wandergis/coordtransform
Coordtransform
coordtransform is a coordinate transformation library and map projection utility used to convert geographic coordinates between WGS84, GCJ02, and BD09 systems. It functions as a geographic coordinate converter that transforms longitude and latitude values to align map data across different providers.
The library specifically handles the shifts and offsets required for Chinese map integration, ensuring that spatial data aligns correctly when moving coordinates between these international and regional mapping standards.
Its capabilities cover GIS data alignment and location data normalization, which standardizes various coordinate system formats into a single consistent format for analysis or storage.
Features
- Map Coordinate Converters - Transforms longitude and latitude between WGS84, GCJ02, and BD09 systems to correct offsets from national encryption policies.
- Map Projection Offset Correctors - Adjusts GPS or API-derived coordinates to align with the specific projections used by map providers like Baidu and Gaode.
- Geographic Coordinate Conversion Libraries - Provides a dedicated library interface for converting between the three major Chinese map coordinate systems.
- Coordinate Transformations - Provides mathematical operations to convert geographic points between different reference frames and projections.
- Geographic Coordinate Converters - Transforms geographic coordinates between different map projection systems and datums for accurate alignment.
- Map Coordinate Offset Correctors - Adjusts coordinates to align with the specific projection offsets required by Chinese map providers.
- Spatial Data Alignments - Corrects spatial data shifts when moving coordinates between international and regional mapping standards.
- Location Data Normalizations - Standardizes various coordinate system formats into a single consistent format for analysis or storage.
- Pure Functional Logic Implementations - Uses deterministic functions to calculate coordinate transformations without side effects or external state modification.
- Stateless Architectures - Employs a stateless architecture to ensure consistent coordinate conversions independently of previous operations.
