How to display 300+ GPX cycling routes over a Google Maps base layer

To your 0.4km "halo" of anonymity around your house, you need http://www.gpsbabel.org/. As per https://wiki.openstreetmap.org/wiki/Using_filters_with_GPSBabel#Exclude_points_within_given_radius_.28ie._privacy_issue.29 instructions, you could do (assuming you live at 38.61,-90.25): gpsbabel -i gpx -f infile.gpx -x radius,distance=400m,lat=38.61,lon=-90.25,nosort,exclude -o gpx -F outfile.gpx You might wish to add a few random exclusion points near your house. Your tracks have enough waypoints that it would be easy to back-calculate where you live. Leaving only tracks with time and elevation, I can get the files down to ⅓ of the original size. If you wanted smaller, there are ways of filtering and smoothing tracks to reduce points in gpsbabel, but these might lose some of the detail you needed to capture every turn in every road. For web display, if tmcw shows up in this thread: what he said, by way of pre-emptive seconding ☺

Experiment 1: Google Maps 1. Go to Strava activity, export as GPX 2. http://www.gpsvisualizer.com/map_input?form=googleearth via gpsvisualizer.com 4. Right-click on the output kmz file "Copy Link Location". 5. Open Google Maps. Paste the kmz file link in google maps search box. Presumably the GPSVisualizer link won't live forever, so you need to move your KMZ files to some hosted server eventually. I can't find a way to display multiple kmz files on google maps, but a kmz file can contain multiple tracks. See https://maps.google.com/maps?q=http://kml.lover.googlepages.com/leTourDeFrance2005.kmz. Here are my kmz output files (these links probably won't stay working long): http://www.gpsvisualizer.com/display/20131202124837-21774-map.kmz http://www.gpsvisualizer.com/display/20131202130515-23128-map.kmz View them in google maps (probably won't stay working long): - https://maps.google.com/maps?q=http://www.gpsvisualizer.com/display/20131202124837-21774-map.kmz - https://maps.google.com/maps?q=http://www.gpsvisualizer.com/display/20131202130515-23128-map.kmz Experiment 2: Google Earth 1. Download google earth 2. Translate GPX to KMZ as above 3. Save the output kmz files to your computer. 3. Load one or more kmz files into Google earth This option is nice if you want to have all your data off-line. Google earth will display multiple kmz files (I tried it with my two files above). There are probably many ways to translate from GPX to KMZ. I used GPSVisualizer.com because it was convenient. Could probably download a utility that will do them in bulk if you want...

And if you're at all OK with using command line tools: https://github.com/mapbox/togeojson will convert the gpxes to geojson. then https://github.com/mapbox/geojsonio-cli will upload it to geojson.io http://geojson.io/#id=gist:anonymous/9feca8555bf77659e408&map=14/38.5870/-90.3299 It will look something like this: npm install -g togeojson geojsonio && togeojson 12_09_2012.gpx | geojsonio (You need to have something called node.js installed for either of those to work.)

http://geojson.io/#id=gist:anonymous/9211380cae7c164b0b36&map=11/38.7055/-90.1684.

Does the author of the multi-map thing know it's broken? Seems like something that he could fix on his end. Strava itself has a "heat map" thing that miiight be suitable. Just takes a second, try it out on their site.

> Does the author of the multi-map thing know it's broken? The problem is is that it's not really 'broken' (at least in any fixible way); Strava API v2 and v3 has removed public access to that data. The author knows about the changes (and has worked several times to restore what functionality he can), but it's taken away, now, and the access to the data required to make it work like it did previously is gone. A heel-turn quasi-shady move on Strava's part, to be sure; but they've thrown their lots in with denying their users access to their created data. The backlash was strong, but died down quickly. It ain't coming back.> Strava itself has a "heat map" thing that miiight be suitable.Yeah, I was real excited for a second when they rolled that out about 3 months ago, but it's a total flop. It http://i.imgur.com/TM2Rg3L.png, and looks worse once you drill down to whatever http://i.imgur.com/5iSZ7xk.png they've capped it at. I can't tell much from that about which roads I've been on. In summary, I guess it does passably well on the "heat" part, and terribly bad on the "map" part.

I understand the changes to the API. But this guy doesn't have to approach it as "a member of the public". He could have an account for his app and log in with it. I've done that kind of thing in lots of different web sites that added similar restrictions. Sorry the heat map sucks. I'd never really checked it out. I took one shot at making something with the google maps API, got kinda frustrated by it, and quit. Wish I knew an app that would work for you but I can't really think of one.

> But this guy doesn't have to approach it as "a member of the public". He could have an account for his app and log in with it. I'm trying to display my data to the public, though. I have the GPX data and want to display it over a (GMaps or OpenStreetmap) basemap while placing no restrictions on who can see it. I appreciate the suggestions and the effort, though; and I sympathize with your frustrations at using the gmaps API... it was a fish-out-of-water thing for sure. I feel a bit better knowing that it wasn't just me, so thanks for that.

I would pose this question to the guy who built VeloViewer.com because I remember him writing some stuff on his blog about possibly building a heatmap visualization. I've kicked some emails around with him and he is very cool and enthusiastic about this stuff.