<html><body><div style="color:#000; background-color:#fff; font-family:verdana, helvetica, sans-serif;font-size:16px"><div id="yui_3_16_0_1_1426415340878_15333">Good idea Mike. If somebody want to look at this.</div><div id="yui_3_16_0_1_1426415340878_15332"><br></div><div id="yui_3_16_0_1_1426415340878_15331" dir="ltr">A follow-up is coming where I give instructions for the Validation step where we will enhance the map.<br></div><div id="yui_3_16_0_1_1426415340878_15330"><span></span></div><div id="yui_3_16_0_1_1426415340878_15329"> </div><div id="yui_3_16_0_1_1426415340878_15279" class="signature"><span id="yui_3_16_0_1_1426415340878_15336" style="font-style:italic;color:rgb(0, 0, 191);font-weight:bold;"> <br><font id="yui_3_16_0_1_1426415340878_15335" face="garamond, new york, times, serif">Pierre </font><br></span></div><br> <div id="yui_3_16_0_1_1426415340878_15244" style="font-family: verdana, helvetica, sans-serif; font-size: 16px;"> <div id="yui_3_16_0_1_1426415340878_15243" style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;"> <div id="yui_3_16_0_1_1426415340878_15242" dir="ltr"> <hr size="1"> <font id="yui_3_16_0_1_1426415340878_15312" size="2" face="Arial"> <b><span style="font-weight:bold;">De :</span></b> Mikel Maron <mikel.maron@gmail.com><br> <b><span style="font-weight: bold;">À :</span></b> "bgirardot@gmail.com" <bgirardot@gmail.com>; spatialbits <spatialbits@posteo.net>; "hot@openstreetmap.org" <hot@openstreetmap.org> <br> <b id="yui_3_16_0_1_1426415340878_15338"><span id="yui_3_16_0_1_1426415340878_15337" style="font-weight: bold;">Envoyé le :</span></b> Dimanche 15 mars 2015 9h12<br> <b id="yui_3_16_0_1_1426415340878_15340"><span id="yui_3_16_0_1_1426415340878_15339" style="font-weight: bold;">Objet :</span></b> Re: [HOT] Identification of Communication towers<br> </font> </div> <div id="yui_3_16_0_1_1426415340878_15313" class="y_msg_container"><br><div id="yiv8257907109"><div id="yui_3_16_0_1_1426415340878_15315"><div id="yui_3_16_0_1_1426415340878_15314" style="color:#000;background-color:#fff;font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:16px;"><div dir="ltr" id="yiv8257907109yui_3_16_0_1_1426424644358_15265"><span id="yiv8257907109yui_3_16_0_1_1426424644358_15288">We could make a quick tracing guide for these towers. Just need a few clipped screenshots of the imagery, and help text. </span></div><div dir="ltr" id="yiv8257907109yui_3_16_0_1_1426424644358_15265"><span><br clear="none"></span></div><div dir="ltr" id="yiv8257907109yui_3_16_0_1_1426424644358_15265"><span id="yiv8257907109yui_3_16_0_1_1426424644358_16743">Would put it together in something like this: </span></div><div dir="ltr" id="yiv8257907109yui_3_16_0_1_1426424644358_15265"><a rel="nofollow" shape="rect" id="yiv8257907109yui_3_16_0_1_1426424644358_16848" target="_blank" href="http://hotosm.github.io/tracing-guides/guide/kulna.html">http://hotosm.github.io/tracing-guides/guide/kulna.html</a></div><div dir="ltr" id="yiv8257907109yui_3_16_0_1_1426424644358_15265"><span id="yiv8257907109yui_3_16_0_1_1426424644358_16197"><a rel="nofollow" shape="rect" id="yiv8257907109yui_3_16_0_1_1426424644358_16196" target="_blank" href="http://hotosm.github.io/tracing-guides/">http://hotosm.github.io/tracing-guides/</a><br clear="none"></span></div><div></div><div id="yiv8257907109yui_3_16_0_1_1426424644358_16189"> </div><div dir="ltr" id="yiv8257907109yui_3_16_0_1_1426424644358_16189">-Mikel</div><div dir="ltr" id="yiv8257907109yui_3_16_0_1_1426424644358_16189"><br clear="none"></div><div id="yiv8257907109yui_3_16_0_1_1426424644358_16191"><div id="yiv8257907109yui_3_16_0_1_1426424644358_16190">* Mikel Maron * +14152835207 @mikel s:mikelmaron</div></div> <br clear="none"><div class="yiv8257907109qtdSeparateBR"><br clear="none"><br clear="none"></div><div class="yiv8257907109yqt1908987843" id="yiv8257907109yqt34887"><div class="yiv8257907109yahoo_quoted" style="display:block;"> <div style="font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:16px;"> <div style="font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:16px;"> <div dir="ltr"> <font size="2" face="Arial"> On Sunday, March 15, 2015 9:03 AM, Blake Girardot <bgirardot@gmail.com> wrote:<br clear="none"> </font> </div> <blockquote style="border-left:2px solid rgb(16, 16, 255);margin-left:5px;margin-top:5px;padding-left:5px;"> <br clear="none"><br clear="none"> <div class="yiv8257907109y_msg_container"><br clear="none">Hi Martin,<br clear="none"><br clear="none">These are challenging to spot and hard to tag correctly without local <br clear="none">knowledge I just discovered.<br clear="none"><br clear="none"><a rel="nofollow" shape="rect" target="_blank" href="http://wiki.openstreetmap.org/wiki/Tag:man_made%3Dcommunications_tower">http://wiki.openstreetmap.org/wiki/Tag:man_made%3Dcommunications_tower</a><br clear="none"><br clear="none">I usually find towers by seeing the shadow they cast, that is the big <br clear="none">indicator to me.<br clear="none"><br clear="none">Here are a few examples in the region:<br clear="none"><br clear="none"><a rel="nofollow" shape="rect" target="_blank" href="https://www.openstreetmap.org/#map=19/-21.90198/166.072485">https://www.openstreetmap.org/#map=19/-21.90198/166.072485</a><br clear="none"><br clear="none">If you look very carefully at the shadow you can see the microwave <br clear="none">transceiver drums in the shadow. I would guess that is what helped the <br clear="none">person identify this one as a "communications" tower specifically.<br clear="none"><br clear="none">----------------------------<br clear="none"><br clear="none"><a rel="nofollow" shape="rect" target="_blank" href="https://www.openstreetmap.org/#map=19/-20.748846/167.262194">https://www.openstreetmap.org/#map=19/-20.748846/167.262194</a><br clear="none"><br clear="none">That one again, shows the shadow being a pretty big factor. And it also <br clear="none">show a typical service road and pad. I do not know how the mapper knew <br clear="none">it was a communications tower.<br clear="none"><br clear="none">------------------------------<br clear="none"><br clear="none"><a rel="nofollow" shape="rect" target="_blank" href="https://www.openstreetmap.org/#map=19/14.977132/120.52743">https://www.openstreetmap.org/#map=19/14.977132/120.52743</a><br clear="none"><br clear="none">Shadow and microwave drums visible<br clear="none"><br clear="none">-----------------------------------<br clear="none"><br clear="none"><a rel="nofollow" shape="rect" target="_blank" href="https://www.openstreetmap.org/#map=20/15.011183/120.532604">https://www.openstreetmap.org/#map=20/15.011183/120.532604</a><br clear="none"><br clear="none">Shadow and service area fenced off.<br clear="none"><br clear="none">----------------------------------<br clear="none"><br clear="none"><a rel="nofollow" shape="rect" target="_blank" href="https://www.openstreetmap.org/#map=19/15.097711/120.611481">https://www.openstreetmap.org/#map=19/15.097711/120.611481</a><br clear="none"><br clear="none">A nice big TV transmission tower.<br clear="none"><br clear="none"><br clear="none">I hope those help!<br clear="none"><br clear="none">Cheers,<br clear="none">Blake<br clear="none"><br clear="none"><br clear="none"><br clear="none">On 3/15/2015 11:37 AM, spatialbits wrote:<br clear="none">> Hi hotties,<br clear="none">><br clear="none">> as part of tasks #944/943 (Vanuatu) mapping of Communication towers is<br clear="none">> requested.<br clear="none">> Could someone point me to an example in the imagery (e.g. lat/lon), so I<br clear="none">> get an idea on what to look for.<br clear="none">><br clear="none">> Thanks.<br clear="none">><br clear="none">> Martin<br clear="none">><br clear="none">> _______________________________________________<br clear="none">> HOT mailing list<br clear="none">> <a rel="nofollow" shape="rect" ymailto="mailto:HOT@openstreetmap.org" target="_blank" href="mailto:HOT@openstreetmap.org">HOT@openstreetmap.org</a><br clear="none">> <a rel="nofollow" shape="rect" target="_blank" href="https://lists.openstreetmap.org/listinfo/hot">https://lists.openstreetmap.org/listinfo/hot</a><div class="yiv8257907109yqt1424629794" id="yiv8257907109yqtfd58528"><br clear="none">><br clear="none"><br clear="none">_______________________________________________<br clear="none">HOT mailing list<br clear="none"><a rel="nofollow" shape="rect" ymailto="mailto:HOT@openstreetmap.org" target="_blank" href="mailto:HOT@openstreetmap.org">HOT@openstreetmap.org</a><br clear="none"><a rel="nofollow" shape="rect" target="_blank" href="https://lists.openstreetmap.org/listinfo/hot">https://lists.openstreetmap.org/listinfo/hot</a><br clear="none"></div><br clear="none"><br clear="none"></div> </blockquote> </div> </div> </div></div></div></div></div><br><div class="yqt1908987843" id="yqt07331">_______________________________________________<br clear="none">HOT mailing list<br clear="none"><a shape="rect" ymailto="mailto:HOT@openstreetmap.org" href="mailto:HOT@openstreetmap.org">HOT@openstreetmap.org</a><br clear="none"><a shape="rect" href="https://lists.openstreetmap.org/listinfo/hot" target="_blank">https://lists.openstreetmap.org/listinfo/hot</a><br clear="none"></div><br><br></div> </div> </div> </div></body></html>