If you can identify which specific boundaries (or areas) you are interested in, I'd be happy to ensure they are up to date with the latest Boundary-Line data.
Regards, Colin On Sun, 22 Jun 2025 at 22:21, Ed Loach <[email protected]> wrote: > They weren't imported nationally. I used boundary line in the Tendring > district of Essex (once it became available) to replace those I'd > previously traced from ooc maps, in case they'd changed. > > Oh, and if you have boundary line in QGIS can you check whether the > southern boundary of Caister goes through the middle of Haven Seaside where > I was last weekend, or goes around the park as I noticed on at least one > other online source, please? I've been meaning to download a newer set of > data to check. > > Ed > > ------------------------------ > *From:* Steve Doerr <[email protected]> > *Sent:* Sunday, June 22, 2025 7:08:08 PM > *To:* [email protected] <[email protected]> > *Subject:* Re: [Talk-GB] Parish boundaries and physical features > > On 21/06/2025 14:55, Daniel Hatton via Talk-GB wrote: > > > > It looks like, on OSM, we have parish boundaries in England imported > > as a numerical dataset from an OS OpenData product (they're tagged > > source:OS_OpenData_Boundary-Line). Unfortunately, the boundaries in > > this dataset appear to have been polygonized with a rather coarse > > granularity - about 15 metres. There are a few places in my area > > where this coarse granularity seriously obscures the fact that the > > actual parish boundary coincides with (and is quite likely legally > > defined by) a physical feature (mostly either the centreline of a > > watercourse or one bank of a watercourse). Compare, for example, the > > specification of the parish boundary we have at > > <https://www.openstreetmap.org/edit#map=18/52.116673/0.157049> with > > the finer representation of the parish boundary in the same area > > available from <https://maps.cambridgeshire.gov.uk/mycambs.aspx> or > > <https://www.ordnancesurvey.co.uk/election-maps/gb/>. > > I have BoundaryLine loaded into QGIS, and it looks to me like the > boundary mapping in this area is at best a simplified version of > BoundaryLine. This suggests to me that something in the original import > resulted in a loss of resolution. If that's the case, it might be best > to try to reimport the BoundaryLine data more accurately. > > -- > Steve > > > > > > _______________________________________________ > Talk-GB mailing list > [email protected] > https://lists.openstreetmap.org/listinfo/talk-gb > _______________________________________________ > Talk-GB mailing list > [email protected] > https://lists.openstreetmap.org/listinfo/talk-gb >
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