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Shaded Area Map by City using ZIP code as input

This is a discussion on Shaded Area Map by City using ZIP code as input within the MapPoint Desktop Discussion forums, part of the Map Forums category; I am trying to produce a Shaded Area map where US cities are shaded based on a count field. The ...

  1. #1
    kdulaney is offline Junior Member White Belt
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    Jan 2005
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    Shaded Area Map by City using ZIP code as input

    I am trying to produce a Shaded Area map where US cities are shaded based on a count field. The data is very simple, consisiting of ZIP code and Count. I have successfully imported data using a .CSV file and UDL (SQL Server View).

    I can execute "DisplayDataMap()" using the imported data and can create shaded area maps of the following geographic areas: US State [geoShowByRegion1], US County [geoShowByRegion2] and US ZIP [geoShowByPostal1]. Everything is great until I change the DisplayDataMap to use geoShowByCity. Then I receive the error: "Cannot map data because the selected geography type is invalid."

    So I tried to do the same thing through the MapPoint UI itself. When I import the data by ZIP, there is no option to shade by city.

    Am I doing something wrong or does MapPoint (2004 or 2006) not have the capability to create a shaded area map by city?

    Thanks

  2. #2
    Paul Larson is offline Senior Member Green Belt
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    Sep 2005
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    Battle Creek, Michigan
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    Re: Shaded Area Map by City using ZIP code as input

    The good news - You're not doing anything "wrong"
    The bad news - Mappoint does not define cartographic boundaries for city-level mapping. Nor does it define any relation between cities and zipcodes. It only has "pinpoint" location data for cities.

    You could conceivably obtain a list of zipcodes mapped to city, and then shade based on zipcode and get the results you're after by aggregating zipcodes to city and vice-versa.

    HTH
    Paul

  3. #3
    kdulaney is offline Junior Member White Belt
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    Jan 2005
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    8

    Re: Shaded Area Map by City using ZIP code as input

    I will stop pulling my hair out now. We have cartographic boundaries for ZIPs which we use in Google maps - we will have to find them for cities for MapPoint now.

    Thank you very much, Paul. I really appreciate your help.

    Kevin

  4. #4
    Paul Larson is offline Senior Member Green Belt
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    Sep 2005
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    Battle Creek, Michigan
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    136

    Re: Shaded Area Map by City using ZIP code as input

    You might try delving into census tract boundaries, which are usually somewhat equivalent to "populated places." Luckily, mappoint recognizes census tracts as both pinpoint- and boundary-level objects. In fact, someone may have already compiled a lookup list for this relation.

    -Paul

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