Altitude change without gps fix
I use Locus Map for hiking. In a forrest there is often no gps fix. At the moment, there is no altitude changed on the dashboard without a gps fix. If a device supports a barometer (Nexus 5), it should be possible to show the current altitude based on barometer data and without a gps fix.
It is obvious, that I need a gps fix to auto calibrate the barometer. But after calibration, it should be possible to show the current altitude without a gpx fix.