I think the SVGs will work perfectly. I want to render the profile from, say, mile 1080 to 1093. Even better would be to overlay that with another similar stretch, for comparison. The SVG looks easy to parse and correlate with real miles/altitudes. Thank you... and thanks again for this awesome site.

Hey Adam,

Yes, I know what you're looking for now. I remember having issues with the GPS data that I had found. I had to do a bunch of doctoring of the data, but I also came-up with a system that auto-scaled the elevation data based on the locations (and known distances) of points nearby the trail. Some parts of the trail data would be super fine-grained but others would have less detail. When I correlated the coordinates to the locations of known features, I was able to down-scale the elevation that so that it would be consistent within a given section. That's what you see in the elevation profile (both on the site and in the PDF).

Are you looking for the elevation numbers themselves (GPX) or the rendered elevation charts? Building a GPX file of the auto-scaled elevation data is more work than I want to do (unless it's a popular idea), but if you're just looking for the charts, you can hit the elevation URL for each of the sections you're interested in - and then put them together. For example, http://www.wikitrail.org/sections/profile/at/3001 is the profile from the first section, http://www.wikitrail.org/sections/profile/at/3002 is the next section and so on. (The charts are SVG, so if you want to turn them into something with fixed dimensions, you'll have to screenshot them.)

Hope this helps!

-Matt

Thanks for the link, that data is very close to what I need. How do you generate your visual elevation profiles? Most data I find is either: mile markers+notable locations or latlongs+elevation. I'd really like to correlate the two types of data, as you've done. I can sort-of calculate the mile marker using gps coords, but it's not very accurate.

Basically, I want to be able to generate your elevation profiles exactly as they are, except with arbitrary start and end mile markers.

Hey, thanks for the suggestion! I don't have gpx files (and would rather not build them), but you can find elevation data either in the Trail Guide PDFs or on the page for each section (e.g. http://www.wikitrail.org/sections/view/at/3001/springer-to-neels-gap - click 'Elevation Profile').

If you really want the information in gpx format, I would suggest checking out this website: http://guymott.com/atgps.html

Thanks again!
-Matt