[Tagging] Giant river multipolygons

2013-01-28 Thread Tobias Knerr
Dear tagging list, as many of you may know, it is documented practice that riverbank areas can be split into several small parts, as illustrated in this image: http://wiki.openstreetmap.org/wiki/File:Make_river.png Nevertheless, there appears to be a trend to merge them into a single area for the

Re: [Tagging] Giant river multipolygons

2013-01-28 Thread Martin Vonwald (imagic)
Am 28.01.2013 um 17:26 schrieb Tobias Knerr : > Am I missing something? Dont think so. > I'd like to hear your opinions. My opinion is your opinion: if there is no good reason for gigantic areas, don't use them. Martin ___ Tagging mailing list Tag

Re: [Tagging] Giant river multipolygons

2013-01-28 Thread Malcolm Herring
On 28/01/2013 16:26, Tobias Knerr wrote: I'd like to hear your opinions. +1 As a developer of both editing and rendering software, such data structures are troublesome. I dislike multipolygons with multiple disjunct outers both as a mapper & as a developer. I have had to abandon edits when

Re: [Tagging] Giant river multipolygons

2013-01-28 Thread John F. Eldredge
Malcolm Herring wrote: > On 28/01/2013 16:26, Tobias Knerr wrote: > > I'd like to hear your opinions. > > +1 > As a developer of both editing and rendering software, such data > structures are troublesome. I dislike multipolygons with multiple > disjunct outers both as a mapper & as a develo

Re: [Tagging] Giant river multipolygons

2013-01-28 Thread Toby Murray
In theory, I like trying to go towards "one feature in the world == one feature in OSM" but of course we break that theory a lot by splitting roads for various reasons. But being able to do a search for "Danube River" and getting back a single object from nominatim would be nice. As pointed out, i

Re: [Tagging] Giant river multipolygons

2013-01-28 Thread Werner Hoch
Hi, Am Montag, den 28.01.2013, 17:26 +0100 schrieb Tobias Knerr: > Nevertheless, there appears to be a trend to merge them into a single > area for the entire river via multipolygons. This has been brought to my > attention by a recent changeset > http://www.openstreetmap.org/browse/changeset/1480

Re: [Tagging] Giant river multipolygons

2013-01-28 Thread Malcolm Herring
On 28/01/2013 17:53, Toby Murray wrote: But being able to do a search for "Danube River" and getting back a single object from nominatim would be nice. Here is a conflict. Creating a tagging convenience for one tool can have negative impacts on other tools. At least nested relations separate t

Re: [Tagging] Giant river multipolygons

2013-01-28 Thread Paul Johnson
On Monday, January 28, 2013, Werner Hoch wrote: > Hi, > > Am Montag, den 28.01.2013, 17:26 +0100 schrieb Tobias Knerr: > > Nevertheless, there appears to be a trend to merge them into a single > > area for the entire river via multipolygons. This has been brought to my > > attention by a recent ch