in ArcGIS/QGIS raster algebra, ArcGIS zonal statistics, and ArcGIS/GRASS/TauDEM hydrological routing routines.

PyGeoprocessing was developed at the Natural Capital Project to create a programmable, open source, and free GIS processing library to support the ecosystem service software InVEST. PyGeoprocessing’s design prioritizes computation and memory efficient runtimes, easy installation and cross compatibility with other open source and proprietary software licenses, and a simplified set of orthogonal GIS processing routines that interact with GIS data via filename. Specifically the functionally provided by PyGeoprocessing includes

  • programmable raster algebra routine (vectorize_datasets)
  • routines for simplified raster creation and statistics
  • integration with vector based geometry in many of the routines
  • a simplified hydrological routing library

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