On 6 November 2017 at 13:23, Mike Evans <mi...@saxicola.co.uk> wrote: > On Mon, 6 Nov 2017 12:46:34 +0000 > Rob Nickerson <rob.j.nicker...@gmail.com> wrote: > >> Mike wrote: >> >> > A typical code is "PB|SP29|4/1" >> >> Be warned, this is not the format that Pembrokeshire use on the pdf scans >> on their website. It seems to be GIS data only and may be a format Barry >> made. > > Indeed so. ON the PDF it's referenced as "SP29/4"
In this case I would go for prow_ref=SP29/4 as the Council appears to have a clear and unambiguous reference format in use on its Definitive Map. (My view might change if the Definitive Statement used some other scheme, and then I'd have to decide between the two.) Since there's a clear format I'd use that, and not artificially add parish names or types to it. (My guess would be that the "SP29" is some sort of area/parish/map sheet code, and the "4" is the traditional number of the RoW within that area.) FYI: AFAIK, the value in rowmaps isn't supposed to be a ref for use in OSM, and has been deliberately standardised to suit the author's aims and database structure. The initial two characters are a code for the county, while the digit after the final slash is a segment number to distinguish GIS objects with identical other parts of the key. What's in the middle has been extracted from the council-supplied GIS file in some way. In terms of OSM's prow_ref key, I think the county-code and segment numbers should both be neglected. We don't add either to road reference numbers for example, despite the latter being likely to appear in GIS files. Also, for Pembrokeshire, note that according to http://www.rowmaps.com/datasets/PB/ , the GIS data was only released under the "Ordnance Survey OpenData Licence", which isn't compatible with use in OSM. I disagree with the subsequent statement there, which implies that OS's statement automatically allows any OS-ODL licensed data to now be used under the OGL. My view is that the actual rights holders would have to re-license the data, as OS can't make that decision for them. So IMO to use Pembrokeshire's data from rowmaps in OSM, we'd need to get an additional permission/licence from Pembrokeshire Council. Robert. -- Robert Whittaker _______________________________________________ Talk-GB mailing list Talk-GB@openstreetmap.org https://lists.openstreetmap.org/listinfo/talk-gb