[Tagging] Waterway length

Sergio Manzi smz at smz.it
Sat Feb 16 22:17:30 UTC 2019


Sorry for the typo: of course Wikip_*a*_dia was meant to be Wikip_*e*_dia!

On 2019-02-16 23:15, Sergio Manzi wrote:
> Then why don't you submit a paper to the CNFG (http://www.cnfg.fr/) and correct the Wikipadia articles?
>
> Sergio
>
>
> On 2019-02-16 23:07, marc marc wrote:
>> Le 16.02.19 à 22:32, Sergio Manzi a écrit :
>>> A static value for a river length in OSM, without any information about 
>>> its source
>> every tag you add into osm have a changeset with a source tag, isn't it?
>> so adding the lenght should/must also have a source (extrapolation (sum 
>> of all way of a relation) of osm data is a source)
>>
>> a few month ago, I have checked the length of Rhône [1]
>> the french wikipedia list 2 sources for the lenght... both are very fair 
>> away of the lenght found after some work on osm data.
>> which one to choose? osm without hesitation. maybe it is not fair but at 
>> least it is verifiable (everyone can load the relationship, see the 
>> result and correct errors if necessary) while the other 2 sources 
>> (including the official French source) are totally unverifiable.
>>
>> unfortunately I did not send in osm the result of the cleaning because 
>> it concerned partly errors in osm (mainly roles in the relationship)
>> but I started by purging everything that didn't interest me in the 
>> relationship before fixing. it will have to be done again
>>
>> [1] https://en.wikipedia.org/wiki/Rh%C3%B4ne
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