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<div class="moz-cite-prefix">On 29/06/2015 1:14 AM, Martin
Koppenhoefer wrote:<br>
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cite="mid:CABPTjTCX7A846qWQHxcxV6BtwckguvVs3ub1uwz_9_6+67M=Ow@mail.gmail.com"
type="cite">
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<div class="gmail_extra"><br>
<div class="gmail_quote">2015-06-28 14:39 GMT+02:00 Tobias
Knerr <span dir="ltr"><<a moz-do-not-send="true"
href="mailto:osm@tobias-knerr.de" target="_blank">osm@tobias-knerr.de</a>></span>:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex"><span
class="">On <a moz-do-not-send="true"
href="tel:27.06.2015%2011" value="+12706201511">27.06.2015
11</a>:19, michael spreng wrote:<br>
> This is not a tagging error.<br>
<br>
</span>It is an error. Only the underground part of the
ditch should have<br>
layer=-1, and it needs to also have a tunnel tag.<br>
<br>
As for landuse, such areas are typically non-physical, and
as such not<br>
easily inserted into the layer hierarchy. However, mappers
are using<br>
landuse far beyond its original definition, and also map
physical things<br>
such as pastures and (arguably) fields with it. At that
point, the usual<br>
layer rules need to apply.<br>
<br>
</blockquote>
<div><br>
<br>
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<div>completely agree. I had written something similar, but
accidentally the mail was only sent to Michael and not to
this list...<br>
<br>
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<br>
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<br>
My take...<br>
<br>
If lower than the 'original ground level' then layer=-1 (or more)<br>
<br>
If the 'ditch' is covered then it is a tunnel or a culvert, if there
is no 'roof' then it is a cutting. <br>
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