[Tagging] The OSM philosophy (was: Carriageway divider)
On 26 August 2012 10:42, Markus Lindholm markus.lindh...@gmail.com wrote: We're not supposed to map for the renderer nor the router. Exactly for whom are we to map? For nothing, and no one. Which also means: for anything, everything and all. The OSM approach - as I understand it - is to collect data about reality in best way possible, and let the use of that data come afterwards. Let the renderers, routers and whatnot determine how they can best utilize the data. The reasoning behind that is this: If we map focusing on one single case, or even multiple cases, we set ourselves up for bad data that just happens to produce the right result in the case we're looking at. This easily leads to the data becoming unusable for anything else. If we instead map for no particular case, just trying to model reality in best way possible, we might not see any end result immediately, but the data is left intact, in good quality for any emergent uses we're not even thinking about yet. I think it's a very, very good approach. Uses come and go, but the data is what matters, in the end. It's the data itself, the modelling of reality, we need to focus on. -- - Ilari Kajaste - E-Mail: ilari.kaja...@iki.fi WWW: http://iki.fi/ilari.kajaste ___ Tagging mailing list Tagging@openstreetmap.org http://lists.openstreetmap.org/listinfo/tagging
Re: [Tagging] The OSM philosophy (was: Carriageway divider)
This not tagging for renderer is quite misleading. I would always agree that mapping incorrectly for any reason is wrong. But if the mapping is accurate I do not mind that it is for renderer. After all these discussions do not show any globally acknowledged way of modelling reality and renderers/routers seem to be a natural point of unification (There are not many features rendered by the main Mapnik style that are not widely mapped...). LM_1 2012/8/26 Ilari Kajaste ilari.kaja...@iki.fi: On 26 August 2012 10:42, Markus Lindholm markus.lindh...@gmail.com wrote: We're not supposed to map for the renderer nor the router. Exactly for whom are we to map? For nothing, and no one. Which also means: for anything, everything and all. The OSM approach - as I understand it - is to collect data about reality in best way possible, and let the use of that data come afterwards. Let the renderers, routers and whatnot determine how they can best utilize the data. The reasoning behind that is this: If we map focusing on one single case, or even multiple cases, we set ourselves up for bad data that just happens to produce the right result in the case we're looking at. This easily leads to the data becoming unusable for anything else. If we instead map for no particular case, just trying to model reality in best way possible, we might not see any end result immediately, but the data is left intact, in good quality for any emergent uses we're not even thinking about yet. I think it's a very, very good approach. Uses come and go, but the data is what matters, in the end. It's the data itself, the modelling of reality, we need to focus on. -- - Ilari Kajaste - E-Mail: ilari.kaja...@iki.fi WWW: http://iki.fi/ilari.kajaste ___ Tagging mailing list Tagging@openstreetmap.org http://lists.openstreetmap.org/listinfo/tagging ___ Tagging mailing list Tagging@openstreetmap.org http://lists.openstreetmap.org/listinfo/tagging
