<html><head></head><body><div style="color:#000; background-color:#fff; font-family:verdana, helvetica, sans-serif;font-size:13px"><div dir="ltr" id="yui_3_16_0_ym19_1_1501510716722_398579">I did not say to create "virtual roads" but to interpret the imagery in a specific context, here rural area in a semi-artic region with no road infrastructures like paved roads or gravel roads going to the small villages. We have to interpret the traces on the sand. At the rainy season, cattle, people walking and cars leave traces in all directions.</div><div dir="ltr" id="yui_3_16_0_ym19_1_1501510716722_398578"><br></div><div id="yui_3_16_0_ym19_1_1501510716722_398497">It is yes difficult to interpret in such areas and this is a challenge to provide significant infos about the road network. <br></div><div id="yui_3_16_0_ym19_1_1501510716722_397979"><br></div><div dir="ltr" id="yui_3_16_0_ym19_1_1501510716722_397998">We often see that too many highway=unclassified are traced in parallel going from village A to village B.<br></div><br><div dir="ltr" id="yui_3_16_0_ym19_1_1501510716722_398093"><span id="yui_3_16_0_ym19_1_1501510716722_398152">Your answer is too short saying do not connect A and B.<br></span></div><div dir="ltr" id="yui_3_16_0_ym19_1_1501510716722_398383"><span id="yui_3_16_0_ym19_1_1501510716722_398152"><br></span></div><div dir="ltr" id="yui_3_16_0_ym19_1_1501510716722_398382"><span id="yui_3_16_0_ym19_1_1501510716722_398152">In the case of this specific village, Mulla, which ways would you keep as highway=unclassified?</span></div><div dir="ltr" id="yui_3_16_0_ym19_1_1501510716722_398171"><span id="yui_3_16_0_ym19_1_1501510716722_398152">If you keep one from the north, one from the south, would you say that this is impossible that a car goes through the village to move from the north way to the south way ? <br></span></div><div dir="ltr" id="yui_3_16_0_ym19_1_1501510716722_398793"><span id="yui_3_16_0_ym19_1_1501510716722_398152"><br></span></div><div dir="ltr" id="yui_3_16_0_ym19_1_1501510716722_398791"><span id="yui_3_16_0_ym19_1_1501510716722_398152">What is virtual, what is the reality in such a context? :-)</span></div><div id="yui_3_16_0_ym19_1_1501510716722_397779"> </div><div class="signature" id="yui_3_16_0_ym19_1_1501510716722_397775"><span style="font-style:italic;color:rgb(0, 0, 191);font-weight:bold;"> <br><font face="garamond, new york, times, serif">Pierre </font><br></span></div><div class="qtdSeparateBR" id="yui_3_16_0_ym19_1_1501510716722_397793"><br><br></div><div class="yahoo_quoted" id="yui_3_16_0_ym19_1_1501510716722_397783" style="display: block;"> <div style="font-family: verdana, helvetica, sans-serif; font-size: 13px;" id="yui_3_16_0_ym19_1_1501510716722_397782"> <div style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, linéale; font-size: 16px;" id="yui_3_16_0_ym19_1_1501510716722_397781"> <div dir="ltr" id="yui_3_16_0_ym19_1_1501510716722_397780"> <font id="yui_3_16_0_ym19_1_1501510716722_397784" face="Arial" size="2"> <hr size="1"> <b><span style="font-weight:bold;">De :</span></b> john whelan <jwhelan0112@gmail.com><br> <b><span style="font-weight: bold;">À :</span></b> Vao Matua <vaomatua@gmail.com> <br><b><span style="font-weight: bold;">Cc :</span></b> hot@openstreetmap.org<br> <b><span style="font-weight: bold;">Envoyé le :</span></b> lundi 31 juillet 2017 16h07<br> <b><span style="font-weight: bold;">Objet :</span></b> Re: [HOT] landuse=residential and routing problems<br> </font> </div> <div class="y_msg_container" id="yui_3_16_0_ym19_1_1501510716722_397785"><br><div id="yiv3559085094"><div id="yui_3_16_0_ym19_1_1501510716722_397789"><div id="yui_3_16_0_ym19_1_1501510716722_397788">Echoing Pierre's comments should we come up with better instructions? I think the requirements for the NGOs are where do people live and how do we get there?<div id="yui_3_16_0_ym19_1_1501510716722_397821"><br clear="none"></div><div id="yui_3_16_0_ym19_1_1501510716722_397790">Which suggests we want the settlements and a highway to reach them.</div><div id="yui_3_16_0_ym19_1_1501510716722_397791"><br clear="none"></div><div>This is probably different to normal OSM which sometimes seems to be map everything in sight.</div><div><br clear="none"></div><div>Personally I think there are two styles of mapping a settlement. One tightly maps round the buildings the other is looser in nature and maps groups of buildings more loosely. Both have advantages. Tight mapping means you can get a rough approximation of population without mapping every building.</div><div><br clear="none"></div><div>Mapping fewer highways would let us cover a larger area for the same amount of effort but how to describe the optimum mix is difficult.</div><div><br clear="none"></div><div>Cheerio John</div></div><div class="yiv3559085094gmail_extra"><br clear="none"><div class="yiv3559085094gmail_quote">On 31 Jul 2017 3:40 pm, "Vao Matua" <<a rel="nofollow" shape="rect" ymailto="mailto:vaomatua@gmail.com" target="_blank" href="mailto:vaomatua@gmail.com">vaomatua@gmail.com</a>> wrote:<br clear="none"><blockquote class="yiv3559085094gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;"><div dir="ltr">Interesting situation Marco, one I've often seen in Ethiopia.<div>I would suggest that creating "virtual" roads is not a good idea.</div><div><br clear="none"></div><div>The purpose of routing software is to help someone navigate the real world. If someone were to try to drive an imaginary route it would cause problems. Additionally I find it hard to imagine a scenario where someone would use a routing app to go 100 meters through a village.</div><div><br clear="none"></div><div>The paths you have mapped are fine, but the key thing is to map the route to the next village or highway=unclassified+.</div><div><br clear="none"></div><div>Emmor</div></div><div class="yiv3559085094gmail_extra"><br clear="none"><div class="yiv3559085094gmail_quote">On Mon, Jul 31, 2017 at 10:22 AM, mbranco2 <span dir="ltr"><<a rel="nofollow" shape="rect" ymailto="mailto:mbranco2@gmail.com" target="_blank" href="mailto:mbranco2@gmail.com">mbranco2@gmail.com</a>></span> wrote:<br clear="none"><blockquote class="yiv3559085094gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;"><div dir="ltr"><div>Thank you all for your answers, and for your hints not to map too much detailed.</div><div><br clear="none"></div><div>For my question, the key seems to be: "roads must share a node to let the routing software calculate...".</div><div><br clear="none"></div><div>A lot of times I find situations like this one [1]: there are no roads connecting the highway from NW and the highway from SE, but I think routing sw must know the two highways are connectable...</div><div><br clear="none"></div><div>So, I'm undestanding that sometimes it could be necessary to draw "virtual" roads around or inside a village, to connect between them several external roads (of course, if it seems appropriate, looking at the aerial images).</div><div>If so, maybe it could be suitable to put a note (if not a specific tag), indicating that segment as "virtual"?</div><div><br clear="none"></div><div>Thank you again,</div><div>Marco</div><div><br clear="none"></div><div>[1] <a rel="nofollow" shape="rect" target="_blank" href="http://www.openstreetmap.org/#map=16/12.0527/14.4386">http://www.openstreetmap.org/# map=16/12.0527/14.4386</a></div><div class="yiv3559085094gmail_extra"><br clear="none"><div class="yiv3559085094gmail_quote"><br clear="none"></div></div></div>
<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.or g/listinfo/hot</a><div class="yiv3559085094yqt5416206277" id="yiv3559085094yqtfd75077"><br clear="none">
<br clear="none"></div></blockquote></div><div class="yiv3559085094yqt5416206277" id="yiv3559085094yqtfd56806"><br clear="none"></div></div><div class="yiv3559085094yqt5416206277" id="yiv3559085094yqtfd97934">
<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">
<br clear="none"></div></blockquote></div></div></div></div><div class="yqt5416206277" id="yqtfd44282">_______________________________________________<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></div></body></html>