<div dir="ltr"><div class="gmail_extra"><div class="gmail_quote">On Thu, Apr 23, 2015 at 3:05 PM, Lester Caine <span dir="ltr"><<a href="mailto:lester@lsces.co.uk" target="_blank">lester@lsces.co.uk</a>></span> wrote:<blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex">
tag -> disposal_point<br>
<br>
Values<br>
pump_out:grey (No sewage)<br>
pump_out:black (Contains Sewage)<br>
pump_out:bilge (May contain oil)<br>
pump_out:restricted (note advise restrictions)<br>
dump:black (may have restrictions?)<br>
chemical:contained (cartridge style disposal)<br>
chemical:clean_down ('wet' disposal with clean down facility)<br>
chemical:gel_only (may be other restrictions depending on country?)<br>
<br>
Access<br>
clients_only (marina or campsite or leisure facility clients)<br>
public_free (council provided facility?)<br>
public_fee:rates (see debate in Oz about lack of public<br>
facilities even if they paid for access)<br>
LOCATION should show if it's private access to boats or other vehicles<br>
Payment methods or private access also expand the data.</blockquote><div><br></div><div><br></div><div>Ok, so if understand, in that proposal a UK canal "waterway=elsan_point" might be re-tagged like:</div><div><br></div></div></div><blockquote style="margin:0px 0px 0px 40px;border:none;padding:0px"><div class="gmail_extra"><div class="gmail_quote"><div><i>disposal_point=yes</i></div></div></div></blockquote><blockquote style="margin:0px 0px 0px 40px;border:none;padding:0px"><div class="gmail_extra"><div class="gmail_quote"><div><i>chemical:contained=yes<br>chemical:clean_down=yes<br></i></div><div><i>chemical:gel_only=no<br></i></div><div><i>chemical:restrictions=uses a septic field, and only biodegradable tank chemicals are allowed.</i><i><br></i></div></div></div></blockquote><blockquote style="margin:0px 0px 0px 40px;border:none;padding:0px"><div class="gmail_extra"><div class="gmail_quote"><div><i>access=</i>public_fee:rates<br></div></div></div></blockquote><blockquote style="margin:0px 0px 0px 40px;border:none;padding:0px"><div class="gmail_extra"><div class="gmail_quote"><div><i>boat=yes</i></div></div></div><div class="gmail_extra"><div class="gmail_quote"><div><i>motorhome=no</i></div><div><blockquote style="margin:0px 0px 0px 40px;border:none;padding:0px"><div class="gmail_extra"><div class="gmail_quote"><br></div></div></blockquote></div></div></div></blockquote><div class="gmail_extra"><div class="gmail_quote"><div><div class="gmail_extra"><div class="gmail_quote">Perhaps next to a:</div></div></div></div></div><blockquote style="margin:0px 0px 0px 40px;border:none;padding:0px"><div class="gmail_extra"><div class="gmail_quote"><blockquote style="margin:0px 0px 0px 40px;border:none;padding:0px"><div class="gmail_extra"><div class="gmail_quote"><br></div></div></blockquote></div></div></blockquote><blockquote style="margin:0px 0px 0px 40px;border:none;padding:0px"><div class="gmail_extra"><div class="gmail_quote"><div><i>water_point=yes</i></div></div></div><div class="gmail_extra"><div class="gmail_quote"><div><i>access=public_free</i></div></div></div></blockquote><blockquote style="margin:0px 0px 0px 40px;border:none;padding:0px"><div class="gmail_extra"><div class="gmail_quote"><i>boat=yes</i><br><div class="gmail_extra"><div class="gmail_quote"><div class="gmail_extra"><div class="gmail_quote"><i>motorhome=no</i><i><br></i></div></div></div></div></div></div></blockquote><blockquote style="margin:0px 0px 0px 40px;border:none;padding:0px"><div class="gmail_extra"><div class="gmail_quote"><div><blockquote style="margin:0px 0px 0px 40px;border:none;padding:0px"><div class="gmail_extra"><div class="gmail_quote"></div></div></blockquote></div></div></div></blockquote><blockquote style="margin:0px 0px 0px 40px;border:none;padding:0px"><div class="gmail_extra"><div class="gmail_quote"><div><br></div></div></div></blockquote>Where the boat=yes motorhome=no tag could exist on an enclosing way such as a Marina.<br><blockquote style="margin:0px 0px 0px 40px;border:none;padding:0px"><div class="gmail_extra"><div class="gmail_quote"><div><br></div><div>-------------------------------------------------------------------</div><div><br></div></div></div></blockquote><div class="gmail_extra"><div class="gmail_quote"><div>I see the issue as centered on complexity, mapper behavior, and rendering/searching behavior.</div><div>The system depends on two types of access : legal permission and physical access. A marine</div><div>site may only be accessible to boat, or free and public but only welcome marine users. That subtlety will likely </div><div>be lost in rendering or gps searching, leading people to an inappropriate facility. The reality is that</div><div>top level tags are what controls most searching and rendering.</div><div><br></div><div>The tags boat=yes and motorhome=no are not universally processed by rendering. Thus most</div><div>of the time the feature will show up undifferentiated.</div><div><br></div><div><br></div><div><b>OpenSeaMap</b> has chosen to use it's own tags in part to avoid motorhome features showing up</div><div>on Mariner's map. This allows ready and reliable creation of a mariner's map (or in this case a UK</div><div>waterway map). The cost of a new high level tag seems small compared to the benefits. The toilet</div><div>stations I map will be with something simpler.</div></div></div></div>