Tom
After these discussions, I looked for information to review and eventually
improve my GPS measurements.
If your GPS is a Garmin, the wiki page
http://wiki.openstreetmap.org/wiki/Garmin may help you to find information
about your GPS.
For my Etrex Vista HCX, various options are proposed to have better
measurements.
Verify if your GPS as the WAAS option. Measure more often, in seconds or
meters. And it is suggested to deactivate the option Lock on road.
Pierre
>________________________________
> De : Tom Taylor <tom.taylor.s...@gmail.com>
>À : "talk-ca@openstreetmap.org" <talk-ca@openstreetmap.org>
>Envoyé le : Mardi 20 novembre 2012 21h11
>Objet : Re: [Talk-ca] GPS inaccuracy
>
>I redid some of my survey yesterday following Pierre and Bernie's suggestions.
>The results are more reasonable. After averaging, some of my points were
>showing error of +/- 2 m or less.
>
>In working on the new trace, I learned to shift the Bing images as necessary.
>Then I found that some buildings fit Bing while neighbours did not. I'm
>getting the feeling that, short of a definitive survey, a good map is a matter
>of careful judgement.
>
>I suspect at this point I should be writing on the Newbies list rather than
>this one. Thanks for your tolerance to this point. Certainly I'll still be
>monitoring this list.
>
>Tom taylor
>
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