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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">I expect Pierre, Tim and others to send me any data they believe would be problematic. If I send them my own test dataset, it may not cover the cases they are
interested in. </span><span style="font-size:11.0pt;font-family:Wingdings;color:#1F497D">J</span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Daniel<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><b><span lang="EN-US" style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span lang="EN-US" style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> john whelan [mailto:jwhelan0112@gmail.com]
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<b>Sent:</b> Tuesday, March 19, 2019 13:32<br>
<b>To:</b> Begin Daniel<br>
<b>Cc:</b> talk-ca@openstreetmap.org<br>
<b>Subject:</b> Re: [Talk-ca] Building Import<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><span style="font-family:"Verdana","sans-serif"">It would make logical sense to preprocess all the data but then you end up with two sources. The Open Data original and the preprocessed data source.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Verdana","sans-serif""><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Verdana","sans-serif"">From a logical point of view it would make sense to use the Microsoft data to fill in the gaps. So add it into the preprocessed data.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Verdana","sans-serif"">Then you get to reality. To make it work across Canada you need to get agreement and that I think will be the most difficult part.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Verdana","sans-serif""><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Verdana","sans-serif"">Step one I think is ask Pierre nicely to review a sample and see if it meets his "quality" expectations.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Verdana","sans-serif""><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Verdana","sans-serif"">Step two would be check with Tim in Montreal for his thoughts.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Verdana","sans-serif""><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Verdana","sans-serif"">If they are both in agreement that it is acceptable then we see if we can get some sort of acceptance across the country possibly blacking out certain areas.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Verdana","sans-serif""><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Verdana","sans-serif"">If we can we'll need to go back to the import mailing list and say we wish to combine two sources and amend the plan accordingly.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Verdana","sans-serif""><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Verdana","sans-serif"">Otherwise it is up to whoever sorts out an import plan / import for a particular area to consider its use.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Verdana","sans-serif""><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Verdana","sans-serif"">Cheerio John<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">On Tue, 19 Mar 2019 at 12:59, Begin Daniel <<a href="mailto:jfd553@hotmail.com">jfd553@hotmail.com</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Hi all,<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">As mentioned a few weeks ago, I have almost completed the development of a clean-up tool for the data to be imported.<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">So far, it removes nonessential vertices, orthogonalizes building corners when reasonable and ensures walls’ alignment within given tolerances. Building footprints that can’t be
processed completely are flagged accordingly, so they could be examined thoroughly at import time.<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Eventually, It should be easy to remove overlapping buildings (potentially generated from a 3d mapping), but I doubt that splitting terrace into individual buildings can be done
automatically. <o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">The tool uses some parameters that need to be adjusted. I would like that those who are interested in this aspect of the import send me benchmark data that could be problematic.
I will process them to adjust parameters and/or the tool, and I will send back the results to the sender for a thorough examination.<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">I should soon document the process in the “Canada Building Import” wiki page (in a pre-processing section).<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Thought? Comments?<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Daniel<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
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<p class="MsoNormal">_______________________________________________<br>
Talk-ca mailing list<br>
<a href="mailto:Talk-ca@openstreetmap.org" target="_blank">Talk-ca@openstreetmap.org</a><br>
<a href="https://lists.openstreetmap.org/listinfo/talk-ca" target="_blank">https://lists.openstreetmap.org/listinfo/talk-ca</a><o:p></o:p></p>
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