Keep topology when simplifying polygons

[qgib]

Author Name: shenriod - (shenriod -)
Original Redmine Issue: 12753

Redmine category:simplification

---

When using the "simplify" tool on a polygon layer, the topology is destroyed and many gaps appear between polygons that were contiguous in the original layer.

Allowing to keep the topology would be an amazing improvement for this tool. A bit like what ArcGIS offers with the "RESOLVE ERRORS" flag: http://resources.arcgis.com/en/help/main/10.2/index.html#/Simplify_Polygon/007000000011000000/

I'm not sure however whether it is a realistic request or whether it would require huge resources?

Thanks and cheers

Stéphane

[qgib]

Author Name: shenriod - (shenriod -)

---

NB: I mean when using the "Simplify" tool in the Vector menu (to simplify a layer), not the "Simplify" tool in the Advanced Editing toolbar (to simplify only a few objects)

[qgib]

Author Name: Giovanni Manghi (@gioman)

---

Simplification/generalization maintain topology for adjacent polygons is a complex operation that in QGIS you can do very efficiently using the v.generalize tool (from GRASS) inside the QGIS Processing toolbox.

---

• resolution was changed from to wontfix
• status_id was changed from Open to Closed