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I am using GeoRegionValuePlot to create color coded county maps of a given state. Color is determined from the value given with a rule. I would like that same value specified in the rule to be displayed when I mouse-click on the county as displayed in the GeoRegionValuePlot graph. Nothing I have read in the documentation gives me any idea on how to do this or whether it can be done. I can't find any examples of Tooltip used along with Geo maps.

My current GeoRegionValuePlot is given below:

GeoRegionValuePlot[countyRules, PlotStyle -> Directive[EdgeForm[{Black}]], ImageSize ->500, GeoBackground -> None, GeoProjection -> {"LambertAzimuthal"},PlotLegends -> Automatic]

Where countyRules is a list of county entity rules for all counties of the state.

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1 Answer 1

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You can use Tooltip as the setting for the option GeoLabels:

countriesandvalues = {Entity["Country", "France"] -> 3, 
   Entity["Country", "Germany"] -> 1, Entity["Country", "Italy"] -> 8};

GeoRegionValuePlot[countriesandvalues, 
 GeoLabels -> (Tooltip[#, Row[{CommonName@#2, " :", #4}]] &)]

enter image description here

Note: GeoRegionValuePlot >> Details and Options

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  • $\begingroup$ Works Perfectly. Thanks! $\endgroup$
    – K7PEH
    May 31, 2021 at 14:31

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