geodiff

geodiff is a library for handling differences in geospatial data, supporting formats like GeoPackage files and PostGIS databases, as well as non-spatial SQLite and PostgreSQL. It is actively utilized by Mergin Maps - a platform for easy sharing of spatial data. This tool is analogous to the diff and patch utilities found in the UNIX world, but specifically tailored for spatial data.

The primary use case for geodiff involves comparing two datasets with identical table structures to identify and generate a "diff" file. This diff file encapsulates all insertions, updates, and deletions that have occurred between the two datasets. Once created, this diff file can be applied to an existing dataset, systematically updating it by incorporating all the recorded changes.

This functionality makes geodiff invaluable for version control and synchronization of geospatial information, enabling efficient management of changes without needing to transfer entire datasets. It streamlines collaborative projects and data maintenance by providing a robust mechanism for tracking and applying modifications.