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<p class="MsoNormal">Hi Graeme, </p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I’m not too sure about the mapping of destroyed features in OSM...
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<p class="MsoNormal">Michael just raised a similar point: <a href="https://lists.openstreetmap.org/pipermail/tagging/2021-June/061689.html">
https://lists.openstreetmap.org/pipermail/tagging/2021-June/061689.html</a></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">My understanding is that OSM shouldn’t be used to map historical, non-existent things according to:</p>
<p class="MsoNormal"><a href="https://wiki.openstreetmap.org/wiki/Good_practice#Don't%20map%20historic%20events%20and%20historic%20features">https://wiki.openstreetmap.org/wiki/Good_practice#Don't%20map%20historic%20events%20and%20historic%20features</a></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Similar to how you shouldn’t map abandoned railways if there is absolutely no trace of them left.</p>
<p class="MsoNormal">But there seem to be exceptions to this, so I think someone else needs to answer this question.
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal" style="border:none;padding:0cm"><b>From: </b><a href="mailto:graemefitz1@gmail.com">Graeme Fitzpatrick</a><br>
<b>Sent: </b>Friday, 4 June 2021 16:38<br>
<b>To: </b><a href="mailto:tagging@openstreetmap.org">Tag discussion, strategy and related tools</a><br>
<b>Subject: </b>Re: [Tagging] Feature Proposal - RFC - Survey Markers</p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Nice work, Kyle!<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">On Fri, 4 Jun 2021 at 13:23, Mateusz Konieczny via Tagging <<a href="mailto:tagging@openstreetmap.org">tagging@openstreetmap.org</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:4.8pt"><o:p> </o:p></p>
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<p class="MsoNormal" style="margin-left:4.8pt">Though I really appreciate<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:4.8pt"><o:p> </o:p></p>
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<p class="MsoNormal" style="margin-left:4.8pt">> survey_point:condition=destroyed is not proposed. If the survey marker no<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:4.8pt">> longer exists, it should be deleted from OSM.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Wondering about this one?<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">To prevent armchair mapping of old points that have been identified as no longer existing, or to stop somebody wandering around looking for a point that "should" be here, would it be better to leave these tagged as demolished (destroyed?):survey_point=yes?<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal" style="margin-left:4.8pt">BTW, what is the difference between<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:4.8pt">survey_point:structure=beacon man_made=survey_point<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:4.8pt">and<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:4.8pt">man_made=beacon<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">While they may look similar, a survey_point=beacon is intended for surveying; while a man_made=beacon is usually used for navigation purposes & will usually be lit, or active electronically.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Thanks<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Graeme<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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