2

I converted polygon layer to line layer using "Polygons to Lines" tool. Then I used "Split" function of the Networks plugin. What I need to do next is to remove identical lines that were shared boundary of the touching polygons. I've tried using MMQGIS plugin and v.clean (break,snap,rmline,rmdupl) but nothing works. You can see more details in attached image.

Edit: you can download shapefile here: https://drive.google.com/file/d/0B25RJIaeA41SVmNOUndWWGNlWU0/view?usp=sharing

enter image description here

2

From the Processing Toolbox, run the tool with the suspiciously same name as in MMQGIS: Delete duplicate geometries:

Processing toolbox

Tested this and it reduced the attributes from 525 to 431.

Delete duplicate geometries

Hope this helps!

  • @ZoranPetrović - Awesome buddy, glad it worked :) – Joseph Oct 8 '15 at 12:23
2

An other way is the processing toolbox.

Go to Processing menu > Toolbox. It opens the Processing Toolbox. Here, go to Geoalgorithms > Vector > General tools > Delete duplicate geometries.

1

The MMQGIS plugin has a "Delete duplicate geometries" option.

Install it from the plugin manager.

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