[Tagging] Feature Proposal - RFC - Ephemeral a water property key.

Warin 61sundowner at gmail.com
Thu Dec 13 01:36:51 UTC 2018


On 13/12/18 11:52, Sergio Manzi wrote:
>
> Hello Warin,
>
> I think that extending the defined values for intermittent=* could 
> yield the same result and convey the very same information *without 
> adding a new tag* (/don't we have enough?/)
>
> Assuming (/and this is just an assumption at this time.../) that we 
> are able to define a correct and agreed cutoff value for the frequency 
> of an event for it to be defined /ephemeral /vs. /intermittent/, then 
> we could simply add the following keys for intermittent=*:
>
>   * ephemeral_spring
>   * ephemeral_summer
>   * ephemeral_autumn
>   * ephemeral_winter
>   * ephemeral_dry_season
>   * ephemeral_wet_season
>
> ... and be happy with that! :-)
>
Yes and no...

At the moment developing a system to render seasonal values on requires 
a  determination on spring/summer/autumn/winter etc .. this would add 
some new terms. Not too hard but does add to things.

Not certain about ephemeral being subservient to intermittent.

> Cheers,
>
> Sergio
>
>
> On 2018-12-13 00:14, Warin wrote:
>> Hi
>>
>> I have reworked the ephemeral proposal.
>>
>> This now demonstrates;
>>
>> the difference between intermittent and seasonal - some want to 
>> combine them into one and see the ephemeral key as just another 
>> intermittent/seasonal thing so they vote no.
>>
>> that ephemeral applies to more that just streams - some want it as a 
>> sub key to streams .. that is not possible if it applies to other 
>> things, these people too vote no.
>>
>>
>> It now draws on the seasonal page to demonstrate the use of the 
>> seasonal values.
>>
>>
>> I see this key being used by the experienced local who can draw on 
>> local knowledge.
>>
>> The arm chair satellite mapper will have to stick with intermittent 
>> as they will not be able to determine if seasonal nor ephemeral 
>> apply, they may not even be able to determine intermittent.
>>
>>
>> I hope this proposal page is now somewhat clearer?
>>
>>
>> https://wiki.openstreetmap.org/wiki/Proposed_features/ephemeral
>>
>>
>> ---------------------------
>>
>> I may do a dairy entry on seasonal, intermittent and ephemeral. Looks 
>> to me like a lot of confusion probably promoted by the use of 
>> intermittent everywhere.
>>
>>
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>
>
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