- double ground_altitude = cal_data().ground_altitude;
- if (height_series == null && ground_altitude != AltosLib.MISSING && altitude_series != null) {
- height_series = add_series(height_name, AltosConvert.height);
- for (AltosTimeValue alt : altitude_series)
- height_series.add(alt.time, alt.value - ground_altitude);
+ if (height_series == null) {
+ double ground_altitude = cal_data().ground_altitude;
+ if (ground_altitude != AltosLib.MISSING && altitude_series != null) {
+ height_series = add_series(height_name, AltosConvert.height);
+ for (AltosTimeValue alt : altitude_series)
+ height_series.add(alt.time, alt.value - ground_altitude);
+ } else if (speed_series != null) {
+ height_series = add_series(height_name, AltosConvert.height);
+ speed_series.integrate(height_series);
+ }