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<p>From an IT perspective we should be keeping form and function separate. There are two facts here:</p>
<p>1) the altitude of that point is 14505 ft - it is what it is, whatever units you use. Saying the altitude is 4421.124m is also correct. The value needs a number and a unit, in an agreed format. It doesn't have to be human-readable (although that helps), but it must be computer-parsable. The representation of the both the number and the unit are for "internal use" and are expected to be formatted in some way before being presented to a human (decimal points/thousands separators for example).</p>
<p>2) there is a sign that reads "14,505 feet" - human-readable and recognisable.</p>
<p>It is trying to conflate these two things that makes life so complicated in OSM. Even street name signs suffer from this - streets are called whatever the authority says they are called. If there is a sign saying something else, then there are two facts here, both equally valid but from different perspectives.</p>
<p>It's a shame we don't have any discussion about OSM information modelling. I could start some, but because that would inevitably lead to some concept of "right" and "wrong" ways of tagging, I will save my energy for more productive things.</p>
<p>//colin</p>
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<p>On 2015-04-03 13:18, Warin wrote:</p>
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<div class="moz-cite-prefix">On 3/04/2015 8:33 PM, Bryce Nesbitt wrote:</div>
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<div class="gmail_quote">On Fri, Apr 3, 2015 at 2:14 AM, Warin <span><<a href="mailto:61sundowner@gmail.com">61sundowner@gmail.com</a>></span> wrote:<br />
<blockquote class="gmail_quote" style="padding-left: 1ex;">ele= only takes meters as a unit .. the reason states is that "Renderers have no way of doing conversions on the fly to local units while creating image tiles" ... and this is an 'approved' tag.</blockquote>
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<div class="gmail_extra">That's mapping for the rendering's back-end SQL database.</div>
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<br /> Not saying it is good... but that is what is written in the wiki. <br /><br />
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<div class="gmail_extra"><br /> If I'm staring at a sign that says "14,505 feet", that's certainly how I want to tag it.</div>
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Agreed!!!!<br /><br /> Conversions should be done remotely rather than by a tired mapper at 14,505 feet! And are best done by a tried and tested code. <br /><!-- html ignored --><br />
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