63ChevyII wrote:When you save a current track on your GPS unit, am I correct in thinking that it removes a large number of points, thus reducing the mileage and accuracy of the file? Is there a way to prevent this from happening?
I'm not aware that a Garmin GPS does any sort of truncation while saving a track. I have seen some software reduce the number of points when importing a Garmin gdb track file or converting it to other formats. But if you bring a track up in Garmin software it should give you all the points that were originally recorded.
When you setup track recording you have a number of options like every so many feet, or so many seconds or auto. I think auto is some sort of black magic and I just leave it on that. That's been fine for the accuracy I need. Remember that there is going to be GPS location drift anyway (sometimes considerable) so a large number of points that aren't accurate from a position standpoint are sorta worthless.