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 ) - 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 or 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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