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@vpipkt vpipkt commented Apr 29, 2020

Currently a work in progress. Most of the locations we are getting by geocoding addresses are several kilometers away from the stated coordinate.

So far I have used Mapbox thru the python geocoder package. Because it is free to get an API key and I think it's free to do some small number of requests.

@vpipkt vpipkt marked this pull request as draft April 29, 2020 21:04
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vpipkt commented May 1, 2020

There is a master address list on the City open data portal that has coordinates. This may have a good first bet for address matching.

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vpipkt commented May 1, 2020

Other thoughts:

  • zip code could help/hurt. Obv not perfect, would need to clean them. However may help in cases earlier in the history where fire responses could be throughout albemarle county
  • voting of several geocoding services could be very helpful
  • Va state plane coordinates projection is the standard for the charlottesville GIS.

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vpipkt commented May 1, 2020

These are the "best" matches in terms of distance

image

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vpipkt commented May 4, 2020

  • Va state plane coordinates projection is the standard for the charlottesville GIS.

Doug Caldwell gives us the specifics: https://codeforcville.slack.com/archives/C011UU9654N/p1588373135001300

This is EPSG:2284.

https://spatialreference.org/ref/epsg/nad83-virginia-south-ftus/

https://trello.com/c/LikXTlwm/12-projection-used-by-city-of-charlottesville

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