On Thu, Feb 14, 2008 at 2:04 AM, Robert Vollmert <<a href="mailto:rvollmert-lists@gmx.net">rvollmert-lists@gmx.net</a>> wrote:<br><div class="gmail_quote"><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
Hello,<br>
<br>
On Feb 13, 2008 9:41 AM, Gregory <<a href="mailto:nomoregrapes@googlemail.com">nomoregrapes@googlemail.com</a>> wrote:<br>
> Maybe (I possibly thought this when I started) so nobody knows<br>
> where I live/start, but I could easily not worry about that.<br>
<br>
<br>
On Feb 13, 2008, at 19:14, Karl Newman wrote:<br>
> Yeah, I've been collecting traces, too, but not yet uploading them<br>
> because I don't really want the cluster of points around my house.<br>
> I found a graphical editor that can edit traces (GPSTrackMaker) but<br>
> I haven't had time to edit them for uploading yet.<br>
<br>
I believe gpsbabel supports this kind of operation:<br>
<br>
gpsbabel -i gpx -f raw.gpx -x<br>
radius,exclude,distance=1.5M,lat=30.0,lon=-90.0 -o gpx -F filtered.gpx<br>
<br>
should remove all points within 1 1/2 miles of the specified lat/lon<br>
pair from raw.gpx, saving the output in filtered.gpx. (I haven't<br>
tested this.)<br>
<br>
See also <a href="http://www.gpsbabel.org/htmldoc-development/" target="_blank">http://www.gpsbabel.org/htmldoc-development/</a><br>
filter_radius.html .<br>
</blockquote><div><br>I tried exactly that filter first, a while ago. For some strange reason, that filter only works on waypoints, not trackpoints. I think I read somewhere that the author said it "didn't make sense" to filter trackpoints like that--didn't know what to do with the points after the gap (hint: new track segment).<br>
<br></div><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"><br>
Would it make sense to add these kind of filters to the GPX upload<br>
facility to encourage more people to upload their traces?</blockquote><div><br>It would probably encourage more people like me to upload. However, since I carry my GPS around with me almost everywhere (at least when I'm going places where I don't yet have tracks), I'd probably need to filter out a bunch of useless stuff anyway, such as the cluster of points when I stop at a store or something.<br>
<br></div><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">I'd also<br>
like some automatic time shift (to say the first of the month, at<br>
0:00)...</blockquote><div><br>What's the purpose of that change? To disguise the actual timestamps?<br></div></div><br>Karl