[Talk-ca] Geobase vs Canvec

[Daniel Begin]

Hi Nakor, and James

No easy answer! Both should be trusted for what they are ...
- Geobase/Canvec.6: Surface and lanes tag, ways, are 10 years old!
- Canvec.7: ways and name tag have 1 year old, surface/lanes are invalid

>From my own experience in Quebec, Canvec.7 highways have a better accuracy
but too much nodes! However, on some isolated area, you might get planed
road or pretty bad accuracy (I found 1.3 Km offset for some roads on
Anticosti island)

I would agree with James, better check on field - when possible!

Regards,
Daniel

-----Original Message-----
From: James Ewen [mailto:ve6srv at gmail.com] 
Sent: May-24-11 21:18
To: talk-ca at openstreetmap.org
Subject: Re: [Talk-ca] Geobase vs Canvec

On Tue, May 24, 2011 at 6:04 PM, Nakor Osm <nakor.osm at gmail.com> wrote:

> I was looking at Canvec data vs Geobase data around Pointe-à-la-Croix, QC
> and Campbellton, NB. Geobase is already there but is missing street names.
> Canvec has street names but all ways are marked surface=unpaved and
lanes=-1
> which I guess is false. There are also some inconsistency in highway
> "levels". Which one is more to be trusted?

Put your boots on the ground. Gather local data and verify for
yourself. That's what this OSM project is all about. People getting
out there and gathering data that is available for everyone to use.
CanVec and GeoBase are shortcuts that we have permission to use, but
we should still do our due diligence and ensure the information that
we are importing is accurate by verifying the information with real
world boots on the ground verification.

James
VE6SRV

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