[Talk-us] Chicago Buildings Redux
ian.dees at gmail.com
Mon Mar 4 22:38:57 UTC 2013
On Mon, Mar 4, 2013 at 4:34 PM, Jason Remillard
<remillard.jason at gmail.com>wrote:
> Hi Ian,
> - The changeset source tag, shouldn't that be something like - City of
> Chicago, data set "blablabla". The github link will probably be dead
> in 5 years. You could use a website= tag on the change set for the
> github repo link.
source=* has always meant (to me at least) the actual URL or place you
obtained the data from -- similar to a citation in Wikipedia. I can add a
description mentioning the city of chicago datasets though.
> - The wiki says that you are planning on manually checking for
> overlaps with the existing buildings. If you have already done half of
> the city, then you are still going to need to check over 500,000
> buildings by hand. It seems like a lot! I am much to lazy for that. My
> code for MA is below, it does a check for existing building and looks
> for schools and airports that are not tagged correctly.
It's not that hard when there are no buildings in the area you're trying to
merge (the majority of the city). In the areas where there are buildings it
is time consuming but I'd rather it take time than do something automated.
> Its very cool that the building data already has the addresses!
Yep, this is the main reason I'm importing the data.
> On Mon, Mar 4, 2013 at 1:54 PM, Ian Dees <ian.dees at gmail.com> wrote:
> > Hi imports,
> > A couple weeks ago I sent this message about Chicago releasing some of
> > data with an MIT license. Now that it's out and I've had some time to
> > with it, I'd like to propose continuing the import of buildings in
> > As I mentioned, I already successfully imported roughly half the city's
> > buildings. Now that the dataset is licensed MIT, I would like to continue
> > from where I left off.
> > Please see the wiki page I built here:
> > http://wiki.openstreetmap.org/wiki/Chicago,_Illinois/Buildings_Import
> > The local community is still very interested in this import (in fact
> > bugged me about continuing it since I stopped last year at various
> > parties I've lead and Open Gov meetups), so I'm excited to get going
> > Please send any feedback you have as soon as possible so I can continue
> > import later this week.
> > Thanks!
> > Ian
> > On Wed, Feb 20, 2013 at 9:31 PM, Ian Dees <ian.dees at gmail.com> wrote:
> >> Hi imports,
> >> Earlier last year I downloaded the Chicago building footprints shapefile
> >>  from the Chicago data portal, chopped it into manageable bits and
> >> started importing it into OSM. Halfway through the process of merging
> >> uploading this data I read the data portal's license  closer,
> >> a clause that makes the datasets offered there incompatible with OSM.
> >> troublesome clause allows the City of Chicago to require removal of any
> >> data at any point in the future:
> >> "The City may require a user of this data to terminate any and all
> >> display, distribution or other use of any or all of the data provided at
> >> this website for any reason including, without limitation, violation of
> >> contributing data to this website."
> >> When I noticed this I immediately stopped uploading data and began a
> >> conversation with the city's data team to discuss ways OSM could move
> >> forward with using the datasets listed on the portal.
> >> After several months of phone calls, meetings, and waiting, I'm pleased
> >> announce that the City of Chicago has started to release some of its
> >> datasets under the MIT license on GitHub: .
> >> As a result of this new license, I will be able to continue importing
> >> excellent buildings and address data into OSM (more on that later) and
> >> businesses will be able to use this data in their apps and tools without
> >> worrying about an untested license.
> >> I'm pretty excited about this, as Chicago is seen as a leader in
> >> data and other OSM/Open Data folks can point to this as proof that open
> >> licensing is a very important part of open data.
> >> -Ian
> >> 
> >>  http://www.cityofchicago.org/city/en/narr/foia/data_disclaimer.html
> >>  https://github.com/chicago/
> > _______________________________________________
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