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</o:shapelayout></xml><![endif]--></head><body lang=EN-GB link=blue vlink=purple><div class=WordSection1><p class=MsoPlainText>Hi Andrew and all -<o:p></o:p></p><p class=MsoPlainText><o:p> </o:p></p><p class=MsoPlainText>First to say what an amazing resource the OSM data over the typhoon affected parts of the Philippines is proving to be for our field team in Tacloban.<o:p></o:p></p><p class=MsoPlainText><o:p> </o:p></p><p class=MsoPlainText>This is just a question about how we can make best use of the tremendous quantity of building damage data that is being captured. We're mainly using Shapefile downloads, via HOT Exports and Geofabrik. For the 'building' polygons I see various possible values: NULL, church, collapsed, construction, damaged, dormitory, house, industrial, no, office, public, residential, school, terrace, university, yes. So, some specific questions:<o:p></o:p></p><p class=MsoPlainText><o:p> </o:p></p><p class=MsoPlainText>1. Having referred to the OSM <a href="http://wiki.openstreetmap.org/wiki/Damaged_buildings_crisis_mapping">Damaged buildings crisis mapping</a> page, I'm not sure I'm making the best use of the data that's there, e.g. how to access typhoon:reviewed and typhoon:damage ? Would we be better not using shapefile downloads but another format that preserves more of the source data structure?<o:p></o:p></p><p class=MsoPlainText><o:p> </o:p></p><p class=MsoPlainText>2. Perhaps it's just the way that the shapefile attributes are derived from the source OSM data, but how could we separate the building type (house, office etc) from the damage status?<o:p></o:p></p><p class=MsoPlainText><o:p> </o:p></p><p class=MsoPlainText>3. Finally (and apologies for touching on what I expect is a long-running question), how are such data time-stamped? I'm thinking for example of buildings that were already tagged as damaged pre-typhoon, or that become repaired.<o:p></o:p></p><p class=MsoPlainText><o:p> </o:p></p><p class=MsoPlainText>Any thoughts much appreciated, very many thanks -<o:p></o:p></p><p class=MsoPlainText>Nick.<o:p></o:p></p><p class=MsoPlainText><o:p> </o:p></p><p class=MsoPlainText><o:p> </o:p></p><p class=MsoPlainText><span lang=EN-US>-----Original Message-----<br>From: Andrew Buck [mailto:] <br>Sent: 11 November 2013 01:28<br>To: hot@openstreetmap.org<br>Subject: Re: [HOT] Tagging scheme for damaged buildings</span><o:p></o:p></p><p class=MsoPlainText><o:p> </o:p></p><p class=MsoPlainText>-----BEGIN PGP SIGNED MESSAGE-----<o:p></o:p></p><p class=MsoPlainText>Hash: SHA1<o:p></o:p></p><p class=MsoPlainText><o:p> </o:p></p><p class=MsoPlainText>The damage assessment can be done very easily in josm. I expect it will only take 3 or 4 people a few hours to assess the damage on all the the ~30,000 buildings in Tacloban. Since we have already traced all the buildings from Bing, we can just select them in groups and mark them damaged/destroyed/etc. With filters in josm this goes very quickly.<o:p></o:p></p><p class=MsoPlainText><o:p> </o:p></p><p class=MsoPlainText>- -AndrewBuck<o:p></o:p></p><p class=MsoPlainText><o:p> </o:p></p><p class=MsoPlainText><o:p> </o:p></p><p class=MsoPlainText>On 11/10/2013 03:34 PM, William Morris wrote:<o:p></o:p></p><p class=MsoPlainText>> Would it be useful to partners on the ground if we set up a <o:p></o:p></p><p class=MsoPlainText>> Maproulette-type thing to quickly compare post-storm imagery to the <o:p></o:p></p><p class=MsoPlainText>> pre-storm structures we've mapped? It might go faster that way, and it <o:p></o:p></p><p class=MsoPlainText>> seems to draw lots of participation.<o:p></o:p></p><p class=MsoPlainText>> <o:p></o:p></p><p class=MsoPlainText>> One downside is that it might be tough to guarantee the needed <o:p></o:p></p><p class=MsoPlainText>> horizontal accuracy to match a building with a particular pile of <o:p></o:p></p><p class=MsoPlainText>> rubble.<o:p></o:p></p><p class=MsoPlainText>> <o:p></o:p></p><p class=MsoPlainText>> -Bill Morris<o:p></o:p></p></div></body></html>