GeometryOps.jl is a package for geometric calculations on (primarily 2D) geometries.

The driving idea behind this package is to unify all the disparate packages for geometric calculations in Julia, and make them GeoInterface.jl-compatible. We are focusing primarily on 2/2.5D geometries for now. All methods in this package will consume any geometry which is compatible with GeoInterface - see its integrations page for more info on that!

Most of the use cases are driven by GIS and similar Earth data workflows, so this might be a bit specialized towards that, but methods should always be general to any coordinate space.

We welcome contributions, either as pull requests or discussion on issues!

GeometryOps tries to offer most of the basic geometry operations you'd need, implemented in pure Julia and accepting any GeoInterface.jl compatible type.

• General geometry methods (OGC methods): equals, extent, distance, crosses, contains, intersects, etc
• Targeted function application over large nested geometries (apply) and reduction over geometries (applyreduce)
• signed_area, centroid, distance, etc for valid geometries
• Line and polygon simplification (simplify)
• Polygon clipping, intersection, difference and union
• Generalized barycentric coordinates in polygons (barycentric_coordinates)
• Projection of geometries between coordinate reference systems using Proj.jl
• Polygonization of raster images by contour detection (polygonize)

See the "API" page in the docs for a more complete list!

• Arclength interpolation (absolute and relative)
• Buffering, hulls (convex and otherwise)
• Checks for valid geometries (empty linestrings, null points, etc) (#14)
• Operations on spherical (non-Euclidean) geometry (#17)