gboolean vik_track_get_minmax_alt ( const VikTrack *tr, gdouble *min_alt, gdouble *max_alt );
void vik_track_marshall ( VikTrack *tr, guint8 **data, guint *len);
VikTrack *vik_track_unmarshall (guint8 *data, guint datalen);
void vik_track_apply_dem_data ( VikTrack *tr);
gboolean vik_track_get_minmax_alt ( const VikTrack *tr, gdouble *min_alt, gdouble *max_alt );
void vik_track_marshall ( VikTrack *tr, guint8 **data, guint *len);
VikTrack *vik_track_unmarshall (guint8 *data, guint datalen);
void vik_track_apply_dem_data ( VikTrack *tr);