Hi John, You are welcome to split the tasks as you see fit to suit you mapping style. It is always a trade-off with larger area sizes, lots of cloud cover. Smaller tiles results in lots of un-mappable tiles covered in Cloud that people leave untouched and so on. I think splitting them is the way to go, pick the ones that are clear, and leave the tiles with lots of cloud cover un-split so they can have some mapping and be marked as complete.
Does raise an interesting thought for followup mapping, in TM, should we be bale to mark a tile as covered in cloud, un-mappable so it can be redone later when new imagery is available. Hmm, will log an issue on TM for this .. Best 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. =============================================================================================== On Tue, Nov 25, 2014 at 9:49 AM, john whelan <jwhelan0...@gmail.com> wrote: > I wonder if #777 is a little too ambitious? To view buildings you need to > zoom in fairly closely, each tile covers an enormous area, 101 has already > been mapped in detail so its not possible to download the tile from OSM. > Many of the high resolution images have cloud cover. > > I accept the need but wonder about what is possible with the existing > images and huge tile sizes, what quality of service can we hope to > provide. It's certainly not possible to go over a single tile in detail > within a single session and with multiple people working on the tiles its > difficult to know if someone has already done the corner you're looking at > or not. > > Cheerio John > > On 23 November 2014 at 08:56, Blake Girardot <bgirar...@gmail.com> wrote: > >> I am going to go over this project right now doing what I call part of >> "pre-mapping." I am going to look at the imagery, the local features, what >> is mapped and how is the image alignment from different sources. Maybe do a >> little mapping or fixing up along the way. >> >> From that I should be able to give better help and advice on this project >> going forward. >> >> If anyone wants to join me live while I do it and contribute to working >> out good practices and standards for mapping this project it is available >> as a Live Google On Air Hangout for probably the next 1-2hr >> >> https://plus.google.com/u/0/events/cdsil6vfvuk6h17d46j4lq6p8m0 >> >> Join up, its easy, it is live now. >> >> Cheers >> >> On Sat, Nov 22, 2014 at 9:59 PM, Mark Cupitt <markcup...@gmail.com> >> wrote: >> >>> 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 >>> >>> >> >> _______________________________________________ >> HOT mailing list >> HOT@openstreetmap.org >> https://lists.openstreetmap.org/listinfo/hot >> >> >
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