[mkgmap-dev] addr:interpolation ways not along road

Tue Mar 24 08:07:00 GMT 2015

Hi Thorsten,

I agree that the data doesn't look that bad.
My problem is this:
1) We have to interpret the info in addr:interpolation ways because
it helps to find the right intervals in many cases,
for example it normally gives a clear hint to which part of a road 
a pair of houses belongs when muultiple roads form a # shape.
See http://www.openstreetmap.org/node/427691367
which is closer to a different road. 
2) On the other hand, a lot of the addr:interpolation
ways in Canada are wrong, e.g.
http://www.openstreetmap.org/way/75809612
crosses the road.
If mkgmap only ignores this wrong addr:interpolation
way it will still use the obviously wrong odd house number
3367 for the road side that has even numbers.
So, mkgmap should also ignore that number.
As it is sometimes difficult to decide which of the two numbers is
wrong, I decided that it is okay to ignore both.

I guess I have to find more detailed rules :-(

Gerd

> Date: Tue, 24 Mar 2015 08:35:22 +0100
> From: kukuk at suse.de
> To: mkgmap-dev at lists.mkgmap.org.uk
> Subject: Re: [mkgmap-dev] addr:interpolation ways not along road
> 
> 
> Hi,
> 
> On Mon, Mar 23, GerdP wrote:
> 
> > Hi all,
> > 
> > I wonder if mkgmap should treat this a valid addr:interpolation way:
> > http://www.openstreetmap.org/way/32922365
> > 
> > The wiki says:
> > "How to interpolate the house numbers belonging to the way along the
> > respective street."
> > 
> > but this way connects house numbers which are up to 170 m away from the road
> > named Bergweg, so I think it is not "along" the respective street.
> 
> The addr:interpolation way is valid in the regard that it matches reality.
> If this is good tagging is another question.
> 
> And if the street really stops that early: I don't know, the
> pictures of bing and google are not good enough for this.
> 
> But I know that this will not really help you. 
> 
> Thorsten
> 
> -- 
> Thorsten Kukuk, Senior Architect SLES & Common Code Base
> SUSE LINUX GmbH, Maxfeldstr. 5, 90409 Nuernberg, Germany
> GF: Felix Imendörffer, Jane Smithard, Jennifer Guild, Dilip Upmanyu, Graham Norton, HRB 21284 (AG Nürnberg)
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