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QGIS Dissolve/merge features that overlap

Geographic Information Systems Asked on December 30, 2020

I have a vector layer that I created through classifying an image, isolating a specific class (raster calculator), polygonize, and then created a buffer. I am trying to merge/dissolve/union the polygons that are either touching or overlapping. I’ve tried dissolving and technically it works, but I am only left with one polygon and I need each one for a total count.

Any Suggestions?

Input
enter image description here

Input Attribute Table
enter image description here

Desired Output
enter image description here

Output Attribute Table. Need each polygon shown and not merged as one. So it should look like image 2, but will less features.
enter image description here

One Answer

You have a multi-part polygon. You want to split it into individual polygons. You can do this with Multipart to Single Parts in the Vector toolset. See this answer for more details.

Correct answer by Llaves on December 30, 2020

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