[Talk-ca] 031G05 - Ottawa area
acrosscanadatrails at gmail.com
Thu Oct 29 09:22:38 GMT 2009
I took a look at the 031G05 area, and (thankfully) the file that SteveS put
up there is still available, so i made a copy of it and stored it on the
So i had a look, and ya, it's just like Vancouver, where because of the
buildings, and yahoo imagery which might be a bit off, it looks like it's 8
meters off... for the grid area.
One of the things i noticed is that traffic lights and stop signs were added
here's an image of what the geobase roads look like as a layer underneath
oh, and here's the link to the folder where all of 031g is stored.( canvec &
... ya, it's a tuff call.
I would prefer manually moving the OSM stuff over a bit, only because (if it
was me vising Ottawa) i would take this action method.
1 - I would load the area the the GPS, and head out to town.
2 - I would be looking for whatever map features are missing.. adding in
post boxes, benches, bicycle parking, on the way to finding the bike shop,
and where the local hostels are in town. As well as where the best places to
eat are.. and where i can pick up free wifi. (w/ note pad & pen)
3 - Once i find that free wifi spot, i'll upload my tracks to OSM
4 - I'll open up the geobase_roads.osm file in JOSM
5 - and open up the gpx track file with point in JOSM
6 - download local area to work with.
7 - While adding in the new found features, i'll slide the roads over so
they line up a little bit better. (with the points i just added in)
8 - hide those other layers
9 - upload with a description of what i did.
.... So ya, right now, there is really no need to be spending time moving
the roads over to where geobase said they 'might' be.
Considering that the geobase data isn't top quality, and is rather old in
places. Its really just par to what other OSM mappers would think it is.
(the data quality of GeoBase is -/+ 10 meters across the country)
So really, once you have your tracks in there (uploaded to osm) then you can
get a better guess.
... and ya, just like here in Victoria, there are tree's that need to be
but the way i was taught (for architecture at least) is to draw the outline
of buildings 1st, then the side walks, then the trees. .. so ya.. Once
people go out there and tag tree's and list the herritage buildings, they
will have tracks which follow the route they took, from that, it's easier to
figure out where the sidewalks/roads are.
Hope that helps,
P.S. Here's Tofino as shown on Google Earth. .. i guess it's not really
ccBYsa, but still. I wanted to show whats possable so far (that i know of)
.. it's a 25% transparency from http://www.mgmaps.com/kml/ (they need to
make a transparent ccBYsa so it's shown when looking at it).
... and hey, eventually, when our map gets better, Google will show it with
the ccBAsa :-) .. hopefully....
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