Sensible VAM

Developer Reply
April 1, 2019, flyingflo

Thanks for your poorly researched feedback. I'll try to explain your issues. - The intended audience for this datafield are riders, who are unsatisfied with the stock vertical speed datafield of Garmin devices. If you find it useless, please use the stock datafield. - Averaging time can be chosen in the App-Settings. Try to set the filter length value to 1. This will result in a three seconds averaging (given the three seconds sample reate), as you wish. However, VAM as a performance metric doesn't make much sense on short climbs, thus the default value applies more smoothing and higher accuracy. - The settle time depends solely on the averaging filter length. The altitude sensor resolution is limited, thus accuracy requires longer filters. Everybody is free to configure it in the settings. - If you see a non-zero reading while stationary, please watch the altitude value and you will see that it changes as well. This is most likely the result of the automatic GPS-based calibration of the barometric altitude sensor after the initial GPS fix. The datafield correctly processes the changing altitude. I've never seen this after the calibration is done. The datafield can't distinguish if you're riding and elevator or if the sensor calibration is running, it just processes altitude changes over time.