opengis-utils-for-java

What problem does it solve?

Provides a unified Java library that removes friction when reading, writing, converting, and analyzing spatial data across multiple GIS formats and engines, so developers no longer need to stitch together GeoTools, GDAL, JTS, and ESRI tooling manually.

Core Features & Use Cases

• Unified Layer Model: OguLayer abstracts features, fields, geometries (WKT), and metadata for consistent read/write workflows.
• Dual-Engine I/O: Automatic selection between GeoTools (pure Java) and GDAL (native) for format support including Shapefile, GeoJSON, FileGDB, and PostGIS.
• Rich Geometry APIs: GeometryUtil offers 60+ geometry operations (format conversions, spatial relations, buffer/union/intersection, topology validation) with both JTS Geometry and WKT-based methods.
• CRS & Utilities: CrsUtil simplifies transformations, zone lookup, and projected WKID mapping; utilities handle encoding, shapefile quirks, and ZIP operations.
• Use Case: Convert a FileGDB layer to GeoJSON, validate and fix invalid geometries, reproject to a target CRS, and export for downstream web mapping.

Quick Start

Use OguLayerUtil.readLayer to load your source layer, apply GeometryUtil operations and CrsUtil for reprojection, then export with OguLayerUtil.writeLayer to the desired format.