<html><head></head><body><div class="ydp6ace1840yahoo-style-wrap" style="font-family: verdana, helvetica, sans-serif; font-size: 13px;"><div><div>Hi Jonah</div><div><br></div><div>I did analysis of your OSM source file as of 2019-06-12 and detected some 15,500 buildings that deviate significantly from square angles buildings. It does not mean that they do not correspond to what is observed on imagery. But with a ratio of 32% of buildings with irregular angles, it would be good to look at these and see if they should be revised.<br></div><div><br></div><div>See Geojson visualisation on Github <a href="https://github.com/opendatalabrdc/OQ_Analysis/blob/master/Geojson_Visualisation_Building_Polygons_with_Irregular_Geometry.md#2019-06-12-city-of-portsmouth-virginia-building-footprints--addresses" rel="nofollow" target="_blank">https://github.com/opendatalabrdc/OQ_Analysis/blob/master/Geojson_Visualisation_Building_Polygons_with_Irregular_Geometry.md#2019-06-12-city-of-portsmouth-virginia-building-footprints--addresses</a></div><div><br></div><div>I only answer to the import list, since I dont susbcribe to the other lists plus avoid cross-posting . <br></div><div><br></div><div class="ydp6ace1840signature"><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>
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Le samedi 15 juin 2019 18 h 28 min 08 s UTC−4, Jonah Adkins <jonahadkins@gmail.com> a écrit :
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<div><div id="ydp2a2c89e1yiv9970516239"><div>Hi Pierre, Thanks for taking a look.<div class="ydp2a2c89e1yiv9970516239"><br class="ydp2a2c89e1yiv9970516239" clear="none"></div><div class="ydp2a2c89e1yiv9970516239">The source data for this import is not AI derived - the state GIS office (VGIN) collects datasets from each city/county in Virginia, then processes them into a statewide dataset that is released (with a OSM compatible license) on a quarterly basis.</div><div class="ydp2a2c89e1yiv9970516239"><br class="ydp2a2c89e1yiv9970516239" clear="none"></div><div class="ydp2a2c89e1yiv9970516239">Was there a particular area in the full or sample OSM files that looked bad?</div><div class="ydp2a2c89e1yiv9970516239"><br class="ydp2a2c89e1yiv9970516239" clear="none"></div><div class="ydp2a2c89e1yiv9970516239">Thx</div><div class="ydp2a2c89e1yiv9970516239">-Jonah</div></div></div></div>
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