>>>>> "Daniel" == Daniel Johnson <[EMAIL PROTECTED]> writes:

Daniel> My two biggest annoyances with the device.  It can take as
Daniel> much as two minutes to access the tracklogs with a big old
Daniel> "loading" screen.  Tracklogs only store points based on adding
Daniel> a new point when you travel so much distance.  For many
Daniel> applications I would rather have a datapoint every second or
Daniel> few seconds instead.  

I bought a BU-353 recently.  Plug it in, it starts sending NMEA
sentences at 4800 baud.  Gpsd was talking to the device, and I used
"gpspipe -r" to cat the data into a file.  I've got complete
second-by-second track information for a trip to the bay area i took a
couple months ago.  I haven't gotten around to figuring out how to
draw it nicely on a map, but the data is there.

Daniel> Garmin does it like that.

Actually the garmin I have is a little more clever.  It does something
like this: if the new point is a reasonable projection from the last
two points, drop the last point.  If you are clicking along at a
constant speed and direction, it'll drop the intermediate redundant
points from the track data.  That's with a 12CX.  Ends up giving you
pretty good fidelity on the route you took without wasting precious
storage.


-- 
Russell Senior         ``I have nine fingers; you have ten.''
[EMAIL PROTECTED]
_______________________________________________
PDXLUG (a Portland Linux user group) mailing list
[email protected]
http://lists.pdxlug.org/mailman/listinfo/pdxlug
IRC: irc.freenode.net #pdxlug &amp; #orlug

Reply via email to