[HOT] Tracing the clan boundaries in Liberia
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Hi all: I was doing some testing on manually tracing the clan boundaries of Liberia from the UNMIL places data. That data includes, for the huge majority of the 14,020 nodes, the clan each place belongs to, and also the district and county. There are 15 counties, divided in a total of 90 districts, and it seems all of those boundaries are already in OSM (correct me if I am wrong). I would suggest to do this by one or two people, with experience in making boundaries. We should agree in a tagging schema, to avoid inconsistencies (it would be mainly for the source tag). Needless to say, I offer myself on doing this. To speed up the thing, here is my proposal for the tagging: Segments: boundary=administrative admin_level=8 source=estimate (or something similar) Maybe source:description=Data derivated from the UNMIL place nodes Relations: type=boundary boundary=administrative name=* admin_level=8 source=UNMIL source:description=Data derivated from the UNMIL place nodes We would include the admin_centre of all clans (when easily guessed) as member of each relation, adding to it the capital=8 tag. We could also check if all districts have their admin_centre as member. If not, we would add it, tagging it with capital=6. Any problems, like having to change the district borders or other issues, we would discuss them before doing such changes. Cheers, Rafael. - -- Twitter: http://twitter.com/ravilacoya - Por favor, non me envíe documentos con extensións .doc, .docx, .xls, .xlsx, .ppt, .pptx, aínda podendoo facer, non os abro. Atendendo á lexislación vixente, empregue formatos estándares e abertos. http://es.wikipedia.org/wiki/OpenDocument#Tipos_de_ficheros -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.10 (GNU/Linux) Comment: Using GnuPG with undefined - http://www.enigmail.net/ iQIcBAEBAgAGBQJUcJIUAAoJEB3niTly2pPQHs8P/iFLb5gMH0MdcHmMuUCu6bFz fGvApzTqdAND7Y57EC9K05gyS7LJXpVEcJzAt4xVvXTMipUzNg9/BiPoZj+68x5J jbIOg1t2qmpx0vN1fYgkVEz/8Zw44LJckQMiO+T+1rVz7L4HMXY46nIrUd8VoAZE d7cgqCdsSxTJVafpMg3ZAYtc4x5pV+BDJUgwSmwF1l0bwNMHcucgiFtpXnZqihaE VVnzbMviLdYHLIU5bK9gNYpXQV+WuJqHpwO8ZZ0S2OrScAvrvJi0T+iB1KtmIR7Q UPIydFvuxN41U+BEme+63lWJIuEKRxbTwDxIgh640VoufE2EJ4oXVDLRE28CPFcF nmwUo8I+D++UjlQ9ptsYOvAb5dcIdnkopDDkHhxPETzwtn5VejAiujvP1KNO4++G LQpJ2rhd99JN72zusWJSZf1z3bsQuLqn2NYwzXa/l0C4EX0RVz+hZOinb4uCduXV f52G+3MtE+Z7cLGlex3fmWC8itkkSks70VJY7vmoKQwqdLlnpmUCW+xQfPvyPBlY NfMav8sUgHzgixAx1v62zZ3Vg6XJJk4wvI6L7/YnX2O4eSQZm/HPO8/BBINWjE2d dVuWZsniL17/b3KC10at4gsMkNS6j/hvltpc/7RgKbgaFBZjDnQLskx7I7gNMdCS icALVTbc6lqKkhvfY+dR =9FUl -END PGP SIGNATURE- ___ HOT mailing list HOT@openstreetmap.org https://lists.openstreetmap.org/listinfo/hot
Re: [HOT] Tracing the clan boundaries in Liberia
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 I am not sure this is worth doing, at least not manually. GIS software can draw enclosing polygons around the common clan entries and then these could be used to the same effect, with a lot less manual work. However in any case, I think we need to ask if deriving them this way is the best way to go anyway. The data likely already exists somewhere, so our efforts may be better spent trying to free that data than trying to recreate a rough copy of it. - -AndrewBuck On 11/22/2014 07:39 AM, Rafael Avila Coya wrote: Hi all: I was doing some testing on manually tracing the clan boundaries of Liberia from the UNMIL places data. That data includes, for the huge majority of the 14,020 nodes, the clan each place belongs to, and also the district and county. There are 15 counties, divided in a total of 90 districts, and it seems all of those boundaries are already in OSM (correct me if I am wrong). I would suggest to do this by one or two people, with experience in making boundaries. We should agree in a tagging schema, to avoid inconsistencies (it would be mainly for the source tag). Needless to say, I offer myself on doing this. To speed up the thing, here is my proposal for the tagging: Segments: boundary=administrative admin_level=8 source=estimate (or something similar) Maybe source:description=Data derivated from the UNMIL place nodes Relations: type=boundary boundary=administrative name=* admin_level=8 source=UNMIL source:description=Data derivated from the UNMIL place nodes We would include the admin_centre of all clans (when easily guessed) as member of each relation, adding to it the capital=8 tag. We could also check if all districts have their admin_centre as member. If not, we would add it, tagging it with capital=6. Any problems, like having to change the district borders or other issues, we would discuss them before doing such changes. Cheers, Rafael. ___ HOT mailing list HOT@openstreetmap.org https://lists.openstreetmap.org/listinfo/hot -BEGIN PGP SIGNATURE- Version: GnuPG v1 iQIcBAEBAgAGBQJUcJbSAAoJEK7RwIfxHSXbTpoP/3Hjk7uA7D8g6+HobV0HAGYu ncZEofun+LOZSiQA9cYVGgAn5Q2NEdk3Patet2IJvEEj6WjA6R7g9VUngFSd1ihv M4uZCgivt6uLLUaPoXlPw794GVDLZAzUj94q3oEDjcJIafIZTEdPFbK2VcglaMe8 +8vkQ04mFHeunNCnHKOM/kQ0fyyDCCwa5KuaJ2MkuMHp9f3uyFMxPzDb0wWIBXKb qP6R68k0JGpK+e3Qwe+1YAoWD+InlhgggRYATZcXHLfOeivxk6ZZaurGxgMvLOIC FGCs1nrNwUaMzp7r2Wq9K/tTCkI0TQsUa+chKJmCQyjg2V3DH0WSNooHGqW+JBIZ HLrrcoO6rFL+YPfaDRwo+j6pDFK5EACG9V9UWMZ3Qf23tBYNL2K3w0OFVlqckZOl wGoaMRvG79JXq0WEVYKtT9UgGt6sKr0V6vAZn+wd6PSzey+OWO3Vc5XKxg7xI8sp G9bZAeOUZyUiThcF72PfWqeg+P6fkbjrWLXUYz1omWhOnO26I5PM0nuQAB4jUKEY DmT89r72xltEn1byMZq5Joz5p61eNJHPJg4S9p0l9vmdjyFdWgUvUoUM/taXuY7j DGEoZ65aFx811I3JfdKKADRPFUFvo9ITqTMA+phtPnt4pVDY/qgGdTCGVZOKYysr 05y7gyS0XW6ALrjrrKYn =RsoD -END PGP SIGNATURE- ___ HOT mailing list HOT@openstreetmap.org https://lists.openstreetmap.org/listinfo/hot
[HOT] [Tag] #767 - Mali, Bamako
Hi HOT Please have a look at this patchwork of small residential clusters and mix of cultivated gardens, lawns, orchards... This is currently mapped as surrounding landuse=farmland with inclusion of landuse=residential. https://www.openstreetmap.org/#map=18/12.612159/-7.978204 How would you handle this? My personal opinion is: * These small gardens do not qualify as farmland. * The surrounding should be landuse=residential * Green inclusions as leisure=garden / landuse=orchard ___ HOT mailing list HOT@openstreetmap.org https://lists.openstreetmap.org/listinfo/hot
[HOT] [Tag] landuse=residential in rural and urban areas
My previous message leads me to a more generic question. In http://tasks.hotosm.org/project/767 and maybe some other project, the instructions reads: Settlements: Trace polygon around clusters of houses. Tag with landuse=residential I feel these instructions are related to rural areas. They can be misunderstood in the context of urban areas. In this project we are also mapping inside Bamako, very urban and very dense. What about urban areas? What is the good pratice, the recommended size for landuse=residential in Bamako and other African big cities? * Only one huge outline landuse=residential around the whole city * By neighborhoods? * Cut by main roads (arteries of the city) * Block by block As I map and review I see almost every case. Has this been discussed or documented already? althio On Sat, Nov 22, 2014 at 3:29 PM, althio forum althio.fo...@gmail.com wrote: Hi HOT Please have a look at this patchwork of small residential clusters and mix of cultivated gardens, lawns, orchards... This is currently mapped as surrounding landuse=farmland with inclusion of landuse=residential. https://www.openstreetmap.org/#map=18/12.612159/-7.978204 How would you handle this? My personal opinion is: * These small gardens do not qualify as farmland. * The surrounding should be landuse=residential * Green inclusions as leisure=garden / landuse=orchard ___ HOT mailing list HOT@openstreetmap.org https://lists.openstreetmap.org/listinfo/hot
Re: [HOT] [Tag] #767 - Mali, Bamako
Hi athio, Oh I don't know. I don't think what I see classifies as small gardens especially when grouped into contiguous parcels. Considering how basically well mapped it is, I would just fix up the tags and in at least one example: https://www.openstreetmap.org/#map=18/12.612812/-7.978442 make that a proper multi polygon. In rural and semi rural areas mapping plots that small as farmland would not really be a good idea, that is why we have been focusing on forest when in rural farmland, mapping what isn't farmland. But in a dense urban area like that the reverse is true, small plots of land like that are rare and GIS people can do interesting things will the polygons well tagged. Personally, I think the distinction between farmyard, farm and farmland is difficult, actually, correct me if I am wrong, but I think 'farm' is deprecated so only either farmland of farmyard are the choices. I go with farmland unless it is a really small homestead type ag. which I almost never map so I basically don't use farmyard, only farmland. These are right on the edge for me, bigger than small backyard garden, smaller than commercial ag. I'd group them as much as possible and tag them landuse=farmland. I just saw you fix the aeroport=apron on the buildings, nice. Cheers, Blake On Sat, Nov 22, 2014 at 9:29 AM, althio forum althio.fo...@gmail.com wrote: Hi HOT Please have a look at this patchwork of small residential clusters and mix of cultivated gardens, lawns, orchards... This is currently mapped as surrounding landuse=farmland with inclusion of landuse=residential. https://www.openstreetmap.org/#map=18/12.612159/-7.978204 How would you handle this? My personal opinion is: * These small gardens do not qualify as farmland. * The surrounding should be landuse=residential * Green inclusions as leisure=garden / landuse=orchard ___ HOT mailing list HOT@openstreetmap.org https://lists.openstreetmap.org/listinfo/hot ___ HOT mailing list HOT@openstreetmap.org https://lists.openstreetmap.org/listinfo/hot
Re: [HOT] Tracing the clan boundaries in Liberia
Clan names from the import had problems with truncation, as far as I recall, so they would have to be verified. On Sat, 22 Nov 2014 15:01 Andrew Buck andrew.r.b...@gmail.com wrote: -BEGIN PGP SIGNED MESSAGE- Hash: SHA1 I am not sure this is worth doing, at least not manually. GIS software can draw enclosing polygons around the common clan entries and then these could be used to the same effect, with a lot less manual work. However in any case, I think we need to ask if deriving them this way is the best way to go anyway. The data likely already exists somewhere, so our efforts may be better spent trying to free that data than trying to recreate a rough copy of it. - -AndrewBuck On 11/22/2014 07:39 AM, Rafael Avila Coya wrote: Hi all: I was doing some testing on manually tracing the clan boundaries of Liberia from the UNMIL places data. That data includes, for the huge majority of the 14,020 nodes, the clan each place belongs to, and also the district and county. There are 15 counties, divided in a total of 90 districts, and it seems all of those boundaries are already in OSM (correct me if I am wrong). I would suggest to do this by one or two people, with experience in making boundaries. We should agree in a tagging schema, to avoid inconsistencies (it would be mainly for the source tag). Needless to say, I offer myself on doing this. To speed up the thing, here is my proposal for the tagging: Segments: boundary=administrative admin_level=8 source=estimate (or something similar) Maybe source:description=Data derivated from the UNMIL place nodes Relations: type=boundary boundary=administrative name=* admin_level=8 source=UNMIL source:description=Data derivated from the UNMIL place nodes We would include the admin_centre of all clans (when easily guessed) as member of each relation, adding to it the capital=8 tag. We could also check if all districts have their admin_centre as member. If not, we would add it, tagging it with capital=6. Any problems, like having to change the district borders or other issues, we would discuss them before doing such changes. Cheers, Rafael. ___ HOT mailing list HOT@openstreetmap.org https://lists.openstreetmap.org/listinfo/hot -BEGIN PGP SIGNATURE- Version: GnuPG v1 iQIcBAEBAgAGBQJUcJbSAAoJEK7RwIfxHSXbTpoP/3Hjk7uA7D8g6+HobV0HAGYu ncZEofun+LOZSiQA9cYVGgAn5Q2NEdk3Patet2IJvEEj6WjA6R7g9VUngFSd1ihv M4uZCgivt6uLLUaPoXlPw794GVDLZAzUj94q3oEDjcJIafIZTEdPFbK2VcglaMe8 +8vkQ04mFHeunNCnHKOM/kQ0fyyDCCwa5KuaJ2MkuMHp9f3uyFMxPzDb0wWIBXKb qP6R68k0JGpK+e3Qwe+1YAoWD+InlhgggRYATZcXHLfOeivxk6ZZaurGxgMvLOIC FGCs1nrNwUaMzp7r2Wq9K/tTCkI0TQsUa+chKJmCQyjg2V3DH0WSNooHGqW+JBIZ HLrrcoO6rFL+YPfaDRwo+j6pDFK5EACG9V9UWMZ3Qf23tBYNL2K3w0OFVlqckZOl wGoaMRvG79JXq0WEVYKtT9UgGt6sKr0V6vAZn+wd6PSzey+OWO3Vc5XKxg7xI8sp G9bZAeOUZyUiThcF72PfWqeg+P6fkbjrWLXUYz1omWhOnO26I5PM0nuQAB4jUKEY DmT89r72xltEn1byMZq5Joz5p61eNJHPJg4S9p0l9vmdjyFdWgUvUoUM/taXuY7j DGEoZ65aFx811I3JfdKKADRPFUFvo9ITqTMA+phtPnt4pVDY/qgGdTCGVZOKYysr 05y7gyS0XW6ALrjrrKYn =RsoD -END PGP SIGNATURE- ___ HOT mailing list HOT@openstreetmap.org https://lists.openstreetmap.org/listinfo/hot ___ HOT mailing list HOT@openstreetmap.org https://lists.openstreetmap.org/listinfo/hot
Re: [HOT] [Tag] #767 - Mali, Bamako
Hi The objective is not to make micro-mapping of each parcel and more to trace residential areas in rural areas. There were some discussions on this, but I dont think that there is consensus on this. In urban areas, we shoud simply have a large polygon around the urban area and not cut at each street. And I would be surprised to see farmlands inside a dense area like Bamako. If you trace a large residential polygon, and inside it small polygons for schools, hospitals or any other landuse, you do not need to cut everything. The Map Renderers should know how to interpret this. Pierre De : althio forum althio.fo...@gmail.com À : Cc : HOT Openstreetmap hot@openstreetmap.org Envoyé le : Samedi 22 novembre 2014 9h29 Objet : [HOT] [Tag] #767 - Mali, Bamako Hi HOT Please have a look at this patchwork of small residential clusters and mix of cultivated gardens, lawns, orchards... This is currently mapped as surrounding landuse=farmland with inclusion of landuse=residential. https://www.openstreetmap.org/#map=18/12.612159/-7.978204 How would you handle this? My personal opinion is: * These small gardens do not qualify as farmland. * The surrounding should be landuse=residential * Green inclusions as leisure=garden / landuse=orchard ___ HOT mailing list HOT@openstreetmap.org https://lists.openstreetmap.org/listinfo/hot ___ HOT mailing list HOT@openstreetmap.org https://lists.openstreetmap.org/listinfo/hot
Re: [HOT] [Tag] landuse=residential in rural and urban areas
My own practice for large urban areas (last experience was a Canadian city rather than a HOT task) is to carve them up into multiple landuse=residential areas, bounding them on roads or other landuse types. As much as possible, though, I avoid actually making the boundaries/roads touch each other, because of bad experiences correcting boundaries from imagery -- if the boundaries touch you have to detach them before you can correct the ones in error. Thew implication is that there is, say, a meter of unlabelled space between one entity and the next, but I can't see that mattering. Tom Taylor On 22/11/2014 9:51 AM, althio forum wrote: My previous message leads me to a more generic question. In http://tasks.hotosm.org/project/767 and maybe some other project, the instructions reads: Settlements: Trace polygon around clusters of houses. Tag with landuse=residential I feel these instructions are related to rural areas. They can be misunderstood in the context of urban areas. In this project we are also mapping inside Bamako, very urban and very dense. What about urban areas? What is the good pratice, the recommended size for landuse=residential in Bamako and other African big cities? * Only one huge outline landuse=residential around the whole city * By neighborhoods? * Cut by main roads (arteries of the city) * Block by block As I map and review I see almost every case. Has this been discussed or documented already? althio On Sat, Nov 22, 2014 at 3:29 PM, althio forum althio.fo...@gmail.com wrote: Hi HOT Please have a look at this patchwork of small residential clusters and mix of cultivated gardens, lawns, orchards... This is currently mapped as surrounding landuse=farmland with inclusion of landuse=residential. https://www.openstreetmap.org/#map=18/12.612159/-7.978204 How would you handle this? My personal opinion is: * These small gardens do not qualify as farmland. * The surrounding should be landuse=residential * Green inclusions as leisure=garden / landuse=orchard ___ HOT mailing list HOT@openstreetmap.org https://lists.openstreetmap.org/listinfo/hot ___ HOT mailing list HOT@openstreetmap.org https://lists.openstreetmap.org/listinfo/hot
Re: [HOT] [Tag] landuse=residential in rural and urban areas
On 11/22/2014 01:34 PM, Tom Taylor wrote: As much as possible, though, I avoid actually making the boundaries/roads touch each other, because of bad experiences correcting boundaries from imagery -- if the boundaries touch you have to detach them before you can correct the ones in error. I just wanted to comment on this from my perspective both cleaning up and reviewing tiles. I've seen a lot of instances where landuse and other polys share nodes with roadways, buildings, and other things. I try to separate the nodes whenever possible. My working theory is that a node should only be shared if there's some fundamental physical relationship between the two objects (landuse boundary vs. building for instance). This is because there are many cases where one entity (the roadway) might be edited where the other associated object (landuse) should not be. An inverse example would be a roadway crossing a stream. They *should* share the node because the two ways have an inextricable and fundamentally *physical* relationship to each other. Altering the node re: the roadway should absolutely affect the stream's way, and the editor's job is to make sure that both alterations stemming from that node change are valid. I don't know if there are any formal guidelines on this, but that's my take on it, and maybe this can spark some discussion and formalizing of the topic? ___ HOT mailing list HOT@openstreetmap.org https://lists.openstreetmap.org/listinfo/hot
[HOT] Polio Outbreak and Ebola Preparedness - East Cameroon - New Task Announcement
Dear All The World Health Organization (WHO) and the Center for Disease Control and Prevention (CDC) need all rural Cameroon mapped in response to the Polio outbreak and also monitoring and preparing for a possible Ebola outbreak. A New task has been created to assist with Round 2 of this project using High resolution imagery supplied by DigitalGlobe’s WorldView-2 service available on the Mapbox Satellite Layer. *http://tasks.hotosm.org/project/777 http://tasks.hotosm.org/project/777 * Please assist these organizations by mapping the following: - villages/residential areas (Polygons tagged landuse=residential) - roads, streets, paths (tag roads according the Highway Tag Africa wiki page) - water bodies, rivers, streams and forests - open areas (not fields, just smooth open ground next to towns) as leisure=common as these are potential helicopter landing sites. - school areas, easily identified as 1 or 2 long buildings at the edge of the village often with two small toilet buildings behind them. The schools are almost always accompanied by a large open area for the children to play in, tag the whole area of the school complex (amenity=school) and trace the school buildings ( building=school) and bathrooms ( building=yes and amenity=toilets.) *NOTE: Buildings are NOT required on this Task, but landuse=residential will be used to identify future tasks to map buildings, so please include all residential areas as Polygons* If you have local knowledge, please also identify: - names and boundaries of settlements, sub-places, administrative districts and health districts - medical facilities The Polio outbreak in Cameroon has been ongoing since at least October 2013. The outbreak continued into 2014, with international spread to Equatorial Guinea. In March 2014, WHO elevated the risk assessment of international spread of polio from Cameroon to very high, due to expanding circulation and influx of vulnerable refugee populations from Central African Republic (CAR). This risk assessment remains in place. Further undetected circulation in Cameroon cannot be ruled out. Moreover, the risk of virus spreading into CAR is considered to be particularly high given the large-scale population movements from CAR into Cameroon. Regards Mark Cupitt If we change the world, let it bear the mark of our intelligence Hire Me on Freelancer See me on Open StreetMap https://www.openstreetmap.org/user/Mark_Cupitt See me on LinkedIn http://ph.linkedin.com/in/markcupitt *See me on StackExchange http://gis.stackexchange.com/users/17846/mark-c* === The contents of this email are intended only for the individual(s) to whom it is addressed and may contain confidential or privileged information. If you are not the intended recipient, you must not disclose, copy, distribute, or use the contents of this email. If you have received this email in error, please notify the sender immediately and delete the email and any attachments. === ___ HOT mailing list HOT@openstreetmap.org https://lists.openstreetmap.org/listinfo/hot
