I prefer that those complete newbies get to mess with only 1 or 2
members of route relations, at the relatively small price of ordering.
Peter Elderson skrev den 03.05.2019 16:12:
> You prefer routes to stay unordered? Or that edits damage routes?
>
> Vr gr Peter Elderson
>
> Op vr 3 mei 2019 om 16:08 schreef <o...@hjart.dk>:
>
>>>>> For a non-roundtrip route consiting of two consecutive ways the route
>>>>> direction can be deduced from the order of the ways in the relation.
>>>>
>>>> That's assuming the ways are ordered at all. I've cleaned up hundreds
>>>> of routes (most created by Potlatch users though) and my advice is: do
>>>> not rely on routes being ordered.
>>>
>>> In OSM a relation is by definition an ordered list, see
>>> https://wiki.openstreetmap.org/wiki/Relation :
>>> "A relation is a group of elements. To be more exact it is one of the
>>> core data elements that consists of one or more tags and also an
>>> ordered list of one or more nodes, ways and/or relations as members
>>> ..."
>>>
>>> Also the elevation profiles for the routes (e.g. in
>>> waymarkedtrails.org [1]) only work if the routes are ordered and they
>>> usually look ok, see also
>>> https://wiki.openstreetmap.org/wiki/Relation:route#Order_matters .
>>>
>>> If some editors damage the order in the relations this is a bug that
>>> should be fixed anyway.
>>
>> In order to sort the members of a relation in JOSM, you need to download
>> all of them. The majority of edits to relations involve downloading only
>> 2-3 members. If only 1 member is added or removed, that's how they
>> become unordered.
>> Personally I'd prefer it stays like that, because I've seen complete
>> newbies make some really weird edits to cycleroutes, because they
>> obviously didn't understand what it was.
>>>
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>>
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Links:
------
[1] http://waymarkedtrails.org
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