<html><body><div style="color:#000; background-color:#fff; font-family:arial, helvetica, sans-serif;font-size:10pt">Tom<br><br>After these discussions, I looked for information to review and eventually improve my GPS measurements.<br><br>If your GPS is a Garmin, the wiki page http://wiki.openstreetmap.org/wiki/Garmin may help you to find information about your GPS.<br><br>For my Etrex Vista HCX, various options are proposed to have better measurements.<br><br>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.<br><br><br><div><span style="font-style:italic;color:rgb(0, 0, 191);font-weight:bold;">Pierre <br></span><br><blockquote style="border-left: 2px solid rgb(16, 16, 255); margin-left: 5px; margin-top: 5px; padding-left: 5px;"> <div style="font-family: arial, helvetica, sans-serif; font-size: 10pt;"> <div style="font-family: times new roman, new york, times,
serif; font-size: 12pt;"> <div dir="ltr"> <font face="Arial" size="2"> <hr size="1"> <b><span style="font-weight:bold;">De :</span></b> Tom Taylor <tom.taylor.stds@gmail.com><br> <b><span style="font-weight: bold;">À :</span></b> "talk-ca@openstreetmap.org" <talk-ca@openstreetmap.org> <br> <b><span style="font-weight: bold;">Envoyé le :</span></b> Mardi 20 novembre 2012 21h11<br> <b><span style="font-weight: bold;">Objet :</span></b> Re: [Talk-ca] GPS inaccuracy<br> </font> </div> <br>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.<br><br>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.<br><br>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.<br><br>Tom taylor<br><br>_______________________________________________<br>Talk-ca mailing list<br><a ymailto="mailto:Talk-ca@openstreetmap.org" href="mailto:Talk-ca@openstreetmap.org">Talk-ca@openstreetmap.org</a><br><a href="http://lists.openstreetmap.org/listinfo/talk-ca" target="_blank">http://lists.openstreetmap.org/listinfo/talk-ca</a><br><br><br> </div> </div> </blockquote></div> </div></body></html>