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Elevation gain: apply exponential smoothing and limit changes (defined change diff per sensor value).

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This commit is contained in:
Dennis Guse
2020-06-21 20:01:47 +02:00
parent 8a14bc46f6
commit c7db4f528e
4 changed files with 56 additions and 24 deletions
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src/androidTest/java/de/dennisguse/opentracks/util/PressureSensorUtilsTest.java
+6 -8
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@@ -20,10 +20,11 @@ public class PressureSensorUtilsTest {
}
}
// Simulate a sudden drop of elevation.
// test data
@Test
public void computeChanges_downhill() {
float[] sensorValues_hPa = new float[]{1015f, 1015.01f, 1015.02f, 1015.03f, 1015.04f, 1015.05f, 1015.06f, 1015.07f, 1015.08f, 1015.09f, 1015.10f, 1015.11f, 1015.12f, 1015.13f, 1015.14f, 1015.15f};
float[] sensorValues_hPa = new float[]{1015f, 1015.01f, 1015.02f, 1015.03f, 1015.04f, 1015.05f, 1015.06f, 1015.07f, 1015.08f, 1015.09f, 1015.10f, 1015.11f, 1015.12f, 1015.13f, 1018f, 1018.1f, 1018.1f, 1018.1f, 1018.1f};
float firstSensorValue = sensorValues_hPa[0];
// when
@@ -34,18 +35,15 @@ public class PressureSensorUtilsTest {
for (float v : sensorValues_hPa) {
PressureSensorUtils.ElevationChange elevationChange = PressureSensorUtils.computeChanges_m(lastUsedPressureValue_hPa, v);
if (elevationChange != null) {
if (elevationChange.getElevationChange_m() > 0) {
elevationGain_m += elevationChange.getElevationChange_m();
} else {
elevationLoss_m += elevationChange.getElevationChange_m();
}
elevationGain_m += elevationChange.getElevationGain_m();
elevationLoss_m += elevationChange.getElevationLoss_m();
lastUsedPressureValue_hPa = elevationChange.getCurrentSensorValue_hPa();
}
}
// then
assertEquals(0f, elevationGain_m, 0.01);
assertEquals(-1.08f, elevationLoss_m, 0.01);
assertEquals(1015.13, lastUsedPressureValue_hPa, 0.01);
assertEquals(-25.0f, elevationLoss_m, 0.01);
assertEquals(1018.01f, lastUsedPressureValue_hPa, 0.01);
}
}