Hello,
John makes some excellent points. The key to making this
work would be to prioritize it. Otherwise, it's a neverending Remap-a-Tron.
I don't have any strong feelings about how that should be
done. I'm sure someone will come up with an excellent way to do that.
Charlotte.
At 02:33 PM 9/29/2012, you wrote:
Statements that we should fix all the unedited TIGER data express a
Great Idea. They are, however, rather ambitious statements, and
will require more than a few weeks to completely realize. As such,
cleaning up US TIGER data is a Long Term goal, and does not say
anything regarding how we might prioritize and coordinate work to
realize this goal.
Given the size of the effort, it's crucial that work is organized in
smaller, more bite-sized pieces, so that we can all celebrate the
completion every few weeks of a portion of the work.
Here are some suggestions:
Order US counties by population, largest first, review primary,
secondary and tertiary ways (NE2 and other have been systematically
reviewing interstates and other number routes over the last few
months), compare with TIGER 2012, correct way attributes, and
register road geometry to aerial photography
or
Order US counties by population, largest first, and review all ways
(in way class order) that have not been edited in the last six
months, compare with TIGER 2012, correct way attributes, and
register road geometry to aerial photography
or ....
I will also point out that the connectivity errors I mentioned
earlier are, in fact, largely a result of unedited TIGER data (see
<http://wiki.openstreetmap.org/wiki/TIGER_fixup>http://wiki.openstreetmap.org/wiki/TIGER_fixup,
for example) and do present a well defined subset of issues to focus
upon. A secondary, and perhaps less obvious, benefit of addressing
road network connectivity issues is the significant increase in
quality of routes generated by tools such as OSRM
(<http://project-osrm.org/>http://project-osrm.org/). There exists
significant interest on OSM as a data source for routing and
navigation applications
(<http://www.slideshare.net/dnesbitt61/sotm-us-routing>http://www.slideshare.net/dnesbitt61/sotm-us-routing,
and others), and showing progress in this area could be a large
boost to the rate of OSM adoption.
In any case, it's important to come to agreement on a set of
constrained, well defined short term goals that demonstrate steady
progress to help keep everyone engaged and motivated.
Best,
On Sat, Sep 29, 2012 at 10:05 AM, Charlotte Wolter
<<mailto:[email protected]>[email protected]> wrote:
I also think it would be great, if we could focus on
unedited TIGER. That would clean up the map a lot. There may be
some technical challenges, but overal it would be a good thing.
I know someone suggested roads without a name, though I
think there was discussion that would be technically difficult and
also might produce a lot of focus on country roads and tracks that
never have had a name. However, if we limit it to roads changed by
the redaction, that might be one way to restore the names from
TIGER that were lost.
Some things I would like to see in the future include
editing all the national parks. I know that there is data on their
Web sites, which, I think, is all public domain. That would be a
good thing to do.
Best,
Charlotte
At 12:40 AM 9/29/2012, you wrote:
I think the most necessary cleanup to the USA OSM data is to clean
up all the crazy unedited original Tiger roads.
These can easily be identified simply as those ways that have a
name but are still the original Tiger data and have not been
edited. (except for the balrog-kun bot). You could just identify
spots not closer together than (say) 1 mile and that would allow
the editor to have a nice piece of real estate to clean up each time.
It is quite fun doing this since (with the help of TIGER 2012)
overlay and Bing imagery, it is usually possible to determine which
road goes where and you see an enormous improvement in the map for
relatively small efforts.
If the remap-a-tron identifies an area where all the original;
TIGER data was correct, then no problems, we just flag it as good
and move on, but at least that area has now been eyeballed by a
real person who probably will be able to add in a few new TIGER
2012 roads if they have the overlay active.
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Charlotte Wolter
927 18th Street Suite A
Santa Monica, California
90403
<tel:%2B1-310-597-4040>+1-310-597-4040
<mailto:[email protected]>[email protected]
Skype: thetechlady
The Four Internet Freedoms
Freedom to visit any site on the Internet
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Freedom to attach any device that does not interfere with the network
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would affect the first three freedoms.
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John Novak
585-OLD-TOPOS (585-653-8676)
Charlotte Wolter
927 18th Street Suite A
Santa Monica, California
90403
+1-310-597-4040
[email protected]
Skype: thetechlady
The Four Internet Freedoms
Freedom to visit any site on the Internet
Freedom to access any content or service that is not illegal
Freedom to attach any device that does not interfere with the network
Freedom to know all the terms of a service, particularly any that
would affect the first three freedoms.
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