O'Reilly logo

Mastering QGIS by GISP Dr. John Van Hoesen, GISP Dr. Richard Smith Jr., GISP Kurt Menke, Dr. Luigi Pirelli

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

Repairing topological errors via topological editing

Once the geometry errors have been identified, the work of repairing the layer begins. In Chapter 1, A Refreshing Look at QGIS, we covered basic vector data editing that included layer-based snapping. In this final section, we will cover how to repair topological geometry errors via topological editing. We will continue to use the parcels.shp data as an example.

Note

Topological editing only works with polygon geometries.

The editing approach taken depends on the topological error you are addressing. In the last section, three types of errors were found: gaps, overlaps, and duplicate geometries. These are three of the most common errors associated with polygon data and we will look at how to repair ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required