I am curious to know if it is possible to dissolve only the selected features in a layer in QGIS. In ArcGIS this is the default behaviour (which was actually someone annoying most of the time), but it can be useful to avoid having to export all the features to be dissolved to a new file, dissolving them, and then pasting them back into the original. Is this possible in QGIS? I do not see it in the Vector > Geoprocessing Tools > Dissolve dialog.

  • Select the features
  • Launch the Dissolve tool

It should as simple as that. No checkbox, the default behaviour is to use selected items, I think.

  • Oh wow, strange, I thought that this wasn't working but I just tried it again and it does indeed behave as you described. I must have accidentally had the selection on the wrong layer earlier. Thank you. – wfgeo Sep 29 '17 at 15:54

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