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<div class="moz-cite-prefix">On 07-Apr-17 04:16 AM, Paul Desgranges
wrote:<br>
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<p>The idea of the "<a moz-do-not-send="true"
href="https://wiki.openstreetmap.org/wiki/Key:size">size</a>"
attribute was to provide the length*height*width of the
advertising device itself (without the support), while the
"height" attribute of the advertising device gave the total
height ("height above ground") of the advertising device
("Height" previously had this meaning).</p>
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An object can have a portrait aspect with the same 'size' as a
landscape aspect. So 'size' conveys less information than having
both height and width.<br>
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<p>Can we keep the "<a moz-do-not-send="true"
href="https://wiki.openstreetmap.org/wiki/Key:height">height</a>"
meaning generally speaking : "height" is "height of the
feature", but have a specific meaning of "height" for
advertising device : "height above ground" (if it is clear and
well explained in this context) ? And in that case use the
"size" attribute to provide the form factor of the advertising
device ? <br>
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No. the OSM definition of height should remain - less confusing that
way. And 'size' does not describe form factor. <br>
<br>
If you want to define the height of the support structure then do so
- make a new feature or use an old one. <br>
height:base=* for instance. This should be the height of the base
only, if the base is on top of a building then it is not the height
to the 'ground'. Think it through.<br>
<br>
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Thanks<br>
<br>
<div class="moz-cite-prefix">Le 06/04/2017 à 19:36, Martin
Koppenhoefer a écrit :<br>
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<div class="gmail_extra"><br>
<div class="gmail_quote">2017-04-06 18:35 GMT+02:00 Paul
Desgranges <span dir="ltr"><<a moz-do-not-send="true"
href="mailto:paul.desgranges@gmail.com"
target="_blank">paul.desgranges@gmail.com</a>></span>:<br>
<blockquote class="gmail_quote" style="margin:0px 0px 0px
0.8ex;border-left:1px solid
rgb(204,204,204);padding-left:1ex">If "height" is
"height of the feature" and not "height above ground",
not a problem but how can we store this second height
"height above ground" ? For example for an advertising
device , the display surface of the advertising is
supported by legs, then we need to distinguish the
height of the surface dedicated to the advertising from
the height of the device including the support. Classic
advertising billboard is 4m width * 3 m height, and is
supported on 3 m legs , therefore the total heigth is 6
m.</blockquote>
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<br>
<br>
yes, we'll need a tag for height above ground. There is
min_height, but it seems to require a building for some
strange reason, and more strangely, to redefine "height": <a
moz-do-not-send="true"
href="https://wiki.openstreetmap.org/wiki/Key:min_height">https://wiki.openstreetmap.org/wiki/Key:min_height</a><br>
<br>
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<div class="gmail_extra">it really is a pity, it is the
analogous problem of building:levels which according to the
wiki are not indicating the number of building levels but
the number of building levels plus some imaginary, non
existent building levels. It's really crazy.<br>
<br>
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<div class="gmail_extra">Cheers,<br>
</div>
<div class="gmail_extra">Martin<br>
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