I adjusted the map from a trace I obtained this evening: https://www.openstreetmap.org/changeset/67238911
Regards, *Paul* On Thu, 14 Feb 2019 at 12:44, Paul Berry <pmberry2...@gmail.com> wrote: > I intend to take a spin around the linked roundabouts this evening and try > to capture a trace or two... > > Regards, > *Paul* > > On Wed, 13 Feb 2019 at 21:00, Warin <61sundow...@gmail.com> wrote: > >> On 14/02/19 03:42, Ed Loach wrote: >> > Paul wrote: >> > >> >> Jerry, >> >> >> >> No worries. I think I'll still pop down for a survey anyway because I >> now want to >> >> try the GPS + car trick and see how it turns out. We'll compare >> changesets later :) >> > Much of Clacton was originally mapped using that method, when there was >> no imagery covering the area. >> > https://www.openstreetmap.org/user/EdLoach/traces/page/79 >> > When imagery and OS opendata became available it was usually pretty >> close. I was using (and still use) a Locosys GT-31. >> > >> > I have seen areas where the uploaded traces and the OSM roads seem to >> follow the pavement in the imagery and suspect it was mapped by a walker >> who hadn't adjusted for not walking down the middle of the road (I'm not >> talking a constant offset here as it depended which side of the roads they >> were walking). >> >> Same applies for car traces. Best to average multiple trips in both >> directions. >> >> > >> > Accuracy will depend on the receiver and signal reception. >> >> Yep. Multiple trips can help with everything but reception problems >> caused by local obstructions (buildings, cliffs etc. >> >> >> >> >> _______________________________________________ >> Talk-GB mailing list >> Talk-GB@openstreetmap.org >> https://lists.openstreetmap.org/listinfo/talk-gb >> >
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