Am 06.07.2012 um 13:28 schrieb Tobias Knerr <[email protected]>: > On 06.07.2012 08:47, Martin Vonwald wrote: >> One issue of the ext-cond jumped into my mind again when I read your >> examples above: in the prop it is written that the most specific value >> should be taken. But what is "most specific"? I think the correct >> determination of this could be quite complex. > > It simply means that if one of two non-identical boolean expressions > implies the other (which is an established and well-defined concept), > then it is more specific. > > Implementing this should just be a bit of routine programming work.
If you say so. So a general speed limit of 100, 80 for hgv and 70 for all in case of rain, snow and ice is crystal clear (for mappers and apps)? >> The variants with keys like <key>:condition:<ordering> would solve this IMO. > > You could replace "specificness" with "whatever condition comes first". > But that would burden the mapper with making sure that maxspeed:hgv:wet > is listed before maxspeed:hgv, with no good reason why that should be > important. Good point. If the "specificness" is just a "bit of routine programming work" everything's fine. Martin _______________________________________________ Tagging mailing list [email protected] http://lists.openstreetmap.org/listinfo/tagging
