<html><head><meta http-equiv="Content-Type" content="text/html charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class=""><div class="">Hi all,</div><div class=""><br class=""></div>Recently I discovered a tagging where at the same street address and house number, 3 different (although related) companies are located. <div class="">Because adding multiple values to the same key is not easy to do in OSM, (mostly used for adding more telephone numbers, separating the numbers with a semicolon), and in this case the mapper had chosen to simply add three nodes and duplicate all the relevant address tags.<div class="">Because all three companies had an office=research tag and because the office tag is not rendered at all on the standard map(!!) but only shows the addr:housenumber (when present), the above described tagging resulted in showing 3 times the same address node on the map. Which by definition is wrong because a given street address (addr:city + addr:street + addr:postcode + addr:housenumber) _must be unique_ - at least in the country (The Netherlands) where I live and where I found this situation.</div><div class=""><br class=""></div><div class="">In The Netherlands _all_ buildings and the related address nodes were (and still are) imported in a huge import (BAG) which was discussed years ago and also presented in a wiki:</div><div class=""><br class=""></div><div class=""><a href="http://wiki.openstreetmap.org/wiki/BAGimport" class="">http://wiki.openstreetmap.org/wiki/BAGimport</a></div><div class=""><br class=""></div><div class="">Dutch mappers usually add POI information (like a shop, restaurant, hotel etc. ) to an existing address node and usually this works well, except when we face the situation where more objects share that very same address. E.g. it is not uncommon to have a hotel and a bar share the same building and address. In this case the hotel is added to the (existing) address node and a new node is created for the bar, but without the address information and this node is simply put within the contour of the hotel building.</div><div class=""><br class=""></div><div class="">The situation I’m describing here, with 3 research offices all sharing the same address would (could?) lead to tagging like this:</div><div class=""><br class=""></div><div class="">addr:street=streetname</div><div class="">addr:housenumber=X</div><div class="">office=research</div><div class="">name=“name of first office”;”name of second office”;”name of third office”</div><div class="">webiste=“website-1”;“website-2”;“website-3”</div><div class="">phone=“phonenumber-1”;“phonenumber-1”;“phonenumber-1”</div><div class=""><br class=""></div><div class=""><br class=""></div><div class="">Which wouldn’t be my choice of solving this problem, suppose the values for office would differ as well, this would give even more complicated tag combinations. Maintaining/checking it would be cumbersome.</div><div class="">How to render this mess?</div><div class=""><br class=""></div><div class="">Other solutions have been presented over the years in various wikis, forums and mailing-lists, but a satisfactory solution still has to be found, hence my question to continue reading and study this proposal that was done in 2011:</div><div class=""><br class=""></div><div class=""><a href="http://wiki.openstreetmap.org/wiki/Proposed_features/associatedAddress" class="">http://wiki.openstreetmap.org/wiki/Proposed_features/associatedAddress</a></div><div class=""><br class=""></div><div class="">I wrote the mapper who proposed this a PM and he replied with the message that he is no longer very active on OSM.</div><div class="">I have used this proposed relation for the tagging of the 3 named offices here:</div><div class=""><br class=""></div><div class=""><a href="http://www.openstreetmap.org/relation/7676306" class="">http://www.openstreetmap.org/relation/7676306</a></div><div class=""><br class=""></div><div class="">Of course because this is an unsupported type of relation, nothing shows on the map, save the (one) house number, but here you can see the situation as it was before I added my changes:</div><div class=""><br class=""></div><div class=""><a href="https://marczoutendijk.stackstorage.com/s/vgHPvYALM4p7n6t" class="">https://marczoutendijk.stackstorage.com/s/vgHPvYALM4p7n6t</a></div><div class=""><br class=""></div><div class="">With tools like OpenPoiMap you can see some results, but because the address tags are removed you have to guess that those 3 offices share the same address:</div><div class=""><a href="http://openpoimap.org/?map=various&zoom=18&lat=52.81317&lon=6.39542&layers=B00FFFFTFFFFFFFFFFFFFFF" class="">http://openpoimap.org/?map=various&zoom=18&lat=52.81317&lon=6.39542&layers=B00FFFFTFFFFFFFFFFFFFFF</a></div><div class=""><br class=""></div><div class=""><br class=""></div><div class="">I must say that this way of tagging (with a relation) looks quite clear to me, is easy to do and opens up many possibilities. But is it easy to render once accepted? </div><div class=""><br class=""></div><div class="">Hence:</div><div class=""><br class=""></div><div class="">1. Should we continue and discuss and finally vote for the proposal mentioned above?</div><div class="">2. Can you think of another solution for this specific problem: “how to map/tag multiple (sometimes even not related) objects to the same (one) address node?”</div><div class=""><br class=""></div><div class="">Thanks for any input,</div><div class="">Marc.</div><div class=""><br class=""></div><div class=""><br class=""></div><div class=""><br class=""></div><div class=""><br class=""></div><div class=""><br class=""></div></div></body></html>