Thank you for your interest in SFGIS. Jeff asked me to respond
to your inquiry.
I took a look at your Web site, and it looks like a good
resource for the bicycling community here in town. Nice work!
Before I answer your specific questions, I want to review one
of the functions of the SF Enterprise GIS Program (SFGIS),
which is to collect and distribute enterprise spatial data
sets. These data sets typically come from the City's
departments or commercial sources (we buy them), and they are
consumed by the City's departments, partners, and the public
We are in the middle of updating our data collection processes
and migrating our distribution platform to a more robust
architecture. What that means is that we are not in a great
position to attend to individual requests for data until these
changes have been put in place, unfortunately.
As for your specific questions:
- Is the city (sfgov or otherwise) planning to publish updated
[bike network] datasets in light of this?
SFGIS: These data were created and are maintained by the
Department of Parking and Traffic. At this time, we
don't know their plans for updating them, but they
will probably notify us when any new data become
- "... no public & up to date dataset available for street
orientations (which streets are 1-way & which direction). Is
this still the case? Is there an up-to-date source for this
data available elsewhere?
SFGIS: Yes, and not that I know of. What we have posted on
our Internet site is the latest and greatest, though I
admit that we aren't always on top of every data set
(see the comments above regarding the improvement of
I guess that it's always the case that there is a more
current revision of data "available elsewhere", but as
I noted earlier, SFGIS is just a clearinghouse for
these data sets, so their maintenance and release is
not usually under our control.
Keep in mind that any data that we post is almost
always obsolete within a short time, just because the
City's landscape is always changing. And it's not
uncommon for some data sets to be updated on an annual
basis, so that's another wrinkle in the picture.
- "...obtain the latest versions of: dpt_bike_network,
phys_contours, stclines_streets, stintersections,SFGIS: Always check our Internet data download page first.
It's possible that you could try to contact the
department that owns each of these data sets, but it
is almost a certainty that your ongoing data needs
will not be a priority for them.
- If the city is not planning to update these shapefiles but
equivalent or more recent data is available elsewhere, that
would be good to know as well.
SFGIS: Recall that these data sets are all stewarded by
different departments, to support their departmental
work. The fact that they may make these data
available outside of their department is a courtesy,
not a requirement. Within our current system, it is
very difficult to keep track of all of the data sets,
the plans for updates, and equivalent data sets.
Maintaining this information is currently beyond our
means, and one of the reasons why we are trying to
move away from it. As I mentioned earlier, we are not
in a great position to pursue the information that you
seek; that will have to fall out as a by-product of a
more capable system, which we are working hard to
My overall recommendation is to use the data whose availability
and update intervals satisfy the needs of your application, and
that may not be our data, at least in the short-term.
Don't get me wrong. We love what you're doing, and we have
great plans ourselves to provide enhanced data download
capabilities, data Web services, etc., it's just that SFGIS is
under-staffed, and under acute budgetary pressures, like the
rest of the City and other government organizations.
I wish that SFGIS could be more supportive of your requests at
this time. I wish you good luck with the development of your
application. Please feel free to check with us on our latest
capabilities, and let us know how you're doing.
Enterprise GIS Engineer
Telephone: (415) 581-4047
City and County of San Francisco
Department of Technology (DT)
Research and Development
SF Enterprise GIS Program
1 South Van Ness Avenue
Second Floor, Room 2448
San Francisco CA 94103-0948
Hours: Mon-Thu 8:30 AM - 6:30 PM PST, Fri 1:45 PM - 5:45 PM PST
-----Forwarded by Jeff Johnson/DTIS/SFGOV on 07/07/2009 08:30AM -----
From: Amar Pai <jcru...@gmail.com>
Date: 07/06/2009 08:55PM
Cc: sf-bike...@googlegroups.com, g...@sfgov.com
Subject: bike network shapefile on sfgov.org - update planned?
About a year and a half ago, you were kind enough to help me obtain WGS84
versions of some datasets from sfgov.org that I needed these for the
bicycle route planner I was developing. With your help I got all the
datasets I needed (bike network, street lines, intersections, contours,
1-way st orientations) and was able to create the bike planner:
Many people are using it every day, which is cool.
I've since open-sourced the project (
some other like-minded developers about future improvements. It was
pointed out that the city recently approved a plan to add many new bike
lanes to the current bike network. Is the city (sfgov or otherwise)
planning to publish updated datasets in light of this?
Also, last time I checked there was no public & up to date dataset
available for street orientations (which streets are 1-way & which
direction). Is this still the case? Is there an up-to-date source for
this data available elsewhere?
I would appreciate any information you can offer on where to obtain the
latest versions of:
dpt_bike_network, phys_contours, stclines_streets, stintersections ,
If the city is not planning to update these shapefiles but equivalent or
more recent data is available elsewhere, that would be good to know as
A couple sources I'm aware of are TIGER (
I checked these datasets had issues like bike network not being conflated
w/ road network, which made it difficult for me to proceed. I don't have
access to good GIS software unfortunately.
If those are the only option going forward then I'll dig into massaging the
datasets into something I can use.
thanks again for your help!