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<div class="moz-cite-prefix">Am 30.10.2015 um 11:10 schrieb Martin
Koppenhoefer:<br>
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cite="mid:CABPTjTAjHnhDFthA4gEsNk-5EUgHH6cQ1C1JYXtCnyFPVxvDew@mail.gmail.com"
type="cite">
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<div class="gmail_quote">2015-10-30 10:52 GMT+01:00 Christoph
Hormann <span dir="ltr"><<a moz-do-not-send="true"
href="mailto:chris_hormann@gmx.de" target="_blank">chris_hormann@gmx.de</a>></span>:<br>
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<div id=":2gk" class="a3s" style="overflow:hidden">So far
use of vector tiles seem to primarily<br>
have lead to the following effects:<br>
<br>
- improved tile serving efficiency<br>
- a larger bandwidth of style variations<br>
- tighter contraints in basic styling decisions beyond
what is already<br>
imposed by the OSM data model</div>
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<br>
some additional points that come into mind:<br>
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- 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.<br>
<br>
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<div class="gmail_extra">- 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.<br>
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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.<br>
<br>
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. <br>
<br>
Simon <br>
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