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I have line data that has been symbolozied in ways that I don't have time to understand and would like to make a map that tells me =).

My general question is how to display the lack of data results for queries. I have a bunch of layer files that were built with a bunch of def queries in ArcMap. I will iterate over the line data and for each unique line check for results of applying a def query. If results are returned, a new layer file is created representing that query.

I want to highlight the queries that didn't return results in a silverlight app. So I have all the queries that returned zero records in a database.

I'll be making this map with silverlight but any solid cartography concepts for getting at what's not there are welcome.

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"highlight the queries that didn't return results" ... does this mean you want to highlight the query string? –  Kirk Kuykendall Feb 3 '12 at 3:04
    
Perhaps report it in a graph.. spatially located near those queries that did return results and some how shown relationship to line entities that also didn't return results? –  Justin Feb 3 '12 at 3:13

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