[Talk-ca] More Google Copying
Sam Vekemans
acrosscanadatrails at gmail.com
Mon Feb 22 01:47:03 GMT 2010
http://geodepot.statcan.gc.ca/2006/180506051805140305/06180505162102/92-500-072305/2009001/qual-eng.htm
*Elections Canada Geographic Database*
In 1993, Elections Canada started to compile the Elections Canada Geographic
Database, using data from the Street Network Files, National Topographic
Database and Digital Chart of the World. Paper maps were created for areas
not covered by the Street Network Files and were distributed to the
Elections Canada returning officers, who added the road names with
information from the field. Elections Canada updated the road network with
new roads and added the road names but not address ranges.
...
So it could have been from NTDB data origionally, but the road name could
have been copied down wrong by the elections Canada officer. Where the
purpose was really to just get 'a' roadname, as the actual statistics
package was what they were after.
... and it appears that the data quality would also very across the
country. In which case, sliding it to where the GeoBaseNRN says the roads
are, would be the best bet.
Cheers,
Sam
On Sun, Feb 21, 2010 at 5:21 PM, Sam Dyck <samueldyck at gmail.com> wrote:
> Could someone check? StatsCan's website isn't working for me
>
> Sam
>
>
> On Sun, Feb 21, 2010 at 7:17 PM, Sam Vekemans <
> acrosscanadatrails at gmail.com> wrote:
>
>> Hi,
>> Yup, i just sent off a nice message. Hopefully it will be recieved. I'll
>> let you know if i get a responce back.
>>
>> On Sun, Feb 21, 2010 at 4:42 PM, Dan Putler <dan.putler at sauder.ubc.ca>wrote:
>>
>>> Could the data be from the StatsCan RNF? That would explain the geometry
>>> being off, while having street names on the ways.
>>>
>>> Maybe?
>> Then if that's true... then i think it's fine what the user is doing.
>> Its still improving the map (from a blank map).
>> Once the NRCan data is available, then more work is needed (for everywhere
>> for all the features). But again it's to improve the map. So the fact
>> that the geometry is off. We need to ask, how much off is it?
>> ... if it's within 10meters, then it's still acceptable (as thats the GPS
>> standard, when no other sources are available).
>>
>> Since GeoBase roads just has the basic linework is available. The
>> solution would be to also convert the GeoBaseNRN data for Manitoba, then
>> have the .osm files open in JOSM & adjust the OSM data to fit the GeoBase
>> road network geometry.
>> And the other solution is to be copying directly from the NRCan paper map
>> sheets (available as PDFfiles). they just need to be alligned with some
>> identifing points (the sheets have corner coordinates on it) and matched to
>> JOSM points. (i used Garmin MapSource to make a waypoint at the exact
>> corners of the sheet to get it lined up)
>>
>> A manual process, but if it's done by local people while adding more
>> details, it shouldn't be that hard.
>>
>> Cheers,
>> Sam
>>
>>
>>> On Sun, 2010-02-21 at 16:34 -0800, Adam Dunn wrote:
>>> > The NRN site confirms that names are not available in Manitoba (NRN
>>> > for that province is on version 3) [1]. Sam, maybe you should send a
>>> > nice email explaining that a blank map is better than an illegal one.
>>> > This person has made edits to my hometown that I basically had to
>>> > revert because the geometry was way off. Don't know what his source
>>> > is...
>>> >
>>> > [1] http://www.geobase.ca/geobase/en/data/nrn/status.html
>>> >
>>> > Adam
>>> >
>>> > On Sun, Feb 21, 2010 at 4:03 PM, Sam Dyck <samueldyck at gmail.com>
>>> > wrote:
>>> > About an hour ago he/she was editing in Saskatoon, and has
>>> > done a lot of work in Rural Manitoba to.
>>> >
>>> >
>>> >
>>> > On Sun, Feb 21, 2010 at 5:48 PM, Sam Vekemans
>>> > <acrosscanadatrails at gmail.com> wrote:
>>> > Not sure if this link works
>>> >
>>> http://www.itoworld.com/product/osm/map?area=1372:7&show=users&sort=total-&colour=date:30
>>> > But you can see whats going on in the area..
>>> > (or just log in and zoom to the area to find the
>>> > mappers)
>>> >
>>> >
>>> http://picasaweb.google.ca/lh/photo/Orkp7E40gO0fwyJ8AKlIZQ?feat=directlink
>>> >
>>> > Ya, it seems like alot of work has been done
>>> > reciently.
>>> >
>>> > Cheers,
>>> > Sam
>>> >
>>> >
>>> > Twitter: @Acrosscanada
>>> > Blog: http://Acrosscanadatrails.blogspot.com
>>> > Facebook: http://www.facebook.com/sam.vekemans
>>> > Skype: samvekemans
>>> > OpenStreetMap IRC: http://irc.openstreetmap.org
>>> > @Acrosscanadatrails
>>> >
>>> >
>>> >
>>> >
>>> > On Sun, Feb 21, 2010 at 3:36 PM, Sam Dyck
>>> > <samueldyck at gmail.com> wrote:
>>> > I did, Geobase doesn't even have the street
>>> > and lacks street names in Manitoba. (at least
>>> > this is the case in the viewer. The Geobase
>>> > data in Winnipeg appears to be out of date by
>>> > at least 14 years in some cases.
>>> > But yes, a mapping party would be a good idea,
>>> > any other Winnipegers on this list?
>>> >
>>> >
>>> >
>>> >
>>> > On Sun, Feb 21, 2010 at 5:18 PM, Sam Vekemans
>>> > <acrosscanadatrails at gmail.com> wrote:
>>> > Thanks for sharing.
>>> > The user seems to be doing alot of
>>> > great work.
>>> > Did you cross-check with the GeoBase
>>> > data?
>>> > Im not sure what the spelling of it is
>>> > in there.
>>> >
>>> > If anyone is in Winnipeg, perhaps a
>>> > couch mapping party is needed?
>>> >
>>> > Cheers,
>>> > Sam
>>> >
>>> >
>>> > On Sun, Feb 21, 2010 at 3:05 PM, Sam
>>> > Dyck <samueldyck at gmail.com> wrote:
>>> >
>>> >
>>> > So I just got a job that
>>> > involves entering addresses
>>> > into Google Maps (don't ask),
>>> > one of these streets, Drobot
>>> > Place (all address in
>>> > winnipeg), Google has either
>>> > deliberately or accidentally
>>> > named Drobol Place (here,
>>> > compare Yahoo, Bing, City of
>>> > Winnipeg Assesment, Google
>>> > Street View (Needs Flash)).
>>> > OSM makes the same mistake as
>>> > Google, which leads me to
>>> > beileve that the street and
>>> > others were copied from
>>> > Google. I really hate telling
>>> > people that I caught them
>>> > "cheating." (I'm sure it was
>>> > an honest mistake) Could
>>> > someone please contact the
>>> > editor responsible (you can
>>> > look him/her up, I don't want
>>> > to name names. I would be
>>> > willing to help with any
>>> > followup and cleanup, and you
>>> > can give them my username
>>> > (sammuell) if you wish, I just
>>> > can't bring myself to send a
>>> > message explaining just how I
>>> > caught them.
>>> >
>>> > Thanks
>>> >
>>> > Sam
>>> >
>>> >
>>> >
>>> >
>>> >
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>>> >
>>> >
>>> >
>>> >
>>> >
>>> >
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>>> --
>>> Dan Putler
>>> Sauder School of Business
>>> University of British Columbia
>>>
>>>
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>>
>>
>
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