[OSM-talk] GeoBase nodes import

Sam Vekemans acrosscanadatrails at gmail.com
Thu Dec 18 09:07:27 GMT 2008

Thanks :)Bonkers? ... perhaps :@)

Actually, that would be the just the 1st step. meaning that;  On those
mapped areas where say - if the actual shapes were imported, you would see
'ghost lines'. .. this is not preferred.  So, by just seeing the reference
points, then these shapes can be drawn in by hand (where needed).

Then, on the areas where it has been just OSM roads done, the rest of the
import can happen, so the connect-the-dots would just be for the roads.

Going this way, it would avoid the number 1 objection to the import, which
is importing data showing up as ghost lines, because the change-detect
script wasn't able to detect that someone already drew in the map feature.

and going this way, would also solve the problem of how to deal with
updates..... they would get imported as nodes instead of ways.  (so not
to interfere with any mappers work)

So far, in discussions, what came up was the importance of not undermining
the work of mappers who have spent the last couple years trying to make the
map an accurate representation of the real world.  (doing it this way, it
would give the command back to the OSM mappers, rather than 1 big mapper
going onto openstreetmap and trampling over everything ... it's like a
newbie, messing up on potlatch or JOSM... but 10,000 times worse)

So far, it looks like the majority of the country would be able to accept a
full import of everything... except the roads. .. it's only 10 or so tiles
that nothing would be imported (just nodes), and less than 100 where only
roads would be omitted.  (there are 12,539 tiles in Canada) (.5x.25 degrees)
- something like that... the actual breakdown will (should) be posted on the

I hope that makes sense,
Thanks for the input :)

Sam Vekemans
Across Canada Trails

On Thu, Dec 18, 2008 at 12:34 AM, Tom Hughes <tom at compton.nu> wrote:

> Sam Vekemans wrote:
>  I wanted to float the idea (to the general talk list) about importing
>> the full data base that is available, not as shapes/ways/lines, but as
>> nodes which show
>>  what map features the node represents.
>> So for example, importing a park (in a mapped area) we would just show
>> the outline dots of the park, and the user can connect the dots and
>> show it the 'right' way osm-style.
> Huh?!? So nothing from the Geobase import would actually appear on the map
> until somebody had gone and traced over it manually? Have I actually
>  understood that correctly? Only it sounds bonkers to me...
> Tom
> --
> Tom Hughes (tom at compton.nu)
> http://www.compton.nu/
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