[OSM-talk-be] Unamapped ... errrrrr Sparsely mapped places :)

[Sander Deryckere]

I agree with Ben. One place I know to be sparsely mapped is Koksijde
(almost no streets have names). But it isn't found by the tool.

Maybe some other algorithm can be proposed. I'm thinking that the number of
nodes generated can mostly be done with areal mapping, but for precise
tags, you need to be there. Well mapped streets have a highway type, a
name, a speed and possibly other attributes, while areal mapped streets
usually just have a type.

You may also find a lot of buildings around those places, but those
buidlings won't have housenumbers or street names.

So maybe you can divide the number of nodes in an area by the number of
tags in a that area found on the objects, and see the result. A high result
means it's aerial mapped, a low result means it's ground mapped.

So you immediately know where it would be best to organise the mapping
party.

2012/10/18 Ben Laenen <benlaenen at gmail.com>

> On Thursday 18 October 2012 07:51:01 Nicolas Pettiaux wrote:
> > Thanks Brice,
> >
> > Very interesting. With only 17 places left, we can tackle the work more
> > precisely.
> >
> > Wouldn't it be interesting to organize a mapping party in one of these
> > locations, after preparation and contact with local people, perhaps the
> > tourist authorities, to let them know that, with their help, we plan to
> > come and map better their locality ?
>
> If you look at the places that are sparsely mapped, I don't think it's
> really
> any use to have mapping parties at those exact locations.
>
> Langemark-Poelkapelle for example is just a result of our fused
> municipalities, the place node has to be somewhere in the middle of nowhere
> between Langemark en Poelkapelle (which are both properly mapped)
>
> http://bmaron.net/osm_stats/unmapped/?zoom=15&lat=50.91117&lon=2.93411&layers=B0TT
>
> The same with Meeuwen-Gruitrode:
>
> http://bmaron.net/osm_stats/unmapped/?zoom=15&lat=51.09158&lon=5.55373&layers=B0TT
>
> Paulatem, a village with a population of 140, not many streets are missing
> there then...
>
> http://bmaron.net/osm_stats/unmapped/?zoom=16&lat=50.8958&lon=3.71461&layers=B0TT
>
> Roborst and Sint-Blasius-Boekel: both tiny places, but all their streets
> are
> mapped
>
> http://bmaron.net/osm_stats/unmapped/?zoom=15&lat=50.86228&lon=3.75367&layers=B0TT
>
> http://bmaron.net/osm_stats/unmapped/?zoom=15&lat=50.84965&lon=3.7208&layers=B0TT
>
> Oosterzele: because it also merged with other municipalities, Oosterzele
> has
> over 10000 inhabitants and thus the place node becomes "town", but the
> village
> itself is much smaller, and all streets are there:
>
> http://bmaron.net/osm_stats/unmapped/?zoom=14&lat=50.94527&lon=3.80038&layers=B0TT
>
> And so on... So I think it's basically hitting the limits of the algorithm
> that decides which are the unmapped or sparsely mapped places, rather than
> telling us which places are really sparsely mapped.
>
>
> > THis could be one opportunity
> >
> > 1/ to meet (at least the one who want, like me, to put a face on a name
> > often read), especially when working on finalizing an OSM-BE association,
> > 2/ to involve some people who are NOT yet mappers and let them know what
> we
> > do and why, and appreciate the result afterwards, maybe let the use it
> for
> > their internal or external promotion,  for example using
> > http://maposmatic.org/ that we could show also and use to leave them
> with
> > the tools to make their own local maps,
> > 3/ to attract the press and further support
> >
> > What do you think ?
>
> Mapping parties can be done of course, but I think there are better options
> than the sparsely mapped places. "Unfortunately" by now most places are
> mapped
> (nothing beats the joy of starting to map somewhere which is barely mapped
> --
> e.g. the Hoboken/Turnhout/Deinze mapping parties long ago), but there are
> still quite a few places that needs to be cleaned up (bad or missing street
> names, missing oneways etc.). But I don't have any suggestions on where to
> start with that for now.
>
> Greetings
> Ben
>
>
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