Re: [Talk-us] Finding new roads
On Sun, Feb 5, 2012 at 2:54 PM, Josh Doe wrote: > I've been meaning to do some buffer analysis in my county to find > roads that are missing or grossly misplaced [0]. Doing it for a county > or for the whole US isn't that much different aside from computation > time and disk usage. Of course this doesn't catch name or > classification differences, but it would be a help. RoadMatcher and OpenJUMP were used for this parts of the geobase import in Canada. ___ Talk-us mailing list Talk-us@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-us
Re: [Talk-us] Finding new roads
On Mon, Jan 16, 2012 at 7:48 PM, Nick Hocking wrote: > I believe that OSm's most usefull attribute is to be up to date. > > The only real way to do this is with a local mapper but bringing > the USA up to Tiger 2011 up-to-datedness would be a great start. > > > Are there tools to > > 1. Compare named OSM roads with Tiger 2011 roads and highlight > just the new ones. > > 2.Compare Bing imagery with Tiger 2011 and highlight any > apparent sealed roads that do not have Tiger 2011 ways. > > Roads currently traced but not named can already be targeted > well using OSMI highways facility and could be fixed first. I've been meaning to do some buffer analysis in my county to find roads that are missing or grossly misplaced [0]. Doing it for a county or for the whole US isn't that much different aside from computation time and disk usage. Of course this doesn't catch name or classification differences, but it would be a help. -Josh [0]: http://wiki.openstreetmap.org/wiki/BMO#Differential_import ___ Talk-us mailing list Talk-us@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-us
Re: [Talk-us] Finding new roads
I know one county (at least) in PA could use a refresh of Tiger data from the 2011 set. It's Crawford County. I've noticed SEVERAL roads are missing in that county that either didn't get uploaded in the original Tiger imports, or were deleted after the imports and I just can't find the changesets to restore them from. Either way, that county is in bad shape in several areas. While doing license change cleanup work, I've done my best to add back in several of those roads via the Tiger 2011 imagery layer (to get the names) and Bing/NAIP imagery, but one person can only do so much. -- James ___ Talk-us mailing list Talk-us@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-us
Re: [Talk-us] Finding new roads
On Sat, Feb 04, 2012 at 05:07:38PM -0500, Nathan Edgars II wrote: > On 1/16/2012 7:48 PM, Nick Hocking wrote: > >I believe that OSm's most usefull attribute is to be up to date. > > > >The only real way to do this is with a local mapper but bringing > >the USA up to Tiger 2011 up-to-datedness would be a great start. > > I've recently been using another way of finding new roads: > subdivision plats. If your county has recent public records online, > simply go through the recent ones and find any with new roads. The > plats also give names (except sometimes in the case of an apartment > complex, where it's all private property). I've been using these for a while as well, but watch out for: 1. Roads whose names were changed by local ordinance after platting, frequently to honor some politician. 2. Roads that are platted, but never built because the money runs out. 3. Roads that are built, but later abandoned. We have a lot of these along the Fox River NW of Chicago where old subdivisions were built in floodplains and were later bought up and bulldozed by one gov't agency or another. 2 and 3 are easily solved by cross-referencing with satellite imagery, but 1 can be tricky. This is where TIGER 2011 can come in handy. Kane County, IL actually has subdivision plats all the way back to the 1850s online, which can be pretty cool to look at in their own right. -- Kristian M Zoerhoff pgptOOXiNtcmN.pgp Description: PGP signature ___ Talk-us mailing list Talk-us@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-us
Re: [Talk-us] Finding new roads
On 1/16/2012 7:48 PM, Nick Hocking wrote: I believe that OSm's most usefull attribute is to be up to date. The only real way to do this is with a local mapper but bringing the USA up to Tiger 2011 up-to-datedness would be a great start. I've recently been using another way of finding new roads: subdivision plats. If your county has recent public records online, simply go through the recent ones and find any with new roads. The plats also give names (except sometimes in the case of an apartment complex, where it's all private property). ___ Talk-us mailing list Talk-us@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-us
Re: [Talk-us] Finding new roads
On 1/22/2012 4:06 PM, Bryce2 Nesbitt wrote: And here is where the rusty old TIGER data still has something to offer OSM: address data. A very common map use case is "show me a map around this address". Bringing in that data from TIGER might not bring any more /mappers/, but it could bring a lot of /viewers/. TIGER's address ranges are obfuscated by law for privacy reasons. The typical resolution is only to within the nearest block. Anyone who needs to geolocate an address is still free to fall back to the TIGER address ranges using a secondary data source if the address is not in OSM's database. I believe this is already how Nominatim or one of its sources works. Another advantage of keeping the TIGER address ranges in a secondary database is that the information can be easily updated by replacing with new data rather than needing to conflate with existing OSM data. ___ Talk-us mailing list Talk-us@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-us
Re: [Talk-us] Finding new roads
On Tue, Jan 17, 2012 at 4:12 AM, Nick Hocking wrote:
> Toby wrote
>
> "Alternatively, we could grow the community and not have to rely on
> TIGER. This also seems hard though :("
>
> Yes that has always been the issue with TIGER imports,
> even the original one.
>
> At some stage we need to decide to be the best there is rather than
> "just as good as the last TIGER"
>
> We probably need two local mappers per million people just to
> keep the roads up to date.
>
Having a lot more OSM *viewers* would help to get there.
And here is where the rusty old TIGER data still has something to offer
OSM: address data.
A very common map use case is "show me a map around this address".
Bringing in that data from TIGER might not bring any more *mappers*, but
it could bring a lot of *viewers*.
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Re: [Talk-us] Finding new roads
Toby wrote
"Alternatively, we could grow the community and not have to rely on
TIGER. This also seems hard though :("
Yes that has always been the issue with TIGER imports,
even the original one.
At some stage we need to decide to be the best there is rather than
"just as good as the last TIGER"
We probably need two local mappers per million people just to
keep the roads up to date.
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Re: [Talk-us] Finding new roads
> From: Toby Murray [mailto:toby.mur...@gmail.com] > Subject: Re: [Talk-us] Finding new roads > > On Mon, Jan 16, 2012 at 6:48 PM, Nick Hocking > wrote: > > I believe that OSm's most usefull attribute is to be up to date. > > > > The only real way to do this is with a local mapper but bringing the > > USA up to Tiger 2011 up-to-datedness would be a great start. > > > > > > Are there tools to > > > > 1. Compare named OSM roads with Tiger 2011 roads and highlight just > > the new ones. > > I forget who originally posted this but the only thing along these lines > that I've seen before is to convert new TIGER data to .osm and then load > it up as a second layer in JOSM. Change the "inactive" color to > something bright and then load current OSM data on top as the active > layer. At an appropriate zoom level the bright colored, inactive > background layer with new data will only show where there is not any > existing OSM data to blot it out. Turning on wireframe mode will also help. Antialiasing can allow some of the background colour to be visible, but wireframe mode turns this off. ___ Talk-us mailing list Talk-us@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-us
Re: [Talk-us] Finding new roads
On Mon, Jan 16, 2012 at 6:48 PM, Nick Hocking wrote: > I believe that OSm's most usefull attribute is to be up to date. > > The only real way to do this is with a local mapper but bringing > the USA up to Tiger 2011 up-to-datedness would be a great start. > > > Are there tools to > > 1. Compare named OSM roads with Tiger 2011 roads and highlight > just the new ones. I forget who originally posted this but the only thing along these lines that I've seen before is to convert new TIGER data to .osm and then load it up as a second layer in JOSM. Change the "inactive" color to something bright and then load current OSM data on top as the active layer. At an appropriate zoom level the bright colored, inactive background layer with new data will only show where there is not any existing OSM data to blot it out. But that is kind of cumbersome and will only work for relatively small areas. An ideal solution would be to come up with tiles that only render data from TIGER 2011 that doesn't already exist in OSM and then have a tool to facilitate importing missing areas. But that doesn't exactly strike me as easy. Alternatively, we could grow the community and not have to rely on TIGER. This also seems hard though :( Toby Toby ___ Talk-us mailing list Talk-us@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-us
[Talk-us] Finding new roads
I believe that OSm's most usefull attribute is to be up to date. The only real way to do this is with a local mapper but bringing the USA up to Tiger 2011 up-to-datedness would be a great start. Are there tools to 1. Compare named OSM roads with Tiger 2011 roads and highlight just the new ones. 2.Compare Bing imagery with Tiger 2011 and highlight any apparent sealed roads that do not have Tiger 2011 ways. Roads currently traced but not named can already be targeted well using OSMI highways facility and could be fixed first. Nick ___ Talk-us mailing list Talk-us@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-us
