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I want to collect polygon features from my layer to create one polygon features by considering the field attributes. I mean in attribute table if "DN" value of feature is 1000 that feature will be selected. After that all selected features should be treat as one polygon. I want to make it on the same layer without creating another layers etc. Is it possible by using pyqgis?

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The selected features should be one polygon feature.

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I don't know if this would be of help but it was helpful for me during the same process but creating different feature. How to "Merge Selected Features" with python?

  • combine command merge neighbour polygons. It does not look suitable for me – Mustafa Uçar Jun 29 '18 at 20:21

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