Displaying feature data from multiple layers in one map tip?

Permanently deleted user

28. September 2016 16:36

Is it possible to display data from multiple layers in one map tip or selection?  I see this question was asked in 2014 without any response but would really love this ability!

 

James

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  John Nerge

  30. September 2016 16:27

  Short answer: Yes, with data links.

   

  Long answer:

   

  It depends on what exactly you're trying to display. For an example, let's say you have a parcel and want to display information about what districts it's in. You could create a one to one data link that uses a spatial query that looks something like:

   

  SELECT

   

  district1.name AS [District 1 Name],

   

  district2.name AS [District 2 Name]

   

  FROM

   

  parcels, district1, district2

   

  WHERE

   

  district1.shape.STContains(parcels.shape.STCentroid()) = 1

   

  district2.shape.STContains(parcels.shape.STCentroid()) = 1

   

  AND parcels.ID = @parcelID

   

  Then in your parcel map tip you'd add {DataLinkName.District 1 Name} and {DataLinkName.District 2 Name}.

   

  Alternative answer:

   

  Use the same query to create a spatial view and use it in your site instead because its faster than a data link. Faster yet would be to create a cut of the data with all of the district info pre-calculated. Here's a working example: https://gis.brooklynpark.org/neighborhoodinfo.

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