[mkgmap-dev] [PATCH v1] Reimplementation of add-pois-to-areas option

Tue Oct 4 08:01:09 BST 2011

On Tue, Oct 04, 2011 at 09:32:40AM +0300, Bartosz Fabianowski wrote:
>>Therefore, I have been tagging the main entrance with the same tags as 
>>the building polygon, replacing building=yes with building=entrance. 
>>Is this really tagging for renderers?
>
>I would say it is not tagging for the renderer but it is odd tagging 
>nonetheless. A building=entrance should be all you need. Why repeat all 
>the other tags? This creates unnecessary duplicate data and makes it 
>harder to maintain the POI in the future.

OK, you are probably right. If we think about Garmin routing, it takes 
the routing network and two points: source and destination. Then it 
computes the route as follows:

1. straight line from source to the closest point on the closest way
2. follow the route network
3. straight line from the closest point on the closest way to destination

So, if there is a POI in the middle of an area, this routing should 
actually work, as long as the way to the entrance has been mapped. If 
there are multiple entrances, then it will help to have the major 
corridors inside the building (such as a large shopping facility) on the 
map.

Best regards,

	Marko