[Imports] NYC streets - was Re: NYC building and address import

Alex Barth alex at mapbox.com
Tue Sep 10 22:26:24 UTC 2013

Stopping the tangent, here's a new thread for the NYC streets guys :)

On Tue, Sep 10, 2013 at 11:12 PM, Vaidila Satvika <vaidila at gmail.com> wrote:

> Ian,
> The TileMill solution sounds good. Any way to set that up so that others
> can access that layer in JOSM to correct the OSM one-way street data?
> On Tue, Sep 10, 2013 at 5:51 PM, Ian Dees <ian.dees at gmail.com> wrote:
>> On Tue, Sep 10, 2013 at 4:45 PM, Vaidila Satvika <vaidila at gmail.com>wrote:
>>> That would take a very very long time. There are something like 65,000
>>> streets in NYC broken up into many more segments. Perhaps we could import
>>> just the one-way streets?
>> The problem is that there are already streets in OSM. Someone would have
>> to write code that matches the NYC data with the OSM data and applies the
>> oneway tag as needed. This is tricky, but it gets even trickier because the
>> line segments in the two datasets are of different lengths and may need to
>> be broken if an OSM way is longer than a NYC data road.
>> If you have the time and knowledge to write this code, lots of people
>> would be happy.
>> In the meantime, we had the same problem in Chicago. I used TileMill to
>> render a layer that showed arrows pointing in the direction of the oneway
>> streets, used it as an overlay in JOSM, and fixed the roads by hand. I got
>> the majority of the problems in a week or so and Chicago has more roads
>> than NYC.
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