[Talk-ca] Converted Stats Can Boundaries files.

Bégin, Daniel Daniel.Begin at RNCan-NRCan.gc.ca
Tue Jul 27 15:59:27 BST 2010


I agree with Richard,

Here is more information...

The first Osm Canadian/Provinces/Territories boundaries were imported from GeoBase in 2008 - actually the original contributor just confirmed me.  These imported GeoBase boundaries were, and still being used, for GeoBase products definition - NRN, NHN, ... 

I understand that one of the primary objective for StatCan, creating similar boundaries, is to make census field work easier - not necessarily geometrically accurate!  So, their boundaries might be different from GeoBase boundaries - and Osm - because it serves another purpose.

The same applies to many georeferenced StatCan products, like Road Network ... 

Regards,

Daniel



-----Original Message-----
From: talk-ca-bounces at openstreetmap.org [mailto:talk-ca-bounces at openstreetmap.org] On Behalf Of Richard Weait
Sent: 23 juillet 2010 12:37
To: Talk-CA OpenStreetMap
Subject: Re: [Talk-ca] Converted Stats Can Boundaries files.

On Fri, Jul 23, 2010 at 10:50 AM, Sam Vekemans <acrosscanadatrails at gmail.com> wrote:
> hi talk-ca,
> because it is an entire complex web of relations, were 1 way has 2 or 
> more relations attached to it, i'd recomment the solution on the wiki, 
> if we want to preserve the rule that all bountaries need to be 
> relations.
>
> then the 1st task is the look at the povince file, and remove the 
> existing boundary data that will cause duplicate ways.

I presume you mean "keep the existing data and don't use the duplicate data from the file."

> then once each province is all clear, then 1 person can upload it all at once.

Come on now, you aren't really suggesting removing existing boundary data just to add it back in, are you?  That doesn't sound very considerate of the previous mappers.

Have you looked at the relative technical merits of the existing boundary data and the StatsCan data Tyler just converted?  Are they from the same source, or is one of provably lower quality?

How about starting with a smaller test than a complete province?
Would anyone care to take a look at their neigbourhood and the related and adjacent boundaries?

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