<html><head></head><body><div class="ydpc67a7f06yahoo-style-wrap" style="font-family: verdana, helvetica, sans-serif; font-size: 13px;"><div><div>Salut John,</div><div><br></div><div>Voici les résultats d'analyse de géométrie des bâtiments pour Ottawa centre-ville.</div><div>bbox : <span>45.4224,-75.6994,45.4568,-75.6122</span></div><div><span></span><br></div><div>- 20,372 Bâtiments<br></div><div><span><div>- 173 Bâtiments avec superposition (0.1%)<br></div></span><div>- 11,534 Bâtiments avec formes irrégulières (56.6%)<br></div><div><br></div><div>Nous avons donc un résultat semblable aux imports en Ontario que j'ai analysé il y quelques jours. A mon avis, en haut de 5%, il faut regarder de plus près et expliquer pourquoi autant de formes irrégulières.<br></div><div><br></div><div class="ydpc67a7f06signature"><div>J'ai créé des Requêtes overpass pour extraire les bâtiments identifiés dans l'analyse. Télécharger les requêtes à partir des fichiers ci-joints.<span style="font-style:italic;color:rgb(0, 0, 191);font-weight:bold;"> </span></div><div><span style="font-style:italic;color:rgb(0, 0, 191);font-weight:bold;"></span><br></div><div><br></div><span style="font-style:italic;color:rgb(0, 0, 191);font-weight:bold;"><font face="garamond, new york, times, serif">Pierre </font><br></span></div></div><div><span>
<div><br></div></span><br></div><div>173 Batiments avec superposition<br></div><div><div>Req Overpass voir</div><div><a href="https://www.dropbox.com/s/fp1cimouhhfbm9s/on_Ottawa_centre_2019-01-31_batiments_superposes_OSM_req_Overpass.txt?dl=0" rel="nofollow" target="_blank" class="">https://www.dropbox.com/s/fp1cimouhhfbm9s/on_Ottawa_centre_2019-01-31_batiments_superposes_OSM_req_Overpass.txt?dl=0</a></div><div><br></div><div><br></div><span></span><div><span><span><div>11,534 Bâtiments avec formes irrégulières (56.6%)<br></div></span></span><div><div><span>Req Overpass voir</span></div><div><span> <a href="https://www.dropbox.com/s/c68nb9dbudtp679/on_Ottawa_centre_2019-01-31_batiments_irreg_OSM_req_Overpass.txt?dl=0" rel="nofollow" target="_blank" class="">https://www.dropbox.com/s/c68nb9dbudtp679/on_Ottawa_centre_2019-01-31_batiments_irreg_OSM_req_Overpass.txt?dl=0</a></span></div><div><br></div><div><br></div><div><br></div></div><div><span><br></span></div><span><br></span><br></div><div>-------------------------------------------------------------------------------------<br></div></div></div><div><br></div>
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Le lundi 28 janvier 2019 09 h 17 min 37 s HNE, john whelan <jwhelan0112@gmail.com> a écrit :
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<div><div id="ydpafd1baeyiv1277836031"><div><div dir="ltr"><div class="ydpafd1baeyiv1277836031gmail_default" style="font-family:verdana, sans-serif;font-size:small;">Interesting, although I'm not sure what the best approach is. </div><div class="ydpafd1baeyiv1277836031gmail_default" style="font-family:verdana, sans-serif;font-size:small;"><br clear="none"></div><div class="ydpafd1baeyiv1277836031gmail_default" style="font-family:verdana, sans-serif;font-size:small;">31 Hamilton is interesting. If you look at the buildings next to it they don't have house numbers. Look at the history and you'll see it was first created in 2010 with potlatch and edited once more in 2011.</div><div class="ydpafd1baeyiv1277836031gmail_default" style="font-family:verdana, sans-serif;font-size:small;"><br clear="none"></div><div class="ydpafd1baeyiv1277836031gmail_default" style="font-family:verdana, sans-serif;font-size:small;">At my first glance at Kingston the small deviations form 90 degrees did not stand out. </div><div class="ydpafd1baeyiv1277836031gmail_default" style="font-family:verdana, sans-serif;font-size:small;"><br clear="none"></div><div class="ydpafd1baeyiv1277836031gmail_default" style="font-family:verdana, sans-serif;font-size:small;">I think we can reasonably expect Microsoft to create a Canadian buildings file and you seem to be comfortable that the ones it has in the US are of a reasonable standard.</div><div class="ydpafd1baeyiv1277836031gmail_default" style="font-family:verdana, sans-serif;font-size:small;"><br clear="none"></div><div class="ydpafd1baeyiv1277836031gmail_default" style="font-family:verdana, sans-serif;font-size:small;">Part of my background is large databases and my personal view is the minimum data needed the faster the system runs and less data needs to get flipped round and backed up.</div><div class="ydpafd1baeyiv1277836031gmail_default" style="font-family:verdana, sans-serif;font-size:small;"><br clear="none"></div><div class="ydpafd1baeyiv1277836031gmail_default" style="font-family:verdana, sans-serif;font-size:small;">Could you run the analysis over Ottawa?</div><div class="ydpafd1baeyiv1277836031gmail_default" style="font-family:verdana, sans-serif;font-size:small;"><br clear="none"></div><div class="ydpafd1baeyiv1277836031gmail_default" style="font-family:verdana, sans-serif;font-size:small;">Looking closely at a few in Ottawa I note that there are some bay windows and other small features I might not have bothered with if mapping with JOSM with the buildings_tool. Because of a few 45 degree angles involved this isn't something that can be easily solved.</div><div class="ydpafd1baeyiv1277836031gmail_default" style="font-family:verdana, sans-serif;font-size:small;"><br clear="none"></div><div class="ydpafd1baeyiv1277836031gmail_default" style="font-family:verdana, sans-serif;font-size:small;">Ottawa I think at some level can be considered a reasonable success. Certainly we added a lot of extra information to the building outlines.</div><div class="ydpafd1baeyiv1277836031gmail_default" style="font-family:verdana, sans-serif;font-size:small;"><br clear="none"></div><div class="ydpafd1baeyiv1277836031gmail_default" style="font-family:verdana, sans-serif;font-size:small;">I think the trade off is using the municipal data gives us the buildings with perhaps more detail than I might like but many would like to see the buildings imported.</div><div class="ydpafd1baeyiv1277836031gmail_default" style="font-family:verdana, sans-serif;font-size:small;"><br clear="none"></div><div class="ydpafd1baeyiv1277836031gmail_default" style="font-family:verdana, sans-serif;font-size:small;">Dunno (Do not know for translate tools.)</div><div class="ydpafd1baeyiv1277836031gmail_default" style="font-family:verdana, sans-serif;font-size:small;"><br clear="none"></div><div class="ydpafd1baeyiv1277836031gmail_default" style="font-family:verdana, sans-serif;font-size:small;">What is the ideal building outline in OpenStreetMap?</div><div class="ydpafd1baeyiv1277836031gmail_default" style="font-family:verdana, sans-serif;font-size:small;"><br clear="none"></div><div class="ydpafd1baeyiv1277836031gmail_default" style="font-family:verdana, sans-serif;font-size:small;">What is an acceptable building outline in OpenStreetMap? <br clear="none"></div><div class="ydpafd1baeyiv1277836031gmail_default" style="font-family:verdana, sans-serif;font-size:small;"><br clear="none"></div><div class="ydpafd1baeyiv1277836031gmail_default" style="font-family:verdana, sans-serif;font-size:small;">Suggestions</div><div class="ydpafd1baeyiv1277836031gmail_default" style="font-family:verdana, sans-serif;font-size:small;"><br clear="none"></div><div class="ydpafd1baeyiv1277836031gmail_default" style="font-family:verdana, sans-serif;font-size:small;">Thanks</div><div class="ydpafd1baeyiv1277836031gmail_default" style="font-family:verdana, sans-serif;font-size:small;"><br clear="none"></div><div class="ydpafd1baeyiv1277836031gmail_default" style="font-family:verdana, sans-serif;font-size:small;">Cheerio John</div></div><br><div class="ydpafd1baeyiv1277836031gmail_quote"><blockquote class="ydpafd1baeyiv1277836031gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex;"><div><div class="ydpafd1baeyiv1277836031gmail-m_5269169313036325482ydp842d0bd5yiv7713919613yqt4382069100" id="ydpafd1baeyiv1277836031gmail-m_5269169313036325482ydp842d0bd5yiv7713919613yqtfd02950">
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