La API de rosbag informa una referencia indefinida a `rosbag :: Bag :: close () '...

writebag.cpp

#include "ros/ros.h"
#include "geometry_msgs/Point.h"
#include <rosbag/bag.h>
#include <std_msgs/Int32.h>
#include <std_msgs/String.h>
 
/**
 * This tutorial demonstrates simple sending of messages over the ROS system.
 */
int main(int argc, char **argv)
{
 
  ros::init(argc, argv, "eyeInScreen");
 
  /**
   * NodeHandle is the main access point to communications with the ROS system.
   * The first NodeHandle constructed will fully initialize this node, and the last
   * NodeHandle destructed will close down the node.
   */
  ros::NodeHandle n;
 
 
 // ros::Publisher chatter_pub = n.advertise<geometry_msgs::Point>("/point", 10);
 
  ros::Rate loop_rate(10);
    rosbag::Bag bag;
    bag.open("test.bag", rosbag::bagmode::Write);
  int count = 0;
 
  while (ros::ok() && count<1000)
  {
    count++;
    std_msgs::String str;
    str.data = std::string("foo");
 
    std_msgs::Int32 i;
    i.data = count;
    bag.write("chatter", ros::Time::now(), str);
    bag.write("numbers", ros::Time::now(), i);
    ros::spinOnce();
 
    loop_rate.sleep();
    ++count;
  }
 
 
    bag.close();
  return 0;
}

readbag.cpp

#include "ros/ros.h"
#include "geometry_msgs/Point.h"
#include <rosbag/bag.h>
#include <rosbag/view.h>
#include <std_msgs/Int32.h>
#include <std_msgs/String.h>
 
#include <boost/foreach.hpp>
#define foreach BOOST_FOREACH
 
/**
 * This tutorial demonstrates simple sending of messages over the ROS system.
 */
int main(int argc, char **argv)
{
 
  ros::init(argc, argv, "eyeInScreen");
 
  /**
   * NodeHandle is the main access point to communications with the ROS system.
   * The first NodeHandle constructed will fully initialize this node, and the last
   * NodeHandle destructed will close down the node.
   */
  ros::NodeHandle n;
 
 
  ros::Publisher chatter_pub = n.advertise<geometry_msgs::Point>("/point", 10);
 
  ros::Rate loop_rate(10);
 
  int count = 0;
 
  rosbag::Bag bag;
  bag.open("test.bag", rosbag::bagmode::Read);
 
  std::vector<std::string> topics;
  topics.push_back(std::string("chatter"));
  topics.push_back(std::string("numbers"));
 
  rosbag::View view(bag, rosbag::TopicQuery(topics));
  foreach(rosbag::MessageInstance const m, view)
  {
      std_msgs::String::ConstPtr s = m.instantiate<std_msgs::String>();
      if (s != NULL)
          std::cout << s->data << std::endl;
 
      std_msgs::Int32::ConstPtr i = m.instantiate<std_msgs::Int32>();
      if (i != NULL)
          std::cout << i->data << std::endl;
  }
 
  bag.close();
 
 
  return 0;
}

Tiempo de compilación

... referencia indefinida a `rosbag :: Bag :: close () '
... referencia indefinida a` rosbag :: View :: ~ View ()'
... referencia indefinida a `rosbag :: Bag :: ~ Bag () '
.....
Dado que el archivo CmakeLists.txt no agrega dependencia rosbag, simplemente agregue el elemento rosbag en CMakeLists.txt y package.xml.

find_package(catkin REQUIRED COMPONENTS 
roscpp 
rosbag 
std_msgs 
....
)

  <build_depend>roscpp</build_depend> 
  <build_depend>std_msgs</build_depend>
  <build_depend>rosbag</build_depend> 
....

O use el siguiente comando para reconstruir el proyecto:

~/cat_ws/src$catkin_create_pkg bagdemo roscpp rospy rosbag std_msgs geometry_msgs

Además, la configuración de la zona horaria de la computadora debe ser correcta ; de lo contrario, se puede reportar un error durante la operación: Intentó insertar un mensaje con un tiempo menor a ros :: TIME_MIN Aborted (core volcado)

La API de rosbag informa una referencia indefinida a `rosbag :: Bag :: close () '...

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