Re: [Tagging] Feature Proposal - RFC - Sinkholes refinement

2017-09-11 Thread Jean-Marc Liotier 
On Mon, 11 Sep 2017 07:54:09 +
David Marchal  wrote:
> [..]
> flow_direction=both, to model water streams connected to estavelles,
> which is a karst feature acting as spring or ponor depending on the
> current conditions, as these streams can have their flow reversed if
> the estavelle starts acting the opposite to usual; I remember this
> tag has already been used a few times in OSM.

That one is especially interesting as it answers the need of
https://www.mail-archive.com/talk-fr@openstreetmap.org/msg84532.html
(in French) who wondered how to map waterways in marshy grounds, that do
not have a clear flow directions or whose flow direction may vary.

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Re: [Tagging] Feature Proposal - RFC - Sinkholes refinement

2017-09-11 Thread David Marchal 
Hello, there.

RicoZ has drawn my attention on the fact that my proposal introduced new keys 
which are not meant to be specific to sinkholes, and that it could be better to 
mention them here, so here are the new tags which are not sinkhole-specific:

  *   anthropogenic=yes, to model the fact that a feature tagged as natural=* 
is anthropogenic; in the proposal, it is introduced to explain piping 
pseudokarsts, or mining sinkholes, but it can be used for any natural=* feature 
which appeared because of human activities, for example natural=peak on spoil 
tips;
  *   karst=yes, to model the fact that the water of a spring originates from a 
karst system, i.e. it’s a karst spring; this tag could also be used on anything 
of karstic origin, like caves or tunnels;
  *   refitted=yes, to model the fact that karstic features have been altered 
by humans, for instance by refitting the hole with concrete or metal bars; this 
tag could also be used on any natural feature which has been altered by humans, 
for instance spring coming through a pipe or captured for human consumption;
  *   flow_direction=both, to model water streams connected to estavelles, 
which is a karst feature acting as spring or ponor depending on the current 
conditions, as these streams can have their flow reversed if the estavelle 
starts acting the opposite to usual; I remember this tag has already been used 
a few times in OSM.

I created the 3 first tags as, despite my research, I wasn’t able to find an 
already used fitted tag, but, if there are some, feel free to give them on the 
Talk page. Regarding flow_direction=both, it was mentioned on a Tagging ML talk 
months ago, but, if there is some better fitted tag, again, please give it on 
the Talk page.

Awaiting you comments,

Regards.

Le 9 sept. 2017 à 17:25, David Marchal 
> a écrit :

Hello, there.

I’ve created a proposal for better tagging of sinkholes, as they can be of 
multiple types, not currently acknowledged by mainstream tagging practices. 
This proposal can be read here: 
https://wiki.openstreetmap.org/wiki/Proposed_features/Sinkholes_refinement Any 
comments should be left on its talk page.

Awaiting your comments,

Regards.
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[Tagging] Feature Proposal - RFC - Sinkholes refinement

2017-09-09 Thread David Marchal 
Hello, there.

I’ve created a proposal for better tagging of sinkholes, as they can be of 
multiple types, not currently acknowledged by mainstream tagging practices. 
This proposal can be read here: 
https://wiki.openstreetmap.org/wiki/Proposed_features/Sinkholes_refinement Any 
comments should be left on its talk page.

Awaiting your comments,

Regards.
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