[talk-latam] paved/unpaved roads

Wille wille at wille.blog.br
Mon Dec 15 01:26:15 UTC 2014

Hola, joost

En la comunidad Brasileña ya tuvimos muchas discusiones sobre la 
clasificación de carreteras y calles. Llegamos en una definición que es 
muy buena para vías rurales, pero, en mi opinión, no es todavía muy 
clara para las vías urbanas (los principales conflictos son entre calles 
residenciales y terciarias):


Hay también un flowchart bastante complejo: 

El problema que veo con la propuesta de clasificación de acuerdo con la 
importancia da la vía es que en comunidades con muchos colaboradores 
puede generar muchos conflictos, pues la importancia de una vía no es 
una definición objetiva. Pero si ya está siendo utilizada en África, no 
soy contra que sea utilizada en países con pocos colaboradores y con una 
infraestructura de carreteras poco jerarquizada y definida.

hasta luego,

On 14-12-2014 19:01, joost schouppe wrote:
> Hello Latin America,
> There were a lot of reactions to my earlier post about mapping the 
> quality of roads in Latin America. I hoped we could talk about this at 
> SOTM, but that didn't happen. So here I'd like to revive the 
> discussion. I learned a lot since then, mostly thanks to Marco 
> Antonio. Estoy escribiendo en inglés como parece más fácil para los 
> brasileños. Puedo traducir si le hace falta a alguien.
> What I'd like us to do now:
> - As a Latin community we keep mapping surface and show off the 
> progress we make. I'll try to make some statistics about the progess 
> we make (and publish them on global.swing.eu <http://global.swing.eu> )
> - As a Latin community we try to get surface included in the standard 
> mapnik map. I made a simple 
> mock-up:https://github.com/gravitystorm/openstreetmap-carto/issues/110#issuecomment-66274450. 
> From the reactions, it seems that they will only consider a proposal 
> which is already almost ready for inclusion in the main code. So that 
> means we have to get a Tilemill running and play around with the 
> stylesheet ourselves. I've got the History Renderer installed, and 
> I'll try to play a bit with the xml stylesheet that uses... We would 
> have to work out most of the details, and maybe even make changes to 
> the style of tunnels or planned roads. If this proposal is rejected 
> (which I have a feeling is quite possible), we might have to start 
> playing it politically. Maybe trying to get Mapbox and HOT involved.
> Anyone have some experience with Tilemill? Or another tool to make 
> nice mockups with OSM data, based on standard Mapnik style?
> In the longer term:
> - Develop an Afro-Latin tagging scheme. Now there are many different 
> national interpretations of road tagging. That's not a good idea, as a 
> lot of our data users are international. The African tagging scheme is 
> good and simple: basically a road is classified higher if it is more 
> important. Quality of the road does not count. So a terrible dirt road 
> is still primary if it is the only connection between major cities. 
> But this tagging scheme does not use the trunk road classification. My 
> proposal would be to use this trunk road tag, but only for the most 
> important roads that are not freeways, that are paved and that are at 
> least two lanes wide. With this slight adaptation, I think we could 
> happily map Latin America. And it would stick very close to current 
> practice and the African practice, making it easy to have a common 
> Afro-Latino scheme. In turn, that should make it easier to push for 
> changes relevant to our community. Anyway, most people seem to agree 
> that the only valid reason to map a road in a higher classification is 
> that the road is more important (see eg 
> http://www.openstreetmap.org/user/Mark%20Newnham/diary/20736).
> - Even if after over six years, we do manage to get mapnik to show 
> road quality, I still see a use for a Latin mapview. I think the Mapa 
> Ecologico is a great example. Here rivers and roads get mapped much 
> more prominently at higher zoom levels, which for the much less 
> populated continent makes a lot of sense. I talked to Linhares and he 
> would like to share his stylesheet. How about we make a Latin OSM 
> portal with our own map style and maybe even a more pronouncable name, 
> like www.MapaMundiAbierto.org <http://www.MapaMundiAbierto.org> or 
> www.OtroServiciodeMapas.org <http://www.OtroServiciodeMapas.org>? That 
> would allow us to highlight things which are more important in this 
> part of the world. After a presentation in Bolivia, I got the idea 
> that they really did get the point when someone asked if we could make 
> a mapa de las fiestas! Why not : )
> So, who wants in?
> Joost
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