[OSM-newbies] POI or Polygon?

Craig Wallace craigw84 at fastmail.fm
Sun Apr 18 17:44:16 BST 2010


On 18/04/2010 17:19, Xavier DOR wrote:
> I was playing around with OSM maps for my Garmin GPS.
> I have noticed that some polygons tagged as supermarket or fast_food
> were not rendered in my Garmin.
>
> Therefore, when I am looking for something -let's say a fast food like
> McDo-, it shows me the closest McDo entered as a POI in the OSM
> database, altough another McDo exists closer. But this last one being
> entered in the database as a polygon, it does not show in the Garmin
> device.
> Both McDo are tagged the same way, altough one is a POI and the other is
> a polygon.
>
> Should we therefore favour POI instead of Polygons to enter places like
> restaurant, supermarkets, shops, etc. ?

No. Polygons / areas are more accurate and more useful, so they should 
be preferred where possible.

Mkgmap has an option for "--add-pois-to-areas".
This should create POI for shops / restaurants etc mapped as areas, so 
they can be found on Garmin.
So you need to create some Garmin maps using that option, then it should 
work as you would like. I don't know if there's any ready made Garmin 
maps using that option.

Craig




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