Geocoding

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  • 1.  How ZIPCODES contributed to the Flint, MI contaminated water issue

    Employee
    Posted 08-03-2017 16:30

    These 2 web articles explain how the choice of geographies (ZIPCODES) to analyze for the Flint, MI contaminated water problem exacerbated the problem and emphasizes the importance of choosing the correct geographies for analysis:

    https://www.gislounge.com/quirky-geography-zip-codes-obscured-flints-lead-problem/

    http://theconversation.com/how-zip-codes-nearly-masked-the-lead-problem-in-flint-65626



  • 2.  RE: How ZIPCODES contributed to the Flint, MI contaminated water issue

    Posted 08-03-2017 12:57

    That is a very interesting article on where it shows the misalignment between Flint zipcodes and city of Flint



  • 3.  RE: How ZIPCODES contributed to the Flint, MI contaminated water issue

    Employee
    Posted 08-09-2017 02:57

    Interesting article!

    It reminded me of an article I read some years back on on IP Address Locators. If this locator wasn't able to find a decent match, it used the country but only took the centroid from the country polygon. Unfortunately, there was a house located at that possition. So the people living there got a lot of beating for beeing internet hackers - and all just because the locator returned the centroid of the USA and not the entire boundary. I can't recall it it actually also returned a result code determining the precision of the resulting geocode.



  • 4.  RE: How ZIPCODES contributed to the Flint, MI contaminated water issue

    Employee
    Posted 09-13-2017 13:16

    Good article. Shows quite well how just displaying the results visually on a map would have told the State employees running the data queries that something wasn't matching up.