[OSM-talk] Suggestion more complete mapping verifactiion

[Thomas Wood]

On 9/17/07, John Baker <rovastar at gmail.com> wrote:
> Thanks Dave for the useful reply - so many are not. That explains a little
> more.
>
> I was a little presumptuous that his information was available. But also, to
> be honest, I am surprised that people involved in heavily mapping (like many
> here) do not have street info like this - even if they cannot/do not use it
> for this project.
>
> Yes I understand the potential problems with this data online and stated
> that before.
>
> Anyway here are a few scenarios for you:
>
> a) You can still lookup the street data though with the RM or OS etc
> programs that is what they are for. If I got an "official" street name
> source from RM, etc and made a list myself, looked those up in the AtoZ and
> and walked around myself. Would it be ok to put this data in OpenStreetMap?

I personally cross off streets in an A-Z whilst mapping to ensure I
don't miss anything. It's more of an assistance to plan an efficient
route around the roads, though.
>
> b) At a mapping party (or follow up mapping parties when it is nearly
> complete), etc. someone hands people a list of a few names of streets that
> they might want to check out that might have been missed so they can lookup
> in their AtoZ. Would the data collected be ok to be put in OSM?
>
> c) If someone posted a link to this newsgroup to a webpage with possible
> "Easter Eggs in RM street data in Cambridge", etc and people went out and
> checked this and realised that some of these streets were not in OSM
> database. Would it be ok to add them? Maybe with links to multmap,
> streetmap, etc (2 different data sources) of the roads.
>
> d) If someone posts to say Heddon Street in London W1 is not in the database
> here is a link:
> http://www.streetmap.co.uk/newmap.srf?x=529233&y=180753&z=1&sv=heddon+street&st=1&tl=Heddon+Street,+W1&searchp=newsearch.srf&mapp=newmap.srf
> Is it then OK for someone to walk down Heddon Street with a GPS and map this
> road in OSM?

Usually, tracing the way into OSM from the Yahoo imagery will be
possible in London, leaving it unnamed, or named as FIXME may be
suitable since future editors of the map will come across it
(hopefully maplint or the validator plugin would flag it up to them to
review).

>
> I wonder what you think of these?
>
> I don't want to auto-correct the streets or copy from multimap or something
> that some here seem to think. Just to go out and manually check them.

I can see where you're coming from when compiling a list to check
manually, I would not want to auto-generate such a list due to the
possibility of tainting data.
In locations where there is adequate satellite imagery, that is a
safer way of confirming an area is complete as far as name-copying is
concerned.

>
> Obviously some can be paranoid with the legal stuff (and it is easy to do
> so) and on the same level of legal paranoia you probably shouldn't use paper
> based maps for planning mapping parties but I imagine you do. Obviously
> caution is needed I am not arguing otherwise.
>
> Legal areas are complex but there seems to be a load of leeway here IMHO.
>
> 17/09/2007, Dave Stubbs <osm.list at randomjunk.co.uk > wrote:
>
> > On 17/09/2007, John Baker < rovastar at gmail.com> wrote:
> >
> > >
> > >
> > > ---------- Forwarded message ----------
> > > From: John Baker < rovastar at gmail.com>
> > > Date: 17 Sep 2007 13:10
> > > Subject: Re: [OSM-talk] Suggestion more complete mapping verifactiion
> > > To: Steve Coast <steve at asklater.com >
> > >
> > > I still don't see anything illegal with what I am propsing it is a
> totally different case to the 192 one. However maybe a little more caution
> with posting results online. Maybe there is another database resource then
> that has offical street names in it.
> >
> >
> >
> > From what I can see of your idea, it would basically require posting the
> list of streets that were missing along with their rough location. You could
> make this list and then not do anything with it, but that wouldn't really
> help as none of the mappers would know what was on it and that there was a
> street near them missing. I'm guessing the RM would object to this list
> being posted :-(
> > I think that if this comprehensive datasource existed, someone would have
> replied by now, which means that it probably doesn't exist.
> >
> > Unfortunately the most complete free datasource for London street names
> that I know of is Open Street Map.
> >
> >
> >
> > > Anyway I am not going to make up a whole site for this and come cap in
> hand to you after a year.
> > >
> > > I offered help and a solution to what I see is as a large problem with
> this project.
> > >
> > > You give me the list of "official" street names in a given area and I
> will do the rest. And the only advice is you need to do more work yourself
> before you can help us out.
> >
> >
> >
> > I think you're asking for something we don't have. And you're suggesting a
> source that will probably have licensing issues.
> >
> >
> >
> > > If you do not have all the streets in you map project how can you ever
> hope of it being the success you guys want. Once you start having cities
> that have all the streets in *then* it can become popular. But I cannot see
> how I/anyone can use/recommend using this project as we never know when a
> city has a complete listing of streets. I would have thought you would have
> wanted a more complete city but apparently many here do not.
> >
> >
> >
> > We want a complete city, country, world. We're not entirely doing this for
> fun you know... there is a problem that this kind of data isn't freely
> available. That's part of what OSM is trying to put right.
> >
> >
> >
> >
> >
> >
>
>
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>
>


-- 
Regards,
Thomas Wood
(Edgemaster)