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play bag file using rosbag

robag play xxxxx.bag --clock

it will publish all the topics in bags file.

Write subcriber in your code to get values.

play bag file using rosbag

robag play xxxxx.bag --clock

it will publish all the topics in bags file.

Write subcriber in your code to get values.

play bag file using rosbag

robag play xxxxx.bag --clock

it will publish all the topics in bags file.

Write subcriber in your code to get values.

check this for more info

ros::Subscriber sub = nh.subscribe("imu", 1000, &imuCallback, this);    

void Callback(const sensor_msgs::Imu::ConstPtr& msg)
{

    double lax = msg->linear_acceleration.x;
    double lay = msg->linear_acceleration.y;
    double laz= msg->linear_acceleration.z;   
}