[Qgis-user] Beginner: How to find duplicate points with the Topology Checker plug-in

[Robert Harris]

Hello All,

I am a beginner using 2.0.1-Dufour on Ubuntu 12.04.

I digitized a poly line into a shapefile that represents a water 
feature. I used Vector/Extract Nodes to create a point shapefile. I 
added fields to the attribute table with longitude and latitude of each 
point with the Field Calculator. I imported the attribute table into an 
MS Access database and used the Find Duplicates query wizard to find 11 
pairs of duplicate points in 2052 total points. The points are needed 
for use with the Google Maps API.

I tried the Vector/Topology Checker plug-in with a "must not have 
duplicates" rule to find the duplicate points and received a "0 errors 
were found" message.

What am I missing when using the Topology Checker plug-in?

Thank you.

Robert Harris, Volunteer
Georgia River Network
http://www.garivers.org/



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