On Wed, Feb 04, 2009 at 12:37:50PM +0100, Chris-Hein Lunkhusen wrote: > D Tucny schrieb: > > > <http://www.informationfreeway.org/?lat=51.912&lon=7.737&zoom=16> > > > > But the stream is tagged as layer -1, so is underground as landuse > > > will assume 0 (but render behind other layer 0 objects). > > > > Yes, streams are often tagged as -1 so that they are rendered > > under streets. In Wiki there is also the recommendation to > > tag waterways as -1. > > > > So landuse should never cover other objects. > > Landuse should be assumed as layer -100. ;-)
Virtual landuse things like residential and industrial are done at -5 (the lowest layer osmarender processes). The practice of always tagging waterways as -1 sound stupid to me, the layer tag is meant to describe where something is in relation to the normal earth surface, and I'd say most streams are _at_ that height, not (significantly) below it. > > I thought there was a discussion about this at some point in the past > > and that the outcome was that the feeling was that landuse should be > > drawn first, though allowing layers within the landuse 'layer' then > > other features drawn over whatever the outcome of the landuse layer > > was... which, would be effectively the same as making landuse > > effectively exist at -100 to -90... > > Can't remember the details, but will try and find the mails... > > It makes no sense that a "virtual" object like landuse > covers any "real" object like streams or whatever, no matter > what the layer is. As forests are physical objects they are drawn in the normal order. -- Knut Arne Bjørndal aka Bob Kåre [email protected] bobk...@irc
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