Topology Checker Plugin for Quantum GIS
Why Geographic Information Systems Stack Exchange recommends it
GIS Stack Exchange answerers point people to it as a quick visual demonstration of QGIS's Topology Checker plugin when asked how to find pseudo nodes, duplicates, overlaps, or other topology errors.
Recommended by 3 people across 3 different months, 2013 to 2014.
What it is
A 54-second screen demo by Vinayan MP of the Topology Checker plugin for Quantum GIS (QGIS), showing how it finds topology errors in vector layers. The description links to the plugin's source code on GitHub.
What people said
Recommends underdark · 2013-03 · Geographic Information Systems Stack Exchange · on “Checking Topology using QGIS”
The new Topology Checker Plugin will be available in the next release. You can see it at work in this video: [this video] More info: [LINK]
Recommends spatialhast · 2013-07 · Geographic Information Systems Stack Exchange · on “Finding pseudo nodes in free GIS software?”
Solution for finding pseudo nodes (and other topology rules) available in QGIS 1.9.0 master (2.0) - plugin "Topology Checker". Links: Topology Checker plugin on YouTube [this video] , Topology Checker plugin on GitHub [LINK]
Recommends Luigi Pirelli · 2014-09 · Geographic Information Systems Stack Exchange · on “GIS analysis to find duplicate geometries”
ok: a description of the plugin is here: [LINK] and "must not overlap" can approach the problem. A video guide of the plugin is here: [this video]
Cites spatialhast · 2013-08 · Geographic Information Systems Stack Exchange · on “How to identify and eliminate overlaying polygons in Quantum GIS?”
For QGIS 1.9.0 master (2.0) available plugin "Topology Checker". Links: Topology Checker plugin on YouTube [this video] , Topology Checker plugin on GitHub [LINK] . There is included 'must not overlap' and 'must not have duplicates' topology rules.