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Road Centerline Extractor QGIS 4 compatibility
Not QGIS 4 ready Active
Not yet — the latest version declares max QGIS version 3.99.0, so it is not offered to QGIS 4 users.
Extracts clean, topologically segmented centerlines from road, river, or other corridor-shaped polygons.
About
Version 2.0.0 generalizes this plugin beyond roads and moves it from an interactive dialog to a QGIS Processing algorithm. It converts corridor-shaped polygons (roads, rivers, or similar elongated networks) into centerlines via Voronoi-based skeleton extraction, available from the Processing Toolbox, in batch mode, inside Graphical Models, and from the Python console. Optional processing steps, each independently configurable: segmentation at T-junctions and intersections (splitting the output into individual features between nodes), pruning of short spurious branches below a minimum length, and exclusion of sections narrower than a minimum width. Output length is reported per feature in the unit of choice (m, km, mi, ft). Requires the shapely, networkx and centerline Python packages.
| Author | Roberto Geraldes |
|---|---|
| Downloads | 4,730 |
| Latest version | 2.0.0 |
| Last updated | 2026-09-23 (22 days ago) |
| Min QGIS | 3.28.0 |
| Max QGIS | 3.99.0 |
| QGIS 4 ready | No |
| Maintenance | Active |
| Categories | Network & routing, Vector tools, Hydrology & water |
| Tags | skeleton, centerline, road, polygon, voronoi, medial axis, river, network, processing, line extraction |
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Maintenance: Active = updated within 1 year, Quiet = 1–3 years, Likely abandoned = over 3 years.