After being pointed out that the Velo Flow link from segments for some rides in Australia weren’t always returning results as expected I discovered I’ve not consistently using the right date from the Strava API. The majority of dates I use have been Greenwich Mean Time which is causing an issue when your ride happened to not be the same day as it was at the time in London.
Posts By: Ben Lowe
Seeing your rides and segments on maps is a complete no-brainer in terms of functionality for VeloViewer and the recent additions of Velo Flow and the Ride Details page along with the existing Segment Details page you now have many ways of viewing your rides. But what is the best map to display beneath your rides? Take your pick.
Great news! Strava have fixed the bug with their API that resulted in segments with people tied on time returning placings that were better than reality. Go update all your placings to get all your correct placings.
Velo Flow is a great way to visualise your rides but it really comes into its own when used to view group rides, be they club runs, sportives or races. Whichever the type of ride, the steps to go through to get the best Velo Flow of your ride are the same and very easy.
For a long time the main missing element on VeloViewer has been a ride details page. Well, not any more. View each of your rides’ stats, interactive map, elevation charts (including the gradient histogram – distance travelled at each gradient) and lists of all segments covered.
After coming across a great visualisation last week that animated GPS traces of staff commuting to Loughborough University I was inspired to try something similar with Strava rides and I’m very pleased with the result.
I’m currently multi-tasking my late night baby feeding with reading “My Time” by Bradley Wiggins and was interested to read the following: “The data we had been working on for road racing in 2012 was not power output or speed, but VAM. The average VAM for a big climb on the Tour in 2010 was 1,530-1,600: 1,530 on Plateau de Beille, 1600 on l’Alpe d’Huez.”
By far the most hits I get on VeloViewer are from the many on-line forums out there and primarily from the signature images that people like to use. Every forum seems to be different of what is and isn’t acceptable in terms of signature images so I’ve done my best to accommodate all the variations that people might want to use, it is down to you though to use an acceptable configuration for your forums. The latest version of the signature image addresses a number of issues raised by these users.
Your leaderboard positions on Strava segments can be a bit of a badge of honour but the significance of each of those positions can vary wildly. If you are 6th placed out of 3000 riders then that is pretty good going but 1st place out of just 2 riders is less so. In steps an suggestion from a forum to include a position percentile column and corresponding graphs, a few minutes later and the first incarnation of the position percentile appeared.
Your stats in VeloViewer are only as good as the data that is passed in from Strava, and around 1.5% (based on sample data I had a couple of months ago) of Strava segments seem to have bad data associated with them. The 2 main culprits are dodgy elevation data and non-matching distance data.