March 25, 2007

GPS Track Rant

Why is it that almost all GPS units decide that when you save your active track into memory that they should degrade functionality? Yes, it is true. Nearly all GPS units upon saving do two things. First, they discard the time and date information from the track. Secondly, they remove unnecessary” points from the track, sort of smoothing it out. This reduces the size of the saved track.

The second item, removing unnecessary” points isn’t entirely evil, but I do question it. However, removing the time and date stamp upon saving is terribly evil!

I went back into my saved GPS tracks to do some geo-association with photos from Switzerland and the matching program came up with a big clueless expression. The time and dates are all gone. Ugh!

I’m left with only one decent option, writing a program that will associate known times with some number of points in the track and then interpolate the remaining times. Sigh…


Switzerland Techie


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