Use only pressure sensor when measuring altitude
Is it possible to use only pressure sensor for altitude measurements? The thing is I use my SGS4 Active for work purpose which implies recording height profiles of certain accuracy. To this day I used OruxMaps which has the option of using only barometer for height measurements. The resulting curve is not perfect in terms of noise but after some postprocessing it all gets settled. Accuracy in this case is +- 20 cm which is enough for my needs. I found Locus to be far more mature and handy software comparing to OruxMaps, however I miss the abovementioned feature badly. I tested it the following way: Locus started with pressure sensor option "ON", then I raise and lower my phone roughly 0.5 meter and look upon values on dashboard - they change in 2 meter range which suggests GPS is the main source of altitude data. Am I right in thinking that currently Locus uses mainly GPS data and pressure sensor provides only small corrections? If so is there a possibility of adding another checkbox in Altimeter menu which restricts GPS Z-coordinate data completely? Thank you in advance.