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    <p>Hello everybody,</p>
    <p>I'm the one who, in the Italian mailing list, first brought out
      the issue about how to tag estimated heights (<i>in our context it
        was about trees height</i>).<br>
    </p>
    <p>My first proposal has been to use a new sub-key in which to store
      estimated values, as in "height:estimated=10".</p>
    <p>Then I saw, here, the proposal of using
      "source:height=estimated", which is in use (<i>1543 entries,
        mostly applied to ways: see: </i>[1]), which I thought was a
      better solution then the one I originally conceived.</p>
    <p>Now I see that there is a different solution in use,
      "height:source=estimated", which is less used (<i>149 entries,
        mostly applied to ways: see: </i>[2]), but <b>makes even more
        sense to me, from a syntactical point of view</b>.<br>
    </p>
    <p>Someone also proposed to use "height:accuracy=*" if the accuracy
      is known, but I think this could be used for an estimated value
      too (height:accuracy=estimated). On the other hand this doesn't
      seems to be in use anywhere even though it might be considered an
      even better solution both syntactically and semantically (<i>I
        think "source" should be used to identify "who" is the
        originator of the information</i>).</p>
    <p>In any case I think the various
      est_(width|length|height|whatever) keys should be deprecated and a
      new universal solution to identify estimated values  should be
      adopted, taken from the ones described above (<i>or a new one I'm
        not thinking of</i><i> at this time</i>)<i>.</i><br>
    </p>
    <p>Regards,</p>
    <p>Sergio<br>
    </p>
    <p>[1]
      <a class="moz-txt-link-freetext" href="https://taginfo.openstreetmap.org/tags/source%3Aheight=estimated">https://taginfo.openstreetmap.org/tags/source%3Aheight=estimated</a><br>
      [2]
      <a class="moz-txt-link-freetext" href="https://taginfo.openstreetmap.org/tags/height%3Asource=estimated">https://taginfo.openstreetmap.org/tags/height%3Asource=estimated</a></p>
    <p><br>
    </p>
    <div class="moz-cite-prefix">On 2018-11-11 10:07, bkil wrote:<br>
    </div>
    <blockquote type="cite"
cite="mid:CAPuHQ=GKRgA0miZ1dYrK_-Jih68Z=BwHyn9G4w7cDo4oSUa76w@mail.gmail.com">
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      <div dir="ltr">Yes, that sounds reasonable. Also there's
        height:accuracy if you know your error.</div>
      <br>
      <div class="gmail_quote">
        <div dir="ltr">On Fri, Nov 9, 2018 at 11:42 AM Dave Swarthout
          <<a href="mailto:daveswarthout@gmail.com"
            moz-do-not-send="true">daveswarthout@gmail.com</a>>
          wrote:<br>
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          .8ex;border-left:1px #ccc solid;padding-left:1ex">
          <div dir="ltr">
            <div>You can also use height=* for both and add a
              "source:height=estimated / measured" tag with that to have
              a value that is usable by the apps and tools but still
              keeping the information that it was only estimated ! ;-)</div>
            <div><br>
            </div>
            <div>An excellent solution, Lionel<br>
            </div>
          </div>
          <br>
          <div class="gmail_quote">
            <div dir="ltr">On Fri, Nov 9, 2018 at 5:06 PM marc marc <<a
                href="mailto:marc_marc_irc@hotmail.com" target="_blank"
                moz-do-not-send="true">marc_marc_irc@hotmail.com</a>>
              wrote:<br>
            </div>
            <blockquote class="gmail_quote" style="margin:0 0 0
              .8ex;border-left:1px #ccc solid;padding-left:1ex">look at
              the current values in height, you understand from their<br>
              round values that they are massively estimated.<br>
              <br>
              my preference is therefore to use height and make 2
              changset<br>
              to put a changeset tag related to the source<br>
              of the measurement: measured <> estimated<br>
              <br>
              Le 09. 11. 18 à 10:57, Lionel Giard a écrit :<br>
              > You can also use height=* for both and add a
              "souce:height=estimated / <br>
              > measured" tag with that to have a value that is
              usable by the apps and <br>
              > tools but still keeping the information that it was
              only estimated ! ;-)<br>
              > <br>
              > <br>
              > Lionel<br>
              > <br>
              > <br>
              > <br>
              > Le ven. 9 nov. 2018 à 10:19, Dave Swarthout <<a
                href="mailto:daveswarthout@gmail.com" target="_blank"
                moz-do-not-send="true">daveswarthout@gmail.com</a> <br>
              > <mailto:<a href="mailto:daveswarthout@gmail.com"
                target="_blank" moz-do-not-send="true">daveswarthout@gmail.com</a>>>
              a écrit :<br>
              > <br>
              >     There is already an est_width tag (Taginfo
              77,000). I see no reason<br>
              >     why you couldn't use est_height, which has over
              1000 instances in<br>
              >     Taginfo.<br>
              > <br>
              >     Dave<br>
              > <br>
              >     On Fri, Nov 9, 2018 at 3:58 PM Cascafico Giovanni<br>
              >     <<a href="mailto:cascafico@gmail.com"
                target="_blank" moz-do-not-send="true">cascafico@gmail.com</a>
              <mailto:<a href="mailto:cascafico@gmail.com"
                target="_blank" moz-do-not-send="true">cascafico@gmail.com</a>>>
              wrote:<br>
              > <br>
              >         I'm going to import a small dataset of trees.
              Some tree heights<br>
              >         are defined as "measured", some as
              "estimated".<br>
              > <br>
              >         About estimated values, I've found a wiki
              definition only for<br>
              >         width [1]: shall I<br>
              >         derive an est_height tag,<br>
              >         go for most popular taginfo solutions,<br>
              >         simply assign an estimated value to height
              tag?<br>
              > <br>
              > <br>
              > <br>
              >         [1] <a
                href="https://wiki.openstreetmap.org/wiki/Key:est_width"
                rel="noreferrer" target="_blank" moz-do-not-send="true">https://wiki.openstreetmap.org/wiki/Key:est_width</a><br>
              >       
               _______________________________________________<br>
              >         Tagging mailing list<br>
              >         <a href="mailto:Tagging@openstreetmap.org"
                target="_blank" moz-do-not-send="true">Tagging@openstreetmap.org</a>
              <mailto:<a href="mailto:Tagging@openstreetmap.org"
                target="_blank" moz-do-not-send="true">Tagging@openstreetmap.org</a>><br>
              >         <a
                href="https://lists.openstreetmap.org/listinfo/tagging"
                rel="noreferrer" target="_blank" moz-do-not-send="true">https://lists.openstreetmap.org/listinfo/tagging</a><br>
              > <br>
              > <br>
              > <br>
              >     -- <br>
              >     Dave Swarthout<br>
              >     Homer, Alaska<br>
              >     Chiang Mai, Thailand<br>
              >     Travel Blog at <a
                href="http://dswarthout.blogspot.com" rel="noreferrer"
                target="_blank" moz-do-not-send="true">http://dswarthout.blogspot.com</a><br>
              >     _______________________________________________<br>
              >     Tagging mailing list<br>
              >     <a href="mailto:Tagging@openstreetmap.org"
                target="_blank" moz-do-not-send="true">Tagging@openstreetmap.org</a>
              <mailto:<a href="mailto:Tagging@openstreetmap.org"
                target="_blank" moz-do-not-send="true">Tagging@openstreetmap.org</a>><br>
              >     <a
                href="https://lists.openstreetmap.org/listinfo/tagging"
                rel="noreferrer" target="_blank" moz-do-not-send="true">https://lists.openstreetmap.org/listinfo/tagging</a><br>
              > <br>
              > <br>
              > <br>
              > _______________________________________________<br>
              > Tagging mailing list<br>
              > <a href="mailto:Tagging@openstreetmap.org"
                target="_blank" moz-do-not-send="true">Tagging@openstreetmap.org</a><br>
              > <a
                href="https://lists.openstreetmap.org/listinfo/tagging"
                rel="noreferrer" target="_blank" moz-do-not-send="true">https://lists.openstreetmap.org/listinfo/tagging</a><br>
              > <br>
              <br>
              _______________________________________________<br>
              Tagging mailing list<br>
              <a href="mailto:Tagging@openstreetmap.org" target="_blank"
                moz-do-not-send="true">Tagging@openstreetmap.org</a><br>
              <a href="https://lists.openstreetmap.org/listinfo/tagging"
                rel="noreferrer" target="_blank" moz-do-not-send="true">https://lists.openstreetmap.org/listinfo/tagging</a><br>
            </blockquote>
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          <br>
          -- <br>
          <div dir="ltr" class="m_1701452430438991771gmail_signature"
            data-smartmail="gmail_signature">
            <div dir="ltr">Dave Swarthout<br>
              Homer, Alaska<br>
              Chiang Mai, Thailand<br>
              Travel Blog at <a href="http://dswarthout.blogspot.com"
                target="_blank" moz-do-not-send="true">http://dswarthout.blogspot.com</a></div>
          </div>
          _______________________________________________<br>
          Tagging mailing list<br>
          <a href="mailto:Tagging@openstreetmap.org" target="_blank"
            moz-do-not-send="true">Tagging@openstreetmap.org</a><br>
          <a href="https://lists.openstreetmap.org/listinfo/tagging"
            rel="noreferrer" target="_blank" moz-do-not-send="true">https://lists.openstreetmap.org/listinfo/tagging</a><br>
        </blockquote>
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      <pre class="moz-quote-pre" wrap="">_______________________________________________
Tagging mailing list
<a class="moz-txt-link-abbreviated" href="mailto:Tagging@openstreetmap.org">Tagging@openstreetmap.org</a>
<a class="moz-txt-link-freetext" href="https://lists.openstreetmap.org/listinfo/tagging">https://lists.openstreetmap.org/listinfo/tagging</a>
</pre>
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