> We just had this conversation a couple threads ago. This sort of land > ownership border doesn't really belong in OSM because we can't improve it. >
In OSM as a whole, or just in the US? When I peruse the various hiking/path/trail tagging portions of the Wiki, I found this: " Since the tagging is generic, it is up to each country to decide how to map the hiking networks that exist in their country onto the hierarchy of national/regional/local. For countries with no specific local/regional/national "walking network" (... that would be the US, although there is Federal Trails Register), it may be helpful to consider whether different trails are managed or funded by government bodies at different levels." And the usually, this is define by the "ownership", and in this case, not necessarily who has 'title' to the land, but who has management responsibility - so perhaps "ownership" doesn't precisely capture the semantics, as compared to "management". The Wiki has a plethora of tagging attributes <http://wiki.openstreetmap.org/wiki/Hiking>, most of which are defined by this aspect of management. ( If you are curious how this semantics has already been described as attributes by working groups from trail organizations, NGOs, corporations, city, county, state, and federal agencies see: ... mostly after about a decade of arguing like on http://wiki.openstreetmap.org/wiki/Path_controversy :-) see http://www.nps.gov/gis/trails/Doc2/FTDSAttributeOverview-DataAttributesGroupedbyFunctionalCategoryB.pdf - the full process of how group of people came to an understanding about what goes in or out of the map is here <http://www.nps.gov/gis/trails/>. And if you drill down into the categories and attributes that are already in OSM, internationally, they are pretty much driven by what Derrick call 'ownership' (management). Which means you could capture these attributes with a relatively simple rectilinear polygon ( an artifact of the PLSS) encompassing several hundred if not thousands of square kilometers and thousands of miles of trail system with low dataspae and maintenance impact, or you could attach all those individual attributes to each and every segment. > As a hiker, I also think the data have value because it is important to > know where you will get shot at if you cross over. > ... not just to you, but everybody particpating in the annual $730 Billion Active Outdoor Recreation Economy<http://www.outdoorindustry.org/images/researchfiles/RecEconomypublic.pdf>. Gee, I wonder if there are any potential OSM contributors in there some where ... ? > The correct way to do this is to mix it into the dataset you use when > creating data for your Garmin Oregon. That way you get the most up-to-date > and correct information direct from the people that make the rules. > And thereby essentially isolate any of the 'improvements to the map' made by that individual and their user community. > We just had this conversation a couple threads ago. This sort of land > ownership border doesn't really belong in OSM because we can't improve it. > That would seem to indicate social, process and technology issues which can be addressed systematically. But for every mention of '... it doesn't belong in OSM', even in my very short exposure (weeks) perusing the Wikis and maps, I find examples already in OSM. > > It's already in OSM because some people imported the BLM data so they > could see national park boundaries. > Because the National Parks are important to people. All parks are important. All outdoor access is important to people. NPS, NFS, BLM, state DNRs, all manage recreation land. I disagree. If we can't improve it then the only thing it can do is sit in > the database and become wrong. > I have been perusing the various tool sets in and around OSM, bots, taginfo, and several examples like Green2Go, validation routines in the editor and everyone of these could be potentially applied to any other type of OSM data, Id the backend of OSM DBs on computer servers or somefolks poking sharp sticks into wet clay and the baking it<http://formaurbis.stanford.edu/>? :-) Michael Patrick Data Ferret
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