[Talk-ca] canvec mep feature 229009 Cut line - (Percée) - landuse=cut_line for a way

Sam Vekemans acrosscanadatrails at gmail.com
Sun Feb 21 19:10:49 GMT 2010


14- Cut line - (Percée) 2290009 [image:
way]<http://wiki.openstreetmap.org/wiki/File:Mf_way.png> Autre
- ( Autre ) Other than firebreak. 2290021
landuse<http://wiki.openstreetmap.org/wiki/Key:landuse>
=cut_line<http://wiki.openstreetmap.org/w/index.php?title=Tag:landuse%3Dcut_line&action=edit&redlink=1>
14- Cut line - (Percée) 2290009
[image: way] <http://wiki.openstreetmap.org/wiki/File:Mf_way.png> Firebreak
- ( Coupe-feu ) Cleared land or a manmade barrier intended to prevent the
spread of fire. 2290031 landuse<http://wiki.openstreetmap.org/wiki/Key:landuse>
=firebreak<http://wiki.openstreetmap.org/w/index.php?title=Tag:landuse%3Dfirebreak&action=edit&redlink=1>
14- Cut line - (Percée) 2290009
[image: way] <http://wiki.openstreetmap.org/wiki/File:Mf_way.png> Unknown -
( Inconnu ) Impossible to determine the type of cut line from the data
source. 2290011 man_made <http://wiki.openstreetmap.org/wiki/Key:man_made>=
cutline <http://wiki.openstreetmap.org/wiki/Tag:man_made%3Dcutline>

Hi all,
In CanVec, we have 'cutline' as represented by a way.. (and not listed as an
area)

However, for looking at the map at a higer zoomlevel. (from far away) it's
fine to list the cutline.. as an actual line (just like a river can be
listed as a way... but when you get more detailed... it needs to be an area,
if its appropriate width of scale.

 However, in OpenStreetMap, we want to be more detailed than that.  As we
know that a cutline is actually an area which was man_made and cut... so
that ice_roads could be made.. or cables can be layed... or simply clear cut
for wood harvesting. ... (or a set of highly efficient beavers) :-)

We know that the land, might get used for different activities. .. such as
(a cross country ski trail in the winter) or a hiking route ... or a ATV
track..
or only parts of it get used.

So basically, it's a map feature that is important to have on a map, as it's
helpful to map users to navigate.

ALSO... we know that the CanVec feature for natural=wood land_use=wood. ...
is also available, as a polygon. .. so this 'cut line area' is often
shown...  simply by the natural_wood area not being there.  ... so we
already know that without that line 'cutline' ... we can already depect that
this line (area of cut trees) ... most likely exist.

However, we cant assume that this cutline exists... just because there is no
landuse=wood polygon around.

..... So whats the solution?
We have a map feature that is available from canvec that is available as a
line. ... and it needs to be tagged so it's useful on a rendered map &
useful for a Garmin map. :)

I recommend man_made=cutline
http://wiki.openstreetmap.org/wiki/Tag:man_made%3Dcutline
... and simple man_made =cutline is suffice
... on the garmin map, it will show up as just a line.
I recommend adding the tags
"name=Cut Line"
"name:fr=Percée"

The wiki really needs to be cleaned up, and we do have more examples (right
from canvec) that can be used to further define this page.
I can use the Garmin Map view of it (from Ibycus topo) since its the same
source.  Would that be ok to show?

Oh ya.. it's the wiki page
http://wiki.openstreetmap.org/wiki/CanVec:_Vegetation_%28VE%29 that im
looking at. .. i'll chage the googledocs to go to this discussion thread
for details...


Cheers,
Sam

Twitter: @Acrosscanada
Blog:  http://Acrosscanadatrails.blogspot.com
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Skype: samvekemans
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