RoadUser has no error field.Now is precision again

include/objects.hpp

@@ -61,7 +61,7 @@ struct RoadUser{
     std::vector<uint16_t> camera_id;
     float latitude;
     float longitude;
-    float error;       //in meter
+    float precision;       //in meter
     std::vector<uint16_t> object_id;      //local tracker id
     uint8_t speed;
     uint16_t orientation;
@@ -72,7 +72,7 @@ struct RoadUser{
     template<class Archive>
     void serialize(Archive & archive)
     {
-            archive( camera_id, latitude, longitude, object_id, error, speed, orientation, category);
+            archive( camera_id, latitude, longitude, object_id, precision, speed, orientation, category);
     }
 
 };