Hi,


I am using the function "measure distance" of Osmand with the option "snap 
to road" enabled to create tracks for pedestrians. In various specific 
places I obtain tracks with the elevation values grossly wrong. Below there 
are two examples (see the elevations with the minus sign).


I am using:


Osmand 3.2.7 on Samsung SM-A500FU, Android version 6.0.1;

the off-line maps, namely Italy_trentino-alto-adige_europe.obf downloaded 
2019/01/17, and the World_altitude_correction_WW15MGH.extra downloaded 
2019/01/18;

the in-app offline routing with the pedestrian profile;


How can I solve the problem?


Thank you, Bruno G.




===================================

<?xml version='1.0' encoding='UTF-8' standalone='yes' ?>

<gpx version="1.1" creator="OsmAnd" 
xmlns="http://www.topografix.com/GPX/1/1"; 
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"; 
xsi:schemaLocation="http://www.topografix.com/GPX/1/1 
http://www.topografix.com/GPX/1/1/gpx.xsd";>

  <metadata>

    <name>2019-01-19_00-01_Sat</name>

  </metadata>

  <trk>

    <name>2019-01-19_00-01_Sat</name>

    <trkseg>

      <trkpt lat="46.0002186" lon="11.0311961">

        <ele>1880.599</ele>

      </trkpt>

      <trkpt lat="46.0001217" lon="11.0311961">

        <ele>1882.5</ele>

      </trkpt>

      <trkpt lat="45.9999727" lon="11.0311747">

        <ele>-2553.25</ele>

      </trkpt>

      <trkpt lat="45.9998832" lon="11.0311317">

        <ele>1126.25</ele>

      </trkpt>

      <trkpt lat="45.9998236" lon="11.0311317">

        <ele>2341</ele>

      </trkpt>

      <trkpt lat="45.9997342" lon="11.0311532">

        <ele>2228.47</ele>

      </trkpt>

    </trkseg>

  </trk>

</gpx>

========================

<?xml version='1.0' encoding='UTF-8' standalone='yes' ?>

<gpx version="1.1" creator="OsmAnd" 
xmlns="http://www.topografix.com/GPX/1/1"; 
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"; 
xsi:schemaLocation="http://www.topografix.com/GPX/1/1 
http://www.topografix.com/GPX/1/1/gpx.xsd";>

  <metadata>

    <name>2019-01-19_12-59_Sat</name>

  </metadata>

  <trk>

    <name>2019-01-19_12-59_Sat</name>

    <trkseg>

      <trkpt lat="45.9492624" lon="11.0003614">

        <ele>2027.882</ele>

      </trkpt>

      <trkpt lat="45.9491356" lon="11.0003614">

        <ele>1936.75</ele>

      </trkpt>

      <trkpt lat="45.9490162" lon="11.0004902">

        <ele>1636.25</ele>

      </trkpt>

      <trkpt lat="45.9488447" lon="11.0004902">

        <ele>1644.5</ele>

      </trkpt>

      <trkpt lat="45.948509" lon="11.0004258">

        <ele>1649.75</ele>

      </trkpt>

      <trkpt lat="45.9483076" lon="11.0003185">

        <ele>2216</ele>

      </trkpt>

      <trkpt lat="45.9481434" lon="11.0002327">

        <ele>2344.75</ele>

      </trkpt>

      <trkpt lat="45.9480465" lon="11.0001254">

        <ele>1425.25</ele>

      </trkpt>

      <trkpt lat="45.9479495" lon="11.000104">

        <ele>857</ele>

      </trkpt>

      <trkpt lat="45.94786" lon="11.000061">

        <ele>-1740.25</ele>

      </trkpt>

      <trkpt lat="45.9477481" lon="10.9999752">

        <ele>1675.75</ele>

      </trkpt>

      <trkpt lat="45.9476436" lon="10.9998465">

        <ele>1686.5</ele>

      </trkpt>

      <trkpt lat="45.9475243" lon="10.9996963">

        <ele>1693</ele>

      </trkpt>

      <trkpt lat="45.9474198" lon="10.999589">

        <ele>1695</ele>

      </trkpt>

      <trkpt lat="45.9473154" lon="10.9995246">

        <ele>1695.5</ele>

      </trkpt>

      <trkpt lat="45.9472259" lon="10.9994602">

        <ele>1697.25</ele>

      </trkpt>

      <trkpt lat="45.9470916" lon="10.9993529">

        <ele>1703</ele>

      </trkpt>

      <trkpt lat="45.9470692" lon="10.9992671">

        <ele>1705.954</ele>

      </trkpt>

    </trkseg>

  </trk>

</gpx>




How can I solve the problem?

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