[mkgmap-dev] mkgmap:city empty in large cities

Fri Apr 24 13:15:13 BST 2015

Hi Gerd,

I think the problem with Ottawa is a problem with the data. The current
Ottawa boundary describes a municipal level entity composed of the a bunch
of former small cities (including the city of Ottawa which is now downtown
area of Ottawa).

Looking at Canada in the administrative boundary list and using Toronto as
an example, the current Ottawa boundary should be admin level 8.

https://wiki.openstreetmap.org/wiki/Tag:boundary%3Dadministrative

The National Capital Region should be admin level 6 but I can't find a
boundary for it.

https://en.wikipedia.org/wiki/National_Capital_Region_%28Canada%29

The suburbs within Ottawa (the former full cities) should be admin level
10. Again there are no boundaries but these suburbs are used officially for
addresses. For instance, you can find Kanata listed in the Canada Post
postal code lookup app.

https://www.canadapost.ca/cpo/mc/personal/postalcode/fpc.jsf

It looks like the address setup in mkgmap is incorrect for this setup
because admin level 10 is what people use for addresses in the big cities
in Canada. I can fix this and send a patch.

As for your original question, I think adding the safety catch at the end
would be a good idea just in case there are other areas that have broken
data.

or should we add a one to this block:
> mkgmap:city!=* & mkgmap:admin_level8=* { set
> mkgmap:city='${mkgmap:admin_level8}' }
> mkgmap:city!=* & mkgmap:admin_level7=* { set
> mkgmap:city='${mkgmap:admin_level7}' }
> mkgmap:city!=* & mkgmap:admin_level9=* { set
> mkgmap:city='${mkgmap:admin_level9}' }
> mkgmap:city!=* & mkgmap:admin_level10=* { set
> mkgmap:city='${mkgmap:admin_level10}' }
> e.g.  a further line with
> mkgmap:city!=* & mkgmap:admin_level6=* { set
> mkgmap:city='${mkgmap:admin_level6}' }
>

Nice catch! Thanks, Ben

On Thu, Apr 23, 2015 at 10:13 AM, Gerd Petermann <
gpetermann_muenchen at hotmail.com> wrote:

>  Hi all,
>
> I noticed that our rules in inc/address do not set
> mkgmap:city in Ottawa/Ontario.
> Adding an additional line like the 2nd below solves the problem:
> # Canada
> mkgmap:country=CAN & mkgmap:region!=* & mkgmap:admin_level4=* { set
> mkgmap:region='${mkgmap:admin_level4}' }
> mkgmap:country=CAN & mkgmap:city!=* & mkgmap:admin_level6=Ottawa { set
> mkgmap:city='${mkgmap:admin_level6}' }
> mkgmap:country=CAN & mkgmap:city!=* & mkgmap:admin_level8=* { set
> mkgmap:city='${mkgmap:admin_level8|subst:City of }' }
>
> or should we add a one to this block:
> mkgmap:city!=* & mkgmap:admin_level8=* { set
> mkgmap:city='${mkgmap:admin_level8}' }
> mkgmap:city!=* & mkgmap:admin_level7=* { set
> mkgmap:city='${mkgmap:admin_level7}' }
> mkgmap:city!=* & mkgmap:admin_level9=* { set
> mkgmap:city='${mkgmap:admin_level9}' }
> mkgmap:city!=* & mkgmap:admin_level10=* { set
> mkgmap:city='${mkgmap:admin_level10}' }
> e.g.  a further line with
> mkgmap:city!=* & mkgmap:admin_level6=* { set
> mkgmap:city='${mkgmap:admin_level6}' }
>
>
> I assume that there are more large cities with this problem.
> Does anybody know how to find them without mkgmap ?
>
> Gerd
>
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