Hi Geof, What was their worry is that, if what we are using is not so accurate, They will end up tracing a person's toilet or water tap in a different compound.
Gertrude On Mar 1, 2016 1:05 AM, "Geoffrey Kateregga" <[email protected]> wrote: > Hi Trudy, > > Thanks for the work done so far in building an OSM community in Zambia, > I can also share with you my experience in using OSMTracker, GPS units and > field papers from our mapping under "Ramani Huria" in Dar es Salaam. > > The accuracy of OSMTracker improves when you have an internet connection > and it can go as high as 3m or less, it is necessary to check the level of > accuracy when picking a way point. What usually helps is when you import > the track and waypoints into JOSM, then you can place the nodes more > accurately by looking at the imagery. > > Using Fieldpapers with Bing imagery may not be very helpful in informal > settlements where the houses are very close to each other, locating where > you are on the fieldpaper when in the field maybe challenging. If you can > afford it, acquiring several Garmin etrex 20 or 30 GPS units will prove > useful. > > Regards, > > Geoffrey. > > On Tue, Mar 1, 2016 at 1:35 AM, Gertrude Hope <[email protected]> > wrote: > >> Thank you Chris >> >> Gertrude >> On Mar 1, 2016 12:33 AM, "Chris Fleming" <[email protected]> wrote: >> >>> Blake has mostly covered it. But worth saying explicitly, if we assume >>> that the best you're going to get on a GPS is 5m, but your concern is that >>> you're mapping things that are much closer together - then the solution is >>> to combine the GPS and paper based approach. The important thing from a >>> navigation point of view is getting the relevant features correctly placed >>> reactive to each other. >>> >>> What you will find is that the combination of airial/gps and survey data >>> will bring the accuracy down. But ultimately, relative postition is the key. >>> >>> Cheers >>> Chris >>> >>> On Mon, 29 Feb 2016 at 17:43 Gertrude Hope <[email protected]> wrote: >>> >>>> Hi Blake, >>>> Thank you so much for The information. >>>> On Feb 29, 2016 7:31 PM, "Blake Girardot" <[email protected]> wrote: >>>> _______________________________________________ >>>> HOT mailing list >>>> [email protected] >>>> https://lists.openstreetmap.org/listinfo/hot >>>> >>> >> _______________________________________________ >> HOT mailing list >> [email protected] >> https://lists.openstreetmap.org/listinfo/hot >> >> >
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