Am 30.10.2015 um 11:10 schrieb Martin Koppenhoefer: > > 2015-10-30 10:52 GMT+01:00 Christoph Hormann <chris_horm...@gmx.de > <mailto:chris_horm...@gmx.de>>: > > So far use of vector tiles seem to primarily > have lead to the following effects: > > - improved tile serving efficiency > - a larger bandwidth of style variations > - tighter contraints in basic styling decisions beyond what is already > imposed by the OSM data model > > > > some additional points that come into mind: > > - vector maps are consuming more energy to display (because have to be > calculated/rendered) -> problem on mobile devices, but also generally > a problem because every client has to spend energy on calculating the > "same" image (admittedly depends how many different styles there are, > and how many people are looking at them until the underlying data > changes), so globally (i.e. wikipedia use and not some "niche" > usecases) this means really a lot of wasted energy. > > - are likely slower to display (for the same reason), although this is > depending on different factors (e.g. if you have internet connection > and how fast it is (vector maps likely scale better for offline use), > how complex the style sheet is, etc.) -> generally vector maps require > more ressources, newer more capable client devices.
I don't think anybody is contemplating moving completely away from server-side tile rendering osm.org at this point in time, using vector tiles pre-rendering will likely simply be a further option. I kind of half agree with Christoph, but I think the perspective that the vector tiles are a complete replacement for a style specific rendering database is likely simply wrong. So while vector tiles allow to produce a group of related styles where you previously simply had one, if you are doing something completely different you will not be able to use the same tile set. Naturally, in a wide sense of the word, there is likely a substantial amount of economic pressure to reuse what is already there which might lead to really different styles becoming rarer than they are now . Obviously Andy, Christoph, Richard et al know a lot more about this than I do. Simon
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