<html><head><meta http-equiv="Content-Type" content="text/html charset=us-ascii"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class="">I do like the idea of one key to rule them all. But I am uncomfortable with a key name which has a negative preface.<div class=""><br class=""></div><div class="">At first I wondered about a perennial tag but then the values might be difficult. Then it occurred that we are trying to tag the presence of something, in this case water. There are only a few things tagged with presence=* now [1] and they look unrelated to water. But how about:</div><div class=""><br class=""></div><div class="">presence=perennial/seasonal/intermittent/ephemeral/summer/spring/winter/autumn/ etc.</div><div class=""><br class=""></div><div class="">And state that perennial be the default if untagged.</div><div class=""><br class=""></div><div class="">Cheers!</div><div class=""><br class=""></div><div class="">[1] <a href="https://taginfo.openstreetmap.org/keys/presence#values" class="">https://taginfo.openstreetmap.org/keys/presence#values</a></div><div class=""><br class=""><div><blockquote type="cite" class=""><div class="">On Dec 13, 2018, at 4:55 PM, Warin <<a href="mailto:61sundowner@gmail.com" class="">61sundowner@gmail.com</a>> wrote:</div><br class="Apple-interchange-newline"><div class="">
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<div class="moz-cite-prefix">Thoughts ... (take on Hobbit like
theme - one key to rule them all...)<br class="">
<br class="">
As both intermittent and seasonal are all render the same .. why
not combine them into one key as well?<br class="">
<br class="">
<br class="">
non_perennial=seasonal/intermittent/ephemeral/summer/spring/winter/autumn/intermittent_summer/ephemeral_summer
etc<br class="">
<br class="">
I note that intermittent is taken by many as 'I know it is
non-perennial' so it may be appropriate to have a
non_perennial=yes for the more common mapping value. <br class="">
<br class="">
??? <br class="">
Well? Is that a reasonable idea? <br class="">
<br class="">
It could be implemented as a mechanical edit on <br class="">
seasonal 1:1. <br class="">
On intermittent=yes ... as non_perennial=yes with a request to
determine a more specific value? <br class="">
On intermittent=<i class="">season</i> ... as non_perennial=intermittent_<i class="">season<br class="">
<br class="">
</i>These could coexist with the present tags while people changed
over. <br class="">
<i class=""></i><br class="">
<br class="">
On 14/12/18 10:58, Sergio Manzi wrote:<br class="">
</div>
<blockquote type="cite" cite="mid:bf5697a2-a81b-5a1e-639b-787528a92f3e@smz.it" class="">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" class=""><p class="">You can do <b class="">exactly the same</b> with my new proposed values
for intermittent=*</p><p class="">No need for a new key, I think.</p><p class="">Cheers,</p><p class="">Sergio</p><p class=""><br class="">
</p>
<div class="moz-cite-prefix">On 2018-12-14 00:48, Warin wrote:<br class="">
</div>
<blockquote type="cite" cite="mid:d4261d73-7bcb-7221-7a3d-62e794287732@gmail.com" class="">
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charset=utf-8" class="">
<div class="moz-cite-prefix">On 13/12/18 12:48, Sergio Manzi
wrote:<br class="">
</div>
<blockquote type="cite" cite="mid:62423be8-97fd-77f6-86cf-86e66b0ab5a1@smz.it" class="">
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charset=utf-8" class=""><p class=""><br class="">
</p>
<div class="moz-cite-prefix">On 2018-12-13 02:36, Warin wrote:<br class="">
</div>
<blockquote type="cite" cite="mid:358bb889-e62e-be8f-dfe3-ae1140f6efdb@gmail.com" class="">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. </blockquote><p class="">Also developing a system to render the ephemeral key would
add some complexity, probably more...<br class="">
<br class="">
</p>
<blockquote type="cite" cite="mid:358bb889-e62e-be8f-dfe3-ae1140f6efdb@gmail.com" class="">Not
certain about ephemeral being subservient to intermittent. <br class="">
</blockquote><p class="">If it is not there all of the time, than it is
intermittent.<br class="">
</p><p class="">If it doesn't last long, than it is ephemeral (<i class="">but then
it is not there all of the time and thus it is
intermittent too</i>).</p>
</blockquote>
<br class="">
The primary motivation for me is that a water feature with
intermittent is more likely to have water, even it I have to dig
a meter or two for it, than a water feature with ephemeral.<br class="">
<br class="">
I don't expect a 'normal' map will tell me this. But a desert
map should. <br class="">
<br class="">
I would map the ephemeral river banks/courses. <br class="">
But then the places where water pools to form more permanent
water sources I would as natural=water, intermittent=yes. In
this way they can be distinguished as a more probable source of
water. <br class="">
Some satellite imagery shows these .. but then some shows the
area just after rain! So it requires some judgements. <br class="">
<br class="">
I'll add this as a rationale ... <br class="">
<br class="">
<br class="">
<br class="">
<br class="">
<br class="">
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