[Talk-ca] address:block

Richard Weait richard at weait.com
Mon Aug 24 06:23:03 BST 2009


On Sun, Aug 23, 2009 at 10:38 PM, Sam
Vekemans<acrosscanadatrails at gmail.com> wrote:
> * a first brainstorm
>
> This is a proposal for  the tag address:block=#

For those new to this subject, Sam is revisiting street number
addressing for the automated import of Canadian data.  From GeoBase,
some provinces / territories provide "block face addressing" and tell
us what street addresses are on a particular section of road.  They
provide a first and last address for the left side of the road and a
first ans last address for the right.  When we started the import, not
all prov/terrs provided address data.

> The purpose is to tag what the house numbers are.
> In Canada,
> the address block # is posted directly on the street sign.

Not in my experience.

> Usually in increments of 100,

Not in my experience.

> so it tells the map reader which part of
> the road they are on.

Chicago? Yes, absolutely.  Where you are? Sure.  Calgary and Edmonton?
Yep, pretty organized.  Lots of other places? Perhaps.  But not
everywhere.

> Rendering:
> looking similar to how the 'ref=#' tag is used on highways to show
> distance, this would be a smaller font as its only on a closer zoom
> that it should be shown.

Can you create a prototype of what you are suggesting for the block
face addressing please?  That would help me to understand what you are
suggesting.  And, "how the 'ref=#' tag is used on highways to show
distance" I don't understand.  We use ref to show the highway number.

> Data import:
> usually, the 'address:house number:first left would be it. - (perhaps
> a script could be written to detect the lowest number, then round to
> the lowest 100) (out of the 4 fields available)

I've already seen a nice prototype of Karlsruhe-style[1] interpolated
addresses, automated.  Sadly I don't have the link to that code in
front of me.  Anybody remember it?

Best regards,
Richard

[1] "Karlsruhe Schema" is an organized method of adding address
information to a street, either for individual buildings, or
interpolated addresses to estimate individual address positions.
http://wiki.openstreetmap.org/wiki/Proposed_features/House_numbers/Karlsruhe_Schema




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