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 <[email protected]> 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 > [email protected] > https://lists.openstreetmap.org/listinfo/talk-gb >
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