I'm thrashing around in the dark here, trying to read the 'ele' tags in a GPX
file. I can't find actual examples anywhere, or help with the API.
The map itself is quite successful for showing (and toggling) gpx tracks,
and displaying the lengths. See wed-slow-fast27mar.htm but I'd now like to
add the total ascents as well. How do you implement the read function?
var runslow = "../gpx/wed-slow-06feb13.gpx"
// read function for runslow here //
// then calculate the ascent:
var eles = runslow.getElementsByTagName("ele");
for (var i=0, len=eles.length; i<len; i++) {
if (eles[i] > eles[i-1])
ascent = ascent + (eles[i] - eles[i-1]);
--
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