Started by Cory McAlpin, November 06, 2016, 01:03:24
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Quote from: Christian on November 20, 2016, 22:20:34Elevation gain = elevation (uphill)IMHO
Quote from: michaelbechtold on November 20, 2016, 22:42:07Elevation collected from GPS in mobile devices is like rolling the dice around the true curve.This adds to both, uphill and downhill count.When I am interested in elevation stats, I first run the track through the "fill elevation" task (edit-more-fill elevation in track screen). You will see the changes easily in your examples. And both should be pretty close afterwards.
Quote from: michaelbechtold on November 21, 2016, 00:13:29OK. Fill elevation is one of the functions for a completed track. This does substitute the GPS elevation by data from SRTM files that are stored on your device or read via internet. Those SRTM data from satellite screening are not jumping up and down like crazy. This is why your elevation ups and downs will come down. And such happens for all tracks you adjust via fill elevation. If the tracks ate bear to each other, then the total up and down hill will be near to each other, too. Makes sense ?Gesendet von meinem LG-H850 mit Tapatalk
Quote from: lor74cas on November 21, 2016, 12:43:28For global info: http://www.locusmap.eu/everything-you-always-wanted-to-know-about-elevation-in-locus-but-were-afraid-to-ask/I do not have a pressure sensor so when I found that altitude data of the recorded track with just gps are crazy I tried to solve.First you need a good accuracy of recorded track points:settings -> track rec -> choose your profile settings --> requested accuracy set a strict value (for me 30mt)Second you can have better SRTM values using HGT files with 1" arc insted of 3"http://help.locusmap.eu/topic/hgt-elevation-data-display-if-both-1%E2%80%9D-and-3%E2%80%9D-resolution-hgt-files-are-present-in-the-srtm-directoryhttp://www.viewfinderpanoramas.org/Coverage%20map%20viewfinderpanoramas_org1.htmhttp://www.viewfinderpanoramas.org/dem3.htmland if you want a costant application of srtm data and bypass the "fill data.." after track recorded use this:in settings -> gps and position -> altitude manager -> settings -> srtm data -> replace gps values