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I have a polygon layer in Carto where polygons overlap. I need to display both sets of attributes for overlapping polygons when a user clicks on them. Is this possible?

For example if PolygonA has attribute NAME=A and PolygonB is NAME=B and the two overlap, and I click on the area where they overlap, I want to see an info window, or multiple windows, that show both A and B.

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I don't think you can do that with default BUILDER interactivity behavior. You need to do a custom application and use the SQL API to interrogate the layer by the position to get all the features that intersect it.

  • Your solution is a bit over my head so trying to simplify scope. What if i just want to have the overlapping area labelled with both values without the user clicking on the overlap? It seems I can display the polygon to indicate there is an overlap with the composite operation options, but I can't see a similar kind of display trick for the labels. Any suggestions for that? – user25644 Feb 28 '17 at 18:39
  • nothing aside of allowing overlapping labels, sorry – Jorge Sanz Mar 8 '17 at 14:00

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