[Talk-ca] Addressing in Canvec.osm

Bégin, Daniel Daniel.Begin at RNCan-NRCan.gc.ca
Wed May 12 15:31:06 BST 2010


Gentlemen, 

Victor wrote ...
"Please please *please* use metres" : Difficult to say no !-)

"I'd prefer 14-17 metres for highway=tertiary and below, and 20-23 metres for highway=secondary and above, if such a distinction is possible" : It makes sense.  I'll try to go as you suggest with 15 and 20 meters

Tyler wrote ...
"insetting the start and end of each interpolation way the same amount from the start and end of the street is probably a good idea" : It is exactly how it works - in respect with Canvec schema.!

Daniel


-----Original Message-----
From: Victor Bielawski [mailto:bielawski1 at gmail.com] 
Sent: 12 mai 2010 09:43
To: Bégin, Daniel
Cc: Tyler Gunn; Talk-CA OpenStreetMap
Subject: Re: [Talk-ca] Addressing in Canvec.osm

On Wed, May 12, 2010 at 1:32 PM, Bégin, Daniel <Daniel.Begin at rncan-nrcan.gc.ca> wrote:
> What distance did you use? I was to use 0.0001 degree (about 10 meters in Halifax) for addressing in Canvec.osm.  What would you suggest?

Please please *please* use metres. Merkaartor has some code that generates address interpolation ways using degrees, and it results in the distance from streets depending on the street's orientation, and looks plain ugly in any projection apart from latlon.

As for the distance itself, I'd prefer 14-17 metres for highway=tertiary and below, and 20-23 metres for highway=secondary and above, if such a distinction is possible. This is based on observations from Toronto and area; I don't know about other cities.

--
Victor Bielawski




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