I agree, since there were not too many individual houses in the city, it was a lot better (plus nominatim can find nodes addresses). They were -for a long time- the only house numbers we had in OSM.
Sometimes it's in fact difficult as a monument can be a facade which encompasses 3 house numbers. So I had to check the 'onroerenderfgoed' links to make sure what house numbers they refer to. Often it's a 1 on 1 downward merge , but I've seen plenty of cases where there is a 1-house size offset. All in all, I would say AGIV is pretty accurate for Mechelen (I did all of Zemst, Bonheiden and Mechelen now) but there are still issues of more recent data not being there (and the house + number exist). New street(names), demolished buildings still in the AGIV database etc. it's never complete. But I believe the results OSM Mechelen vs Google Mechelen is worth it. http://aptum.bitless.be/?pcode=2800&loadOsm=true&collapsedSections= You also need a house/building to be there to work efficiently, I found a lot of errors on corners ( that leaded me to the conclusion that most house numbers where 'guessed' by using other sources , or by extrapolating, not too scientific. I think I did a lot of them now. wish I had a decent analysis tool to show me exactly how much crab work I've done so far, but to conclude: - having decent buildings before migration house numbers is almost essential. - mapping houses together with numbers is painstakingly slow. Better create houses first, then later on (days, months, whatever) they will be visible on the map when you start with phase 2: - mapping house numbers. Sanders tool is essential, especially the integration with JOSM remote control. - extra care needs to be taken when you have existing data, associated street relations will be deleted (most of them yours too ;-) once a road is completed, all the houses are there. - Sometimes there is NO house number attached to the 'erfgoed', So I have to check the inventory to see what it applies to. - Sometimes is also needed to make it more complex, like https://inventaris.onroerenderfgoed.be/dibe/relict/88684 -> https://www.openstreetmap.org/relation/5620662 - There have been occasions where I used the erfgoed information to validate a house number. You don't want to change the house number on the erfgoed itself, as that would be inacurate, just to accommodate the map (or routers), hence you need to change that single node into a site relation (which I think is very well suited for this) I believe that was a good call you made by making nodes. migration that information with the terracing plugin is as easy as doing CTRL+shift+T Cheers! Glenn On 17-11-15 13:30, Marc Gemis wrote: > On Tue, Nov 17, 2015 at 1:27 PM, Glenn Plas <gl...@byte-consult.be> wrote: >> and I encountered many >> 'monumenten' from you, which I nicely migrated from node to buildings :) > > that's very kind of you. I didn't do that from the beginning, because > it was too difficult to find the location of the house numbers back > then. We didn't had AGIV CRAB. I thought individual nodes were easier > to merge/reposition than badly shaped/positioned building areas. > > What is your opinion ? > > regards > > m > > _______________________________________________ > Talk-be mailing list > Talk-be@openstreetmap.org > https://lists.openstreetmap.org/listinfo/talk-be > _______________________________________________ Talk-be mailing list Talk-be@openstreetmap.org https://lists.openstreetmap.org/listinfo/talk-be
