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This is a follow-up of How to create a gradient color expression in data defined properties

How can I remove specific centroid simple markers? For example, Florida, Kentucky, and Rhode Island all have two markers. I would like to remove one from each state.

Any ideas?

Simple Markers with data defined properties (size and color) - (but too many markers)

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  • Couldn't you just delete the points from the layer?
    – Nathan W
    Commented Jul 10, 2014 at 2:03
  • I can't - Editing and selecting one rogue state point selects the other one, such that I would delete both the points (and in some cases the state as well). Commented Jul 10, 2014 at 3:05
  • Ahh multi point. You can use the tools in QGIS to split them into single point objects.
    – Nathan W
    Commented Jul 10, 2014 at 3:14
  • OK - I installed multi part, but when I choose the layer that I have defined the centroid points in, and save a new output .shp file, I have the same initial issue. Is there a way to select only the points, save those all as separate polygons, and then delete the ones I need to? Commented Jul 10, 2014 at 3:23

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As far as I can see there is no way to tell the centroid renderer to only mark the biggest polygon of a multipolygon feature. Seems like you have to use the diagrams after all in this case.

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