Hi all, Thanks Rob for that.
Chris Fleet (NLS) asked me to announce to the OSM community that the NLS is also adding the Ordnance Survey Maps - 25 inch 2nd and later editions, Scotland, 1892-1949, which is "the most detailed topographic mapping for all the inhabited regions of Scotland from the 1890s to the 1940s", as described here: http://maps.nls.uk/os/25inch-2nd-and-later/index.html At the moment, this layer currently covers selected counties in Southern Scotland only and can be added using the following URL: http://geo.nls.uk/mapdata3/os/25_inch/cb/{zoom}/{x}/{y}.png Jerry wrote about the MESH project (http://www.mesh.ed.ac.uk/) in which I'm involved with Richard. Funded by the AHRC, the MESH project is about mapping the history of Edinburgh. We compared the different solutions to create an historical GIS and finally decided to use OSM. So since March, we started to improve OSM in Edinburgh. You can see the results in these two examples: - part of New Town: http://www.openstreetmap.org/#map=17/55.95750/-3.20140 - part of Old Town: http://www.openstreetmap.org/#map=18/55.95005/-3.18792 The mapping is still in progress but we hope to have covered most of the town before the end of October. This being said, because it's a 3-year project, the solution to use OSM would probably not have been possible without the historic maps digitised, georeferenced and provided online by the NLS. It would have been too time-consuming. Indeed because we want to map addresses, we need to map buildings which is sometimes not easy at all in an historic town such as Edinburgh. Using the historic maps allowed us: - to speed up the mapping process, - to add far more details such as walls, gardens or gates (walls and gardens can seem secondary features but all together with buildings, it gives an idea of the plots), - to add some addresses using a combination of maps (OS National Grid maps of Edinburgh (1940s-1960s) contain the house numbers but don't show where the entrances are, contrary to the OS 1893 map, which shows the entrances but not the house numbers) before doing the full survey (thus it saves a lot of time on the field as it's just a matter of checking things rather than drawing/writing on the map), - to improve the accuracy of OSM in term of positioning, at least to be consistent even if there is a global offset; Bing imagery contains a priori an offset (in fact many local offsets) which can be corrected using the features on the grounds such as letter boxes, walls, etc, elements which are included in the historic maps. So I take the opportunity here to thank a lot the NLS (partner of the MESH project) and particularly Chris for their wonderful job here, as well as the local OSM community in Edinburgh (mainly Bob, Brian, Chris, Donald, Neil). And Jerry, yes, you're right, we didn't put many information online yet as we really wanted to concentrate on the core task which was and still is the mapping. But before mid-October, we'll put for sure some material online including maps, some articles and reports to talk about our experience contributing and using OSM, some web applications, and probably some surprises we are working on. Every data produced during this project will be released as open data as we strongly believe that everyone including the general public, local historians, scholars, academics, etc has the right to access and play with the data and tools we will produce/develop. Cheers, Eric On 11 August 2014 23:08, SK53 <sk53....@gmail.com> wrote: > I met Richard Rodger who is leading the MESH project at Edinburgh > University. Addresses in central Edinburgh have changed so little in 200 > years that they are able to use OSM to map where attorneys were located in > the middle of the 19th Century. The historical addresses were acquired from > Business Directories. And MESH is the reason why these particular maps have > been done. There is a link to the project there. > > I dont think there is that much detailed information available yet, but it > looks to be shaping up to be both a fascinating project and a classic > example of how OSM data can be used for purposes very different from what > one might expect. > > Jerry > > > On 11 August 2014 22:52, Donald Noble <drno...@gmail.com> wrote: > >> Thanks Rob, >> >> The alignment matches well with both bing and what is already on OSM >> (although this may largely be derived). >> >> Also pleasing to note that the addresses I have surveyed match those >> on the OS map - don't suppose they change all that often. >> >> Cheers, Donald >> >> On 10 August 2014 00:04, Rob Nickerson <rob.j.nicker...@gmail.com> wrote: >> > Hi all, particularly those folk mapping up in Scotland, >> > >> > The National Library of Scotland has added the earliest editions of >> Ordnance >> > Survey National Grid maps covering the Edinburgh environs to their >> online >> > map offerings. >> > >> > http://maps.nls.uk/additions.html#28 >> > >> > What's so special about these maps is that they show details right down >> to >> > individual buildings plus their addresses! I think this is a first for >> the >> > UK (Warwickshire CC have a map layer of these National Grid maps but >> theirs >> > cover a period which is still in copyright so cannot be used for OSM). >> > >> > If out mapping and you want to double check an address, this could be a >> > great asset to have at your disposal. >> > >> > To add this to JOSM you need to create a new imagery layer with the >> > following URL: >> > >> > http://geo.nls.uk/mapdata3/os/edinburgh_1250_out/{zoom}/{x}/{y}.png >> > >> > Regards, >> > Rob >> > >> > _______________________________________________ >> > Talk-GB mailing list >> > Talk-GB@openstreetmap.org >> > https://lists.openstreetmap.org/listinfo/talk-gb >> > >> >> >> >> -- >> Donald Noble >> http://drnoble.co.uk - http://flickr.com/photos/drnoble >> >> _______________________________________________ >> Talk-GB mailing list >> Talk-GB@openstreetmap.org >> https://lists.openstreetmap.org/listinfo/talk-gb >> > > > _______________________________________________ > Talk-GB mailing list > Talk-GB@openstreetmap.org > https://lists.openstreetmap.org/listinfo/talk-gb > >
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