I'd like to present house number over building area, see attached
picture. House number is an attribute of building polygon. The same goes for building name.
Off topic about address search: There exist better approach for point addressing, which is already used in some maps but not supported by mkgmap yet. The idea is to convert address point to a very short invisible road and then add this road to search index. This has advantage of precise location of address and also gives possibility to include house number with letters in street name.
Maybe you could think about some kind of procedure, which would allow to convert poi to a line? Like an new option for mkgmap: add-lines-to-poi? Sounds interesting. I guess the algo for this is not very different from that which calculates the nearest road. Maybe WanMil knows more about this?
So instead of using Garmins housenumber search you want to add a small road for each POI named with "${streetname} ${housenumber}'? Technically this sounds quite easy to implement. Some questions about that: * Wouldn't that blow up the index size? * Must each invisible road be connected to the rest of the road network? Otherwise I expect that Garmin is not able to route to the housenumbered streets and we get thousands of routing islands? * mkgmap would have to modify/create a TYP file with one invisible road type. Should this be processed by mkgmap or is that a task of the map generator to ensure that the additional road type is invisible? WanMil