Geometry Tools
Multipart to singlepart, dissolve, clip, merge, centroid/point-on-surface, vertices to points, polygon boundary to lines, area/length fields, exact-duplicate detection, and coordinate precision reduction.
How to use
- Pick a dataset from your workspace as the working dataset, or paste/upload a fresh GeoJSON.
- Run any operation — each one edits the working dataset in place and is recorded in its operation history (visible on the Workspace page), rather than silently overwriting it with no trace.
- Clip and Merge need a second dataset (a boundary polygon, or a partner to merge in) — pick or paste one the same way as the working dataset.
- Centroid can land OUTSIDE a concave shape, a MultiPolygon whose parts don't touch, or a polygon with a large hole — use Point on Surface when a guaranteed-inside point matters.
- Exact-duplicate detection is coordinate-exact (same order, same ring winding) — it will not catch a topologically-identical shape stored with different coordinate order.
- Dissolve keeps only the group field and a feature count on the merged shape — other attributes aren't averaged or summed automatically.
Geometry Tools Coverage
Applies multipart-to-singlepart, dissolve-by-field, clip, merge, centroid/point-on-surface, vertices-to-points, polygon-boundary-to-lines, an area/length calculated field, exact-duplicate-geometry detection, and coordinate precision reduction to a workspace dataset. Each operation edits the dataset in place and is recorded in its operation history.
Centroid can land OUTSIDE a concave shape or a MultiPolygon whose parts don't touch — Point on Surface is offered alongside it for when a guaranteed-inside point matters. Duplicate detection is explicitly coordinate-exact (same order, same ring winding), not topological-equality detection.
Frequently asked questions
Does Dissolve keep all the original attributes?
No — the dissolved shape keeps only the field you grouped by and a feature count. To sum or average other fields, use Spatial Join's per-zone aggregation instead.
What kind of duplicate geometry does this miss?
This tool only catches an EXACT coordinate-for-coordinate match (same order, same ring winding) — a topologically identical shape stored with coordinates in a different order won't be flagged, and that scope is stated explicitly rather than implied to be broader.