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I made a few quick references to the mode by which I transfer my long and lat data to Google Earth for route display. I was asked whether I was capturing altitude information along with 2D position and the answer to this is yes. In fact, there are a variety of interesting ways of visualising this data. Although Google Earth does allow for some manipulation of this, I recently started using GPS Visualizer to play with this dimension. If you point it at your data file it can provide you with some interesting perspectives on your trips.
The weekend jaunt down country looks like this:
A second cool way of showing this same altitude mapping is to simply colour code the 2D route for altitude. This map was also generated at GPS Visualizer using the same dataset:
August 9th, 2008 at 12:49 pm
by chance is this diff. corrected?
August 11th, 2008 at 10:29 am
Alas, no WAAS. It’d be a nice thing, but as the chipset is SirfStarIII so it’s amazingly fast. Without the correction, I do get some pretty crazy error…sitting still shows as running off in all directions. The device has its use however.
August 14th, 2008 at 1:33 pm
Nice post, and thanks for the link to GPS-V. How did you make the table; do you have to output a plain text file first and then graph it or does GPS-V do the graph, as well? Is it possible to plot elevation over time travelled instead of distance? Would be fun to see some elevator riding on here (then again it is Dublin — maybe the Guinness bldg) or take it skydiving!
August 14th, 2008 at 3:26 pm
Your thinking way outside the box on that one Josh. Cool thought — skydiving — I’ll probably leave that one to you ;-)
The input table was GXML, although I think it took simple NMEA sentences. I do think time travelled as opposed to distance was an option through the service. Cool.