Hi, I would like to add MHO on this tagging thread. I also support the highway=path vs highway=footway tag, as the latter seems less generic, more like a sub-type of higghway=path related to a pedestrian use (see http://wiki.openstreetmap.org/wiki/Tag:highway%3Dfootway) set that seems complicated to. It is even based on imagery and most of time is never officially set in the field by a specific sign as it is on the map features example. But actually a lot of mappers use it as a default, and I would like to know when they use highway=path. This tag is also specified in the Tracing guide for Gula/Lira TM jobs ( http://hot.openstreetmap.org/sites/default/files/Tracing%20Guide.pdf). I have some other comments regarding the tagging indcations: - highway=track for both generic roads and dirt roads seems weird. I would agree for a generic dirt roads but a generic road is generally tagged with highway=road - main artery tagged by default with highway=tertiary. Basic default highway classification should be more =unclassified. Does =tertiary have been chosen because it is rendered in a really more visible way than =unclassified? - leisure=common might be interesting but its status is still undefined ( http://wiki.openstreetmap.org/wiki/Leisure%3Dcommon). Taginfo shows it is used (http://taginfo.openstreetmap.org/search?q=leisure%3Dcommon) but it is far (http://taginfo.openstreetmap.org/search?q=area%3Dyes) from the very generic area=yes tag (http://wiki.openstreetmap.org/wiki/Tag:area%3Dyes) - for the natural cover, I would also add natural=scrub ( http://wiki.openstreetmap.org/wiki/Scrub) - think there is a typo for natural=treev
Sincerely, Severin ------------------------------ > > Message: 2 > Date: Thu, 6 Sep 2012 23:42:44 +0200 > From: nicolas chavent <[email protected]> > To: Mike Dupont <[email protected]> > Cc: william skora <[email protected]>, [email protected] > Subject: Re: [HOT] Senegal - Dakar Flooding Activation > Message-ID: > < > cafexrte10urnl_5xomlgj1q94zvva8bzl53ayeebxk-zqsl...@mail.gmail.com> > Content-Type: text/plain; charset="iso-8859-1" > > Hey there- > > Back from Senegal a couple of days ago and will blog soon around the > TechCamp, the flooding and the status of OSM there > > First thanks to all those who contributed to this response: the progresses > of the map are important and your work had a strong impact down there > amongst the TechCamp participants as well as among GISers I met from the > UN, Gov Agency, Academics and Techs. Furthermore it fostered the > remobilization of the nascent Senegalese OSM community by heating things > up. > > A few point on this tagging thread. > > * highway values most likely to be used and fit for these areas of > Dakar, I'd like to echo Will and others on *residential*, and strongly > support Jaakko's views on *path *(vs footway) which seems well suited for > the most narrow streets. I would refrain when mapping remotely to use > living_street which calls for on-the-ground knowledge and de facto right of > way between vehicle and pedestrians. This is a tag to better explain/ > portray and push to the mappers down there. More generally, with Jaakko, > Brian and Sev we feel a need to better articulate guide on using highway > values below tertiary in developing countries. > > * surface values: I would use from the imagery *paved/unpaved*, a great > deal of unpaved roads in Pikine and Guediawaye are *sand* > > * On the squares/ piazzas, I feel like Harry and would refrain from tagging > them leisure=*pitch/ playground* and/or *parking* since those uses are > really changing over time in the course of the day. Those usages also apply > to a good deal of streets where as a kid, I learned playing street soccer > and hanged out for long hours in wedding/ funerals and later party. I would > then stick to Harry's call: highway=pedestrian and area=yes + drawing roads > (highway=residential) along the edges of the area > > * Flooding related tags. I like the work started by Stephane and think that > it would be worth taking advantage of this flooding to solidify and > generate consensus on the tags > In the mapping party we held in Dakar last Saturday, we pushed forward the > following tags to map on the ground the worst hit areas in the view of > building a datasest of flood prone points. > hazard_prone=yes > hazard_type=flood > 2012:flood_height= > 2009:flood_height= > 2007:flood_height= > We will be waiting for satellite imagery processing to get the various > extents (OCHA tasked UNOSAT to carry out such a work with imagery requested > through the Charter) > > Again thanks. > Nico > > On Wed, Sep 5, 2012 at 10:13 PM, Mike Dupont < > [email protected] > > wrote: > > > Ok, we had had a good bootcamp so far, about 70 people, tomorrow we will > > start working on sengal. > > mike > > > > > > On Wed, Sep 5, 2012 at 5:06 PM, william skora <[email protected] > >wrote: > > > >> Hi, > >> > >> Apologies for the delays. Here's some answers to a few questions. > >> "In some cases of > >> really narrow, hardly visible streets or deep inside a residential > >> area I've used living_street because I assume pedestrians or children > >> playing football use them more often than cars." > >> > >> Regarding the tags of ways, we've done a great job so far, given the > >> ambiguity of the areas, osm tags, and current situation. As most of > >> you have consistently tagged, a majority of the ways as > >> highway=residential (which is appropriate, mostly houses are very > >> small businesses, run out of the home or as a storefront). > >> > >> However, as discussed in the quoted portion and in this picture > >> http://imgur.com/AuNTC - there are a few ways that are not very wide > >> and deserve more consideration. > >> I did a very rough measurement using the measurement plugin and bing > >> imagery, the one in the examples are ~3.5 meters wide, just wide > >> enough for a smaller car or typical taxi. In my experience in dakar > >> for several months, some of these ways still have cars pass through > >> them, although may or may not receive a little less traffic than > >> other, wider streets that are marked as residential . However, there > >> are also many ways, with different levels of visibility on bing > >> imagery, that aren't wide enough for a car to go through, surrounded > >> by residential buildings (likely the best tag for those, > >> highway=footway. When I first started mapping dakar, I tagged the > >> narrow ways as highway=service. In a few cases that I surveyed in > >> person, I've tagged them as highway=footway. In summary, on the ground > >> surveying would provide the context and information that the bing > >> imagery can't provide so I'm not sure what tags would be most > >> appropriate for these narrower ways without on the ground surveying. I > >> hesistate to use highway=living_street > >> http://wiki.openstreetmap.org/wiki/Living_street since there aren't > >> (as far as I know) any traffic laws that categorize these narrower > >> ways than from other residential ways. > >> > >> I spoke to one mapper on the ground in Dakar who told me the > >> areas/ways that Harry mentioned in a conversation a couple days ago > >> are used mostly by kids as play areas; so leisure=pitch ? or > >> playground ? (although there's no equipment ?). > >> > >> Lastly, there are some areas that are more floodprone than others. > >> Personally, I would hesistate for others to tag them ([based solely on > >> bing imagery] and think this may be a job most appropriate to those > >> who are on the ground or have been. What tags have been used ? Any > >> recommended strategies ? > >> > >> Regards, > >> will. > >> > >> _______________________________________________ > >> HOT mailing list > >> [email protected] > >> http://lists.openstreetmap.org/listinfo/hot > >> > > > > > > > > -- > > James Michael DuPont > > Member of Free Libre Open Source Software Kosova http://flossk.org > > <http://flossk.org>Saving wikipedia(tm) articles from deletion > > http://SpeedyDeletion.wikia.com > > Contributor FOSM, the CC-BY-SA map of the world http://fosm.org > > Mozilla Rep https://reps.mozilla.org/u/h4ck3rm1k3 > > > > > > _______________________________________________ > > HOT mailing list > > [email protected] > > http://lists.openstreetmap.org/listinfo/hot > > > > > > > -- > Nicolas Chavent > Humanitarian OpenStreetMap Team > http://hot.openstreetmap.org/weblog/ > http://wiki.openstreetmap.org/wiki/WikiProject_Haiti > Mobile (Haiti): +509 4617 3334 > Mobile (FRA): +33 (0)6 52 40 78 20 > Email: [email protected] > Email: [email protected] > Skype: c_nicolas > Twitter: nicolas_chavent > -------------- next part -------------- > An HTML attachment was scrubbed... > URL: < > http://lists.openstreetmap.org/pipermail/hot/attachments/20120906/8aad784b/attachment.html > > > > ------------------------------ > > _______________________________________________ > HOT mailing list > [email protected] > http://lists.openstreetmap.org/listinfo/hot > > > End of HOT Digest, Vol 31, Issue 6 > ********************************** >
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