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To create a means of displaying information about the distribution of primary care providers, the population density and the average yearly Medicare expenditure per enrollee for each state, I would like to create a US map with the state boundaries indicated, and then display a tool tip box containing the data for that state when the cursor hovers over that state. CountryData["UnitedStates"] does not have a map that includes the state boundaries.

In addition, I would like to colorize the states to indicate the value of a given parameter for that state, such as age-adjusted average yearly cost per Medicare Enrollee, by reference to a color scale.

I have not been able to find the Mathematica 9 code for an interactive US map in the Mathematica demonstrations and I am interested in suggestions or working code that I could use. My level of proficiency with Mathematica 9 is somewhere between beginner and intermediate, so I appreciate the details that might not be necessary for explaining the solution to an experienced user.

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  • $\begingroup$ There are three or four questions here that have tried to make USA state maps because CountryData doesn't do them. Have a search through them and see if anything gives you a starting point. $\endgroup$
    – cormullion
    Commented Jul 29, 2013 at 21:31
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    $\begingroup$ How about this kml file? $\endgroup$
    – Sjoerd C. de Vries
    Commented Jul 29, 2013 at 21:33
  • $\begingroup$ @SjoerdC.deVries from this question perhaps? $\endgroup$
    – cormullion
    Commented Jul 29, 2013 at 21:35
  • $\begingroup$ @cormullion actually just from a Google search. About the 4th hit on the page. $\endgroup$
    – Sjoerd C. de Vries
    Commented Jul 29, 2013 at 21:38
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    $\begingroup$ @bobthechemist They are in there. Look for the STATES.state.name field name. $\endgroup$
    – Sjoerd C. de Vries
    Commented Jul 30, 2013 at 7:05

1 Answer 1

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Part of the code taken from the question posted by @Cormullion

       crimestats =   WolframAlpha[   "Murder rate by state", {{"PropertyRanking:CrimeData", 1}, 
        "ComputableData"}];
        crimestats =   MapThread[Rule, {crimestats[[All, 2]], #[[1]] & /@ crimestats[[All, 3]]}];
        usa = Import["http://code.google.com/apis/kml/documentation/us_states.kml","Data"];
        transform[s_] := StringTrim[s, Whitespace ~~ "(" ~~ ___ ~~ ")"];
        polygons =   Thread[transform["PlacemarkNames" /. usa[[1]]] -> ("Geometry" /. usa[[1]])];
        stateNames = Extract[stateNames,Position[stateNames, x_ /; x != "Alaska" && x !="Hawaii"]];
        origdata = (stateNames /. polygons)[[All, 2 ;;, 1]];
        values = stateNames /. crimestats;
        colors = Module[{val = values, min, max, int}, min = Min@val; 
                         max = Max@val; int = Floor[#/((max - min)/4)] + 1 & /@ val; 
                         ColorData[8, "ColorList"][[#]] & /@ int];
        Show[Graphics[
                       Table[{EdgeForm[Directive[Black, AbsoluteThickness[0.5]]], 
                       colors[[i]], Tooltip[Polygon[origdata[[i]]], 
                                         Column[{stateNames[[i]], values[[i]]}]]}, {i, Length@origdata}], 
                       AspectRatio -> Automatic, ImageSize -> Large]]
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  • $\begingroup$ You're missing a preliminary definition for stateNames — stateNames = polygons[[All, 1]]; $\endgroup$
    – rm -rf ♦
    Commented Jul 30, 2013 at 2:51
  • $\begingroup$ @rm-rf thanks for fixing. Skipped it during cut an paste. $\endgroup$
    – Zviovich
    Commented Jul 30, 2013 at 13:27

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