<div dir="ltr"><div class="gmail_extra"><br><div class="gmail_quote">2017-03-27 11:56 GMT+02:00 Jean-Marc Liotier <span dir="ltr"><<a href="mailto:jm@liotier.org" target="_blank">jm@liotier.org</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"><div id="gmail-:1b7" class="gmail-a3s gmail-aXjCH gmail-m15b0f350b06c40fb">And while we're at it, the next most frequent building tagging mistake:<br>
outlining the building on orbital imagery at roof level instead of base<br>
level... Explaining that pictures are not always taken from the<br>
vertical usually drives the point home.</div></blockquote></div><br><br></div><div class="gmail_extra">btw., there is an extensive article about this, with many examples, in the wiki here:<br><a href="https://wiki.openstreetmap.org/wiki/Roof_modelling">https://wiki.openstreetmap.org/wiki/Roof_modelling</a><br><br></div><div class="gmail_extra">Cheers,<br></div><div class="gmail_extra">Martin<br></div></div>