[Talk-GB] natural=heath

[SK53]

No-one has solved conflation in OSM, so there is no mechanism for
re-merging branches (I suspect that it's fundamentally very hard for geo
data).

If there were usable common conflation techniques there would be many fewer
problems with imports.

A more viable approach is a post-processed version of OSM data. A couple of
the firms doing routing apps do various QA routines before pushing out new
releases. The problem is that it's quite easy to do decent post-processing
clean-up on data for specific domains (roads, boundaries, retail etc), but
one gets back to the conflation problem it it's necessary to merge these
together again.

Jerry

On 9 January 2017 at 12:40, Jez Nicholson <jez.nicholson at gmail.com> wrote:

> has there ever been discussion about code branching in OSM? In git terms,
> we are all making changes direct to master. I'm wondering whether small
> changes could be automatically approved and large changes would require
> peer review first.
>
> I know that this is a huge change to the base infrastructure, so maybe a
> bot that auto-challenges large/sweeping changes?
>
> ....or is this like in QI when the siren goes off because someone proposes
> something that has is a commonly held fallacy? or been discussed ad nauseam
>
> - Jez
>
> On Mon, 9 Jan 2017 at 12:29 ael <law_ence.dev at ntlworld.com> wrote:
>
>> On Mon, Jan 09, 2017 at 11:53:51AM +0000, SK53 wrote:
>> > Somehow I have been oblivious to the fact that large numbers of polygons
>> > tagged natural=heath have been added over the past few months to OSM.
>>
>>
>> I too have encountered at least one armchair mapper who (in my view)
>> incorrectly tagged large areas of Bodmin moor with this nonsense.
>> I changed this rubbish in the areas that I have directly surveyed, but
>> did not think that I should override another mapper who clearly had
>> spent a lot of effort in adjacent areas without consultation.
>>
>> I first noticed this problem several months ago: I cannot remember
>> whether I tried to contact the mapper to ask what was happening.
>>
>> I have had other instances of armchair mappers adding what I regard as
>> very dubious landuse tags to areas that I have extensively surveyed.
>> When I contacted one of the main offenders; I didn't get a very helpful
>> response.
>>
>> Anyway, I suspect that this is a problem over large areas.
>>
>> ael
>>
>>
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>
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