Hello 2018-04-15 22:54 GMT+03:00 Frederik Ramm wrote: > The most likely location for this to be discussed is probably within the > openstreetmap-carto developer community as they would benefit most from > such approaches. I don't follow their work closely though so couldn't > say if the issues have been discussed in the past.
Good point. I'll watch openstreetmap-carto. >> Also, maybe there are ideas to translate the thesis mentioned above >> to English? > I'm not aware of any plans, but I do know that Arne has quoted similar > work done by others, and there were many English-language works among > that, so perhaps if you skim through his literature list at the end of > the PDF you'll find interesting articles. I'm already buried in pdf's from google scholar :-) You start with one paper, then open references, then references in references and here you are the "wikipedia effect". The point is that Arne's work looks (from what I did understand) at generalising openstreetmap data, while most papers look at general data. This is important because OSM tagging does help a lot. Some generalisation can be done much easier with OSM data because of additional tags and you can add additional tags describing some real properties (not designed for the sole purpose of generalisation) of an objects which could help generalisation. For example with road generalisation, a lot is written on intersection generalisation. Having *_link ways or ref tags in OSM helps this effort a lot. Railway network also has different subtags like main/siding/spur etc. which also helps a lot. So while generalisation is generalisation anywhere, but generalisation of OSM data does have some important and useful differences/advantages. Another interesting thing is recalculating/updating generalised data. "OSM way" is to update very often. So it is important to be able to recalculate generalised data only on impacted part and it is not as trivial as calculating "dirty tiles". I do not know how much of that is covered in Arne's thesis. Will try to read/translate German version if there are no plans for translation. Thank you! -- Tomas _______________________________________________ dev mailing list [email protected] https://lists.openstreetmap.org/listinfo/dev
