[Talk-us-massachusetts] Adding new open space parcels to the inventory

Jason Remillard remillard.jason at gmail.com
Thu Dec 7 02:27:07 UTC 2017


Hi Marc,

There are two separate issues. The easy part is the geometry of the properties.

The L3 parcels image layer

http://tile.osm.osuosl.org/tiles/massgis_parcels/{zoom}/{x}/{y}.png

Like Greg, said, it is pretty good. Unless you know its wrong, or have
better data from the town, it is the way to go. You can also load in
the shape files into JOSM too, per Alan's instructions.

The "hard part" is the tagging. The OSM tagging system, and the
conservation classifications used in Massachusetts really don't fit
together well. For example, this was just posted a couple of days ago,

http://www.openstreetmap.org/user/kocio/diary/42861

Keep in mind that boundary=protected isn't even rendered yet on the
main OSM site, it might be why your newly mapped conservation lands
are not showing up.

They didn't even mentions the "deprecated" landuse=conservation tag
that is used all over MA.

I settled on the following tagging system on the land ways.
- If the conservation land is open to the public, and nobody is using
it as a forest, leisure=nature_reserve (rendered),
landuse=conservation (not rendered anymore)
- If the conservation land is open to the public, but the land owner
harvests the trees (like NEFF), landuse=forest (rendered) and
leisure=nature_reserve (rendered)
- If the conservation land is not open to the public, I don't map it
(like a conservation restriction on a private farm).

Hopefully someday the boundary=protected_area tag gets rendered and
rationalized to make sense for MA.

I use the owner= tag to document who the land owner is, and ignore the
CR's. The main site does't render it, but I am working on a new web
site that uses this tag.

The path tagging is easier.

highway=path (highway=footway is ok too, make sure the surface tag is used too).
surface=ground, etc
name= name of trail,

access=yes/public if the trail is known to be open to the public by
law, (easement, owned by the town, CR, etc)
access=private if the trail is on private property, and it is known
that the land owner doesn't want people on it.
access=permissive if the land owner is ok with the public being on the
trail, but they can change their mind at any time.
no access tag, if you aren't sure if it is OK to be on the trail or not.

Bonus tags.
operator= if the trail is "maintained", the name of whomever maintains the trail
colour=color of the badge


Jason

On Wed, Dec 6, 2017 at 7:06 AM, Marc Sevigny <marc.sevigny at gmail.com> wrote:
> I searched the archives and but couldn't find the answer, so apologies if
> this has been discussed already.
>
> I am on an Open Space committee in my town and we have added to our open
> space inventory.  Some parcels have conservation restrictions, and some are
> permanently protected and owned by the town.  Several don't show up as such
> on the map.  Does anyone know how I get these properly identified with the
> property boundaries?
>
> Google maps default view shows property lines, and I don't know how those
> get in there, but those could form the geometries for the OSM
> identification.
>
> Marc
>
>
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> Talk-us-massachusetts at openstreetmap.org
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