All,
Ian is right. Neighborhood boundaries change over time and new neighborhood definitions emerge as well. Trying to define neighborhoods based on the inhabitants perception of boundaries is like trying to coral an amoeba. It is interesting sociology, but it raises the question of how you update your definitions. Maybe a scheme to let people vote on their neighborhood boundaries and average them or display them in real time. _____ From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Ian White Sent: Sunday, September 16, 2007 1:09 PM To: [email protected] Subject: Re: [Geowanking] neighborhood database? I'm not trying to be commercially-oriented here, just helpful... UMI saw this problem and built a database of informal space (which includes neighborhoods). We have 20k+ in the US and also other parts of the world... 'Wankers might be interested to look at our services demo: ws.urbanmapping.com (thank you very much Andrew Turner!). Yes, it's a commercial endeavor. Census tried to create a framework to allow municpalities to define block groups around neighborhoods, but it didn't gain much traction and died. Part of the problem is that neighborhoods are (generally) not administratively defined. The boundaries of "Midtown, NYC?" Your guess is (almost) as good as mine--we've licensed it to all portals, so our definition is more broadly known. Because they are informally-defined, traditional notions of boundaries do not apply. Does SoHo have to be adjacent to NoHo? Why can't they overlap? That's how people think about space, so it follows that you can be in multiple 'hoods at the same time. It gets messy to create a uniform definition around something that isn't fact-based, so I don't think it's well-suited to an open project (or should I say crowdsourcing??). The question also touches on a hot-button issue of mine-- the city of Seattle selling spatial data--they've collected it at taxpayer expense, so cost recovery is the most they should be charging, but that's not the case some of the time. It's even worse with parcel data. The security/public safety argument usually inserts itself here, but as many state courts have ruled, it's hollow as a rotted birch tree. As an aside, the Seattle data Raj mentions might seem 'official,' but it doesn't really matter--what people perceive as being valuable does. On 9/16/07, Raj Singh <[EMAIL PROTECTED]> wrote: Looks like for Seattle you can get neighborhoods from the library: http://www5.metrokc.gov/sdc/FGDCDocs/NEIGHBORHOOD_fgdc.htm or the city for $125: http://www.seattle.gov/GIS/docs/datacds.htm In my 10+ years in the urban planning field, I've never come across a national database of neighborhoods. Yes, in some towns neighborhoods coincide with wards or census boundaries, but not always. I'd be very interested in helping out in an effort to develop an open neighborhood database repository if I had some help. --- Raj On Sep 15, 2007, at 3:21 PM, Anselm Hook wrote: > Is there a free database of American neighborhood names and polygonal > boundaries. > > To elaborate: > > For example San Francisco has neighborhoods like 'SOMA' or 'chinatown' > or 'mission'. > > My current need is a neighborhood database for Seattle, of which one > appears here: > > http://en.wikipedia.org/wiki/Seattle_neighborhoods > > It seems like there may be data behind this - I am about to check if > this is just from some publically available census data like census > 2000. > > Also, > > http://clerk.ci.seattle.wa.us/~public/nmaps/fullcit2.htm > > And > > http://transit.metrokc.gov/tops/bus/neighborhoods/region_text.html > > But generally speaking is there something comprehensive for the entire > United States? > > - a > _______________________________________________ > Geowanking mailing list > [email protected] > http://lists.burri.to/mailman/listinfo/geowanking _______________________________________________ Geowanking mailing list [email protected] http://lists.burri.to/mailman/listinfo/geowanking -- Ian White :: Urban Mapping, Inc. 690 Fifth Street Suite 200 :: San Francisco CA 94107 T.415.946.8170 :: F.866.385.8266 :: urbanmapping.com
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