Re: [Tagging] Accuracy of survey
According to http://www.dw.de/quake-shifted-japan-by-over-two-meters/a-14909967 it was 2,4 m. 2014-12-30 22:22 GMT+01:00 Rainer Fügenstein r...@oudeis.org: W Ultimate 'accuracy'? You do realise that the tectonic plates are moving? btw: as a result of the Mar.2011 earthquake, japan has moved by at least 5m. how did OSM react? ___ Tagging mailing list Tagging@openstreetmap.org https://lists.openstreetmap.org/listinfo/tagging ___ Tagging mailing list Tagging@openstreetmap.org https://lists.openstreetmap.org/listinfo/tagging
Re: [Tagging] question: best practices for micromapping ped areas and footpaths?
johnw jo...@mac.com writes: 1) there are large open concrete areas for pedestrians, but there are also covered walkways through them as well. http://www.openstreetmap.org/edit#map=19/36.38380/139.07281 I mapped the open sections as highway=pedestrian+area=yes, while I traced the covered walkways (that connect the bus shelters) and tagged it as building=roof highway=footway I'm not sure if I should just create single area of highway=pedestrian and put the building=roof over it or what. Also, the roof doesn't render as a building, but as a white pedestrian area. I think if it is tagged at building=roof, I should ask -carto to render it as a building, but it logically remains a footpath as well. Given that there are specific places intended for walking, I would create ways for them and tag those as highway=footway. Then an area for the roof, and another area for the entire pedestrian area. The point of having separate ways is twofold: there really are paths that are more important than the broad area renderers and navigation programs that don't cope with areas will route people along the paths. Which even if there is an area, will seem natural to the people (Arguably, translating OSM to devices that lack concepts of routable areas should add implicit paths from every area/way junction to every other.) pgplOnOISw1lK.pgp Description: PGP signature ___ Tagging mailing list Tagging@openstreetmap.org https://lists.openstreetmap.org/listinfo/tagging
Re: [Tagging] correct access tagging for tourist attraction
johnw jo...@mac.com writes: perhaps use the =destination tag instead of =private on the road you are supposed to use. http://wiki.openstreetmap.org/wiki/Key:access http://wiki.openstreetmap.org/wiki/Key:access I agree. There's also access=customers that I use for parking lots. access=destination is supposed to be some legal notion in the UK. In the private facility case, it's really a question of some places being signed for no access and some being welcoming, but it a with-permission-of-landowner kind of way. Another approach is to use access=no for the ones you shouldn't use (and for which almost no one among the public gets permission) and access=permissive for the one the public should use. It's a little off; presumably going there at night is not ok. But as a represent-the-world-with-what-we-have-now approach, it seems like a pretty good fit. pgpJSi98RFypM.pgp Description: PGP signature ___ Tagging mailing list Tagging@openstreetmap.org https://lists.openstreetmap.org/listinfo/tagging
Re: [Tagging] Accuracy of survey
It was over 5 meters in some places along the coast, but only a very small part. Under the ocean, it was 25m. Most of japan stayed put, but the northern section along the coast was stretched a bit wider, but the coast sank about 1m, so with coastal flooding, japan didn't get that much bigger. There was no uniform movement so you'll get a different number depending on what number you like (largest, average for Ojika peninsula, average for North Japan, etc) Anyway you slice it, The Pacific Ocean is a bit smaller now. So Northern Japanese mountains, roads, and farms all have fractionally different dimensions and altitudes now. Everyone talks about the big one, but there were thousands of aftershocks, and a hundred or so very large ones, including ones inland that caused 1m tall fissures, gaps, and trenches to open up all over north japan, severing roads and buildings. All of them have different elevations now and slightly different road alignments. The release of pressure from the big one allowed all of the smaller inland faults to start moving again. Here's a pdf (full of pictures) of a 6.6 a month later that caused 1m uplift and offset in Fukushima. http://www.geerassociation.org/GEER_Post%20EQ%20Reports/Tohoku_Japan_2011/QR4_Preliminary%20Observations%20of%20Surface%20Fault%20Rupture_06.06.11.pdf At the small peninsula closest to the earthquake, Ojika-hanto, the parking lot across the street from the shoreline is the new shoreline. I visited in July 2011. This is completely due to the lowering of the seabed from the quake. https://www.flickr.com/photos/javbw/11091302756/in/set-72157638113676925 The sidewalk is visible(left), but the unclassified road to the far left and the old shoreline, is completely underwater now, as is the pier. While realigning the coastline is possible, they will be surveying for a decade or so just to figure out everything that moved. Javbw Sent from my iPad On Dec 31, 2014, at 9:36 PM, Mateusz Konieczny matkoni...@gmail.com wrote: According to http://www.dw.de/quake-shifted-japan-by-over-two-meters/a-14909967 it was 2,4 m. 2014-12-30 22:22 GMT+01:00 Rainer Fügenstein r...@oudeis.org: W Ultimate 'accuracy'? You do realise that the tectonic plates are moving? btw: as a result of the Mar.2011 earthquake, japan has moved by at least 5m. how did OSM react? ___ Tagging mailing list Tagging@openstreetmap.org https://lists.openstreetmap.org/listinfo/tagging ___ Tagging mailing list Tagging@openstreetmap.org https://lists.openstreetmap.org/listinfo/tagging ___ Tagging mailing list Tagging@openstreetmap.org https://lists.openstreetmap.org/listinfo/tagging
