[Talk-us] San Francisco Geodata

Apollinaris Schoell aschoell at gmail.com
Fri Aug 27 00:30:28 BST 2010

On Thu, Aug 26, 2010 at 1:15 PM, Gregory Arenius <gregory at arenius.com>wrote:

> San Francisco has a website at datasf.org that has a lot of good geodata
> on it.  The current licence isn't acceptable for using any of the data but
> they might be willing to give us permission to use it.
> Some of the datasets that I thought were interesting were city lots<http://gispub02.sfgov.org/website/sfshare/catalog/citylots.zip>,
> addresses<http://gispub02.sfgov.org/website/sfshare/catalog/sfaddresses.zip>,
> neighborhoods<http://gispub02.sfgov.org/website/sfshare/catalog/planning_neighborhoods_tiybi.zip>,
> landuse<http://gispub02.sfgov.org/website/sfshare/catalog/planning_landuse.zip>,
> public lands<http://gispub02.sfgov.org/website/sfshare/catalog/sflnds_public.zip>,
> street centerlines<http://gispub02.sfgov.org/website/sfshare/catalog/stclines.zip>,
> speed limits<http://gispub02.sfgov.org/website/sfshare/catalog/dpt_speedlimits.zip>and the bike
> network<http://gispub02.sfgov.org/website/sfshare/catalog/dpt_bike_network.zip>
> .
> We have good street data for San Francisco so the street centerline file
> would mostly be useful to check for errors and inform us about which streets
> really don't have a name.
could be converted to osm files and used as background layer in JOSM. Then
comparing visually with osm data is easy. I think openJump can also do some
comparison automatically but need to check

> We need addresses if we want to have usable data for routing programs.  The
> addresses file has them in point format.  The city lots file also has
> addresses or address ranges for each parcel.  Has anybody done imports of
> similar address data?  If so, did you keep it in a point format or convert
> it into the "parallel ways" format?  How did things turn out?  I would
> really like to put that address data into OSM if I can get permission from
> the city to use it for that purpose.
haven't done an import but some manual address data in my region. doing the
import is easy for point formats

> The speed limits would be useful for routing as well.
definitely great, needs matching with road network. some work to do ...

> Also, just to be clear, even if the city grants permission for us to use
> this data I certainly don't plan on just 'dumping' it into OSM.  We already
> have good data for San Francisco.  I'm more interested in using it to refine
> what we already have and plan on taking it slow and doing any imports the
> right way.
> I'd love to hear any thoughts or ideas or what other locals would like to
> see our map have.
> I'm probably going to be meeting with someone from the city next week to
> discuss the licence issue and ways we can collaborate.  Anything in
> particular you folks are interested in?
> Cheers,
> Greg
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