On Saturday 03 January 2015, Mateusz Konieczny wrote: > > What about small airport next to big one - how it should be guessed > who operates which runways? > As both are mapped as nodes it is necessary to guess.
Yes, this is somewhat complex but if performance is not an issue this is doable i think. If you assign each runway to the airport node closest to it this will be correct in the vast majority of cases. Also note if something goes wrong this is not a big deal - it would just result in slightly suboptimal labeling. And in difficult cases you could always resort to mapping with polygons which would resolve such ambiguities. > > It is possible that such query will be too expensive to run it as it > would degrade performance of > rendering server. Likely - mainly due to the fact that all this needs to be calculated on the fly and is not reused when needed again. In total analyzing 30k-40k airports would not be such a big deal. But doing this again for every zoom level and repeatedly near the metatile boundaries would hurt of course. -- Christoph Hormann http://www.imagico.de/ _______________________________________________ Tagging mailing list Tagging@openstreetmap.org https://lists.openstreetmap.org/listinfo/tagging
