text: #ifndef SPEED_PANEL_H
  #define SPEED_PANEL_H
  
  #include <ros/ros.h>
  #include <QApplication>
  #include <QLabel>
  
  #include <igvc_msgs/velocity_pair.h>
  
  #include <rviz/panel.h>
  #include "speedometer.h"
  class QLineEdit;
  
  namespace rviz_plugins
  {
  class SpeedPanel : public rviz::Panel
  {
    Q_OBJECT
  public:
    SpeedPanel(QWidget* parent = 0);
  
  private:
    void subCallback(const igvc_msgs::velocity_pair& msg);
    double speed;
    Speedometer* speedometer;
  
  public Q_SLOTS:
  
  protected Q_SLOTS:
  
  protected:
    ros::Subscriber sub;
    ros::NodeHandle nh_;
    QLabel* velocity_label;
    QLabel* velocity_right_label;
    QLabel* velocity_left_label;
  };
  }
  
  #endif  // SPEED_PANEL_H