Removing duplicate point features using QGIS

Question

I have created many .gpx data with my Garmin device, but due to the amount of data, I have imported the mapping data from my device several times (also because I didn't want it to be lost).

As a result, I have now many double or even 6 times the same point (including tracks, which I displayed as points also, so that I have the elevation) after I saved all the gpx-files as shapefiles and then merged them.

Is there a way to automatically erase the duplicates with QGIS?

score 31 · Accepted Answer · edited Nov 26 '23 at 17:03

31

Try the mmqgis Plugin.

There, go to Modify -> delete duplicate geometries and select your layer.

edited Nov 26 '23 at 17:03

Taras

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answered Dec 14 '12 at 08:27

GR_

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score 11 · Answer 2 · edited Nov 26 '23 at 17:02

11

You can also use the v.clean tool under GRASS commands in the Processing Toolbox (Ctrl+Alt+T).

To remove duplicates, set the cleaning tool to rmdupl.

edited Nov 26 '23 at 17:02

Taras

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answered Sep 09 '15 at 18:29

user55937

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score 8 · Answer 3 · edited Nov 26 '23 at 17:00

8

You can use the QGIS built-in tool named "Delete duplicate geometries" under Processing Toolbox" > Vector general in the Processing Toolbox (Ctrl+Alt+T).

edited Nov 26 '23 at 17:00

Taras

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answered Nov 25 '23 at 20:42

Kadir Şahbaz

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Taras · Answer 4 · 2023-11-26T17:05:27.330

5

Another solution is the SAGA's "Remove Duplicate Points" tool can be found under SAGA > Features - Points in the Processing Toolbox (Ctrl+Alt+T).

edited Nov 26 '23 at 17:05

answered Nov 26 '23 at 16:58

Taras

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Removing duplicate point features using QGIS

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