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--></style></head><body lang=EN-GB link=blue vlink="#954F72"><div class=WordSection1><p class=MsoNormal><span lang=NO-BOK>John,<o:p></o:p></span></p><p class=MsoNormal>yes, the buildings in Africa are really messed up. But yet, they are there in contrast to some largest digital map-makers. Just take a look on some examples like here <span lang=EN style='font-size:10.0pt;font-family:Roboto;color:#444444'><a href="https://goo.gl/CYVahc">https://goo.gl/CYVahc</a> or here <a href="https://goo.gl/UWuBcf">https://goo.gl/UWuBcf</a> or here <a href="https://goo.gl/9iNYCm">https://goo.gl/9iNYCm</a> or here <a href="https://goo.gl/jUuqmS">https://goo.gl/jUuqmS</a>. There are several 10s of thousands similar errors like in the examples. But even though the absolute number is large, it is only a percent or two compared to the total number of buildings in Africa. And as I told you it is possible to repair almost all the above illustrated anomalies. It is challenging and I am working on it using the source data (XML dump) from some weeks ago.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN style='font-size:10.0pt;font-family:Roboto;color:#444444'>So, if you are patient for several days, you will get the buildings for Africa probably with the best preparation and based on the potential in the source data. The data will be in shp format accompanied by some statistics, additional geometries for control and a short documentation.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN style='font-size:10.0pt;font-family:Roboto;color:#444444'>Of course, if you don need these I will not bother you. But at least, you could use the stuff as an option to compare if you use other models. Anyway, the subject might not be of interest for other members so if you still want the buildings we could just switch to bilateral communication about some details (for instance Africa, the continent and Madagascar, eventually some small islands, in which projection(s) and so on).<o:p></o:p></span></p><p class=MsoNormal>Regards, Sandor.</p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Sent from <a href="https://go.microsoft.com/fwlink/?LinkId=550986">Mail</a> for Windows 10</p><p class=MsoNormal><o:p> </o:p></p><div style='mso-element:para-border-div;border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm 0cm 0cm'><p class=MsoNormal style='border:none;padding:0cm'><b>From: </b><a href="mailto:jwhelan0112@gmail.com">john whelan</a><br><b>Sent: </b>28 November 2017 22:13<br><b>To: </b><a href="mailto:fred.rodrigo@gmail.com">Frédéric Rodrigo</a><br><b>Cc: </b><a href="mailto:talk@openstreetmap.org">OpenStreetMap talk mailing list</a><br><b>Subject: </b>Re: [OSM-talk] finding overlapping buildings</p></div><p class=MsoNormal><o:p> </o:p></p><div><div><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Verdana",sans-serif'>The problem is how do you fix them? Having something directly in JOSM is useful. They tend to appear in clusters so step one is find the cluster. Step two is sort the duplicates out.<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Verdana",sans-serif'><o:p> </o:p></span></p></div><div><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Verdana",sans-serif'>There really is some very poor mapping of buildings and this at least identifies the ones that there should be no disagreement about whether they should be deleted or not.<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Verdana",sans-serif'><o:p> </o:p></span></p></div><div><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Verdana",sans-serif'>One day we'll sort out what to do about the very badly mapped buildings that at least two other mappers have referred to as junk but that's another story.<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Verdana",sans-serif'><o:p> </o:p></span></p></div><div><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Verdana",sans-serif'>Cheerio John<o:p></o:p></span></p></div></div><div><p class=MsoNormal><o:p> </o:p></p></div><p class=MsoNormal><o:p> </o:p></p></div></body></html>