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<tt>I think it's easy for a mapper to determine if a station is a
bottom_station or a upper_station even if he doesn't know the
exact elevation.</tt><br>
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<div class="moz-cite-prefix">Am 13.08.2020 um 14:28 schrieb Colin
Smale:<br>
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<p>On 2020-08-13 14:07, dktue wrote:</p>
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<!-- head ignored --><!-- meta ignored --> <tt>I think that
it's quite hard for data consumers (again: think of an
overpass-query to find all mid-stations) to determine which
role a station has. Like Martin said: Why not just solve the
(huge!) special case of mountain aerialways where we really
have one bottom_station, zero or more mid_station and one
upper_station?</tt></blockquote>
<p>Because cases that don't obviously fit that model will remain
untagged, or get subjectively/wrongly tagged with this model or
some other tags. There are many cases of arialways that start
and finish at roughly the same level. Do they have two bottom
stations, or two top stations, or do you force someone to make a
judgement call as to which is slightly higher than the other?</p>
<p>If you want to find all mid-stations, do you want to find ALL
mid-stations or are you happy with MOST or MANY or SOME?</p>
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<p>Modelling reality is all about what to leave out. If
top-stations, mid-stations and bottom-stations can be reliably
derived from elevation and topology then there is no need to add
a more explicit tag.</p>
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