Hey Bjoern, Thanks very much for your suggestions, will update the task, and as you say a collated page with photo examples would be awesome.
Thanks very much for the contributions and validations so far! http://tasks.hotosm.org/?sort_by=priority&direction= asc&search=Salima+District Rebecca On Sat, May 20, 2017 at 2:00 PM, john whelan <[email protected]> wrote: > The problem with using imagery is it depends when it was taken. Just > after the rainy season all the unpaved highways will be narrower. > Realistically if we map the highways connecting settlements as something > such as highway=unclassified surface unpaved then let the locals clean up > that probably is the best. > > Cheerio John > > On 20 May 2017 at 07:38, Bjoern Hassler <[email protected]> wrote: > >> Hi Rebecca, >> >> Thanks for posting this! >> >> A few suggestions below - let me say up front that I am really happy to >> work on these together with others - but I think it does need a steer from >> others as well, maybe some experienced validators? Here goes. >> >> I'm aware of https://wiki.openstreetmap.org/wiki/Highway_Tag_Africa (and >> pictures at street level), but it would be really helpful to have some >> actual satellite images with the typology overlaid as well. E.g. >> >> - an image of a section with "highway=tertiary". Comment: You can see >> the paved road surface, it's a wide road - definitely tertiary. Most >> likely >> these should all be marked already. >> - an image of a section with "highway=tertiary". Comment: You can see >> it's unpaved, but it's quite wide (two vehicles can pass), and connects >> several major settlements - still use tertiary >> - an image of a section with "highway=unclassified". Comment: You can >> see it's unpaved, and looks quite narrow (two vehicles cannot pass >> easily), >> but it's usable by 4x4. Use unclassified. >> - an image of a section with "highway=unclassified". Comment: You can >> see it's unpaved, and looks quite narrow, but it's usable by 4x4. Although >> it only goes to one settlement, use unclassified. >> - an image of a section with "highway=residential". Comment: Short >> roads between buildings. >> >> Other comments that would be useful (if they can be made): >> >> - If you are not sure what to use: Use unclassfied over residential >> (or other way round). >> - Use path over track (etc). >> - (http://www.openstreetmap.org/user/Johnwhelan's suggestion) If you >> can see a road going to a house with metal roof, that road is most likely >> passable by vehicle: use unclassified, rather than track/path. >> >> MapCSS: >> >> - highway=residential and unclassified look the same in JOSM. Would >> be good to have an adjusted MapCSS (Africa.css) that distinguishes those, >> and (ultimately) gives more prominence to the features we are interested >> in. >> >> Final suggestion: Wiki page https://wiki.openstreetmap.org >> /wiki/Building_Tag_Africa. I saw a presentation somewhere (Ralph?) with >> images of buildings (round huts, square houses). It would be good to set up >> a new wiki page with those, to help in mapping buildings. >> >> As I said above, I'm very happy to help with all of these. E.g. if some >> of the validators would be happy to pass images to me (maybe as they are >> validating and re-tagging or extending road networks), which I would be >> very happy to collate, post to the wiki, and write text. Or start putting a >> MapCSS together and check it into git, etc... >> >> Any takers? >> Bjoern >> >> PS. Somewhat unrelated to the above: Unclassfied->tertiary: This may be a >> hard call to make, but some of the long fairly straight roads, clearly >> connecting larger villages (e.g. North of the M14 in this task) are down as >> Unclassified (in pre-existing map data). It seems to me that some of them >> should become tertiary. Johnwhelan also mooted this in a validation comment! >> >> >> On 19 May 2017 at 17:37, Rebecca Firth <[email protected]> wrote: >> >>> Hi All, >>> >>> We have set up two small projects to map the road network in Salima >>> District, Malawi, to support UNICEF projects working on the ground. UNICEF >>> are finding it difficult to work in the region without an accurate road >>> network map, as navigation and deliveries for all their projects is >>> continually delayed causing unexpected changes to project timelines and >>> costs. >>> >>> The projects are around half way done, but would really benefit from a >>> couple of experienced road mappers jumping on to map + validate the data. >>> The tasks are here, if anyone wants to jump on: >>> http://tasks.hotosm.org/?sort_by=priority&direction=asc&; >>> search=Salima+District >>> >>> Have a lovely weekend, >>> >>> Rebecca >>> >>> -- >>> *Rebecca Firth* >>> Community Partnerships Manager >>> [email protected] <[email protected]> >>> @RebeccaFirthy >>> Skype: rebeccafirth >>> >>> *Humanitarian OpenStreetMap Team* >>> *Using OpenStreetMap for Humanitarian Response & Economic Development* >>> web <http://hotosm.org/> | twitter <https://twitter.com/hotosm> | >>> facebook <https://www.facebook.com/hotosm> | donate >>> <http://donate.hotosm.org/> >>> >>> _______________________________________________ >>> HOT mailing list >>> [email protected] >>> https://lists.openstreetmap.org/listinfo/hot >>> >>> >> >> _______________________________________________ >> HOT mailing list >> [email protected] >> https://lists.openstreetmap.org/listinfo/hot >> >> > -- *Rebecca Firth* Community Partnerships Manager [email protected] <[email protected]> @RebeccaFirthy Skype: rebeccafirth *Humanitarian OpenStreetMap Team* *Using OpenStreetMap for Humanitarian Response & Economic Development* web <http://hotosm.org/> | twitter <https://twitter.com/hotosm> | facebook <https://www.facebook.com/hotosm> | donate <http://donate.hotosm.org/>
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