coordinate-reference-system

Projections iOS Library

Coordinate Reference Systems Java Library

Python library for transformation of geographic coordinates between WGS84 and the Swedish coordinate reference systems SWEREF99 and RT90

Polars plugin for coordinate transformation and more

Generic geographical library for Swift

GeoPose enables the easy integration of digital elements on and in relation to the surface of the planet.

Coordinate Reference Systems iOS Library

Projections Java Library

TypeScript library for transformation of geographic coordinates between WGS84 and the Swedish coordinate reference systems SWEREF99 and RT90

An in-browser spatial coordinate editor, point-cloud transformer, and AI-powered CRS detection workspace for MIKE by DHI & GIS data workflows.

Comprehensive, production-tested guides on automated spatial data validation and quality control — geometry & topology validity, CRS precision, schema enforcement, governance, validation pipelines, and tooling. Runnable Python & SQL for GIS analysts, QA engineers, data stewards, and compliance teams.

Adding timing and location to traditional types of data and to build data visualizations.

Production-grade Python for cadastral & high-precision coordinate transformation — NTv2/NADCON grid shifts, projection math, Helmert transforms, and survey-grade validation. Source for www.coordinatetransformation.org

DEPRECIATED - This workshop discusses coordinate reference systems (projections) and gives examples in R. It can be expanded to give examples in other tools.

Deterministic geospatial data standardization & schema mapping automation — INSPIRE, FGDC, OGC, ISO 19115. Runnable Python guides for CRS normalization, attribute ETL, validation gates, and compliance/audit reporting.

Provide geographic coordinates from bounding boxes.

A QGIS failure mode with no error message: how a remote ArcGIS layer can silently reassign your project CRS and move every generated map to the wrong hemisphere.

JVM (Scala/Java) library for transformation of geographic coordinates between WGS84 and the Swedish coordinate reference systems SWEREF99 and RT90

C#.NET library for transformation of geographic coordinates between WGS84 and the Swedish coordinate reference systems SWEREF99 and RT90

GitHub Action and Python CLI that scans vector and raster datasets for mixed, missing or implausible coordinate reference systems, reprojects what it can safely transform, and fails the build on cases it refuses to guess at.