[OSM-dev] Chopped of ways. Change Default or remove ID

Marcus Wolschon Marcus at Wolschon.biz
Thu Aug 14 08:46:45 BST 2008



On Thu, 14 Aug 2008 07:56:26 +0200, Jochen Topf <jochen at remote.org> wrote:
> On Thu, Aug 14, 2008 at 03:44:57PM +1000, Brett Henderson wrote:
>> Karl Newman wrote:
>>> Even still, it's a valid concern and there are other operations (i.e.,
>>> cutting into tiles or tag transforms) that can manipulate the data
>>> into a form that probably shouldn't be uploaded.
>>>
>>> Karl
>> Yep, agree.  If it wasn't the default behaviour it would just be far
>> less likely to occur :-)
...
> But people *want* to use the data they get from some kind of extraction
> process to base decisions upon. And they should be able to. Not all the
> data is invalidated by an extraction, only some of it. It makes sense
> to mark those parts invalid that are, so that an automated process can
> decide what it uses and what not.

I propose to not modify ways by default and to remove the way-id of
ways that are modified during extraction.
What should a tool care if the way references node-ids that it has
no nodes for because they are outside the bounding-box? It has to ignore
them.

The removal of the ID is because this is no longer the way with
that ID but a new and artificially created way that contains a part
of the original one.

Marcus






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