#Get advanced call recorder to reindex how to

Time synchronization occurs based on the global timestamps at which messages were received. Rosbag play reads the contents of one or more bag file, and plays them back in a time-synchronized fashion. Topics: /points 119 msgs 100.0 Hz : geometry_msgs/Point $ rosbag info -y -k duration /path/to/my.bag Print information only on the given field (requires -y). Display a summary of the contents of the bag files.

#Get advanced call recorder to reindex how to

See the cookbook for an example of how to load this representation in code. To output a machine-readable representation, use -yaml. Rosbag info displays a human-readable summary of the contents of the bag files, including start and end times, topics with their types, message counts and median frequency, and compression statistics.

Use the UDP transport hint when subscribing to topics.

Use the TCP_NODELAY transport hint when subscribing to topics.Record all topics subscribed to by a specific node $ rosbag record -node=/joy_teleop.Only record NUM messages on each topic.Lowering this value will result in more writes to disk. This is a buffer within the bag file object. Record to chunks of SIZE KB (Default: 768). Lowering this value might result in messages being dropped before they reach the recording process.Īdvanced. This is the message queue of the recorder object, before messages are being passed on to the bag. Use an internal buffer of SIZE MB (Default: 256, 0 = infinite). $ rosbag record -split -duration 10m -max-splits 6 /chatter $ rosbag record -split -size 1024 -max-splits 3 /chatter This creates a fixed size or duration recording. Split bag at most MAX_SPLITS times, then begin deleting the oldest files.max-splits=MAX_SPLITS New in ROS Kinetic $ rosbag record -split -duration=2h /chatter $ rosbag record -split -duration=5m /chatter $ rosbag record -split -duration=30 /chatter Split the bag when maximum size or duration is reached $ rosbag record -split -size=1024 /chatter.$ rosbag record -O session2_090210.bag /chatter Prepend PREFIX to beginning of bag name before date stamp.Specify the maximum duration of the recorded bag file.x EXCLUDE_REGEX, -exclude=EXCLUDE=REGEXĮxclude topics matching the given regular expression (subtracts from -a or -e). Publish a message when the record begin to write a new bag (topic = ' begin_write'). Record all topics that contain sensors in their name: $ rosbag record -e '(.*)sensors(.*)' $ rosbag record -e '/(.*)_stereo/(left|right)/image_rect_color' Match topics using regular expressions.

rosbag record -a will likely miss initial messages published on any topic. Note that newly published topics are discovered by periodically polling the master. Record a bag file with the contents of the specified topics.If you are recording messages at a high bandwidth, such as from cameras, it is strongly recommended you run rosbag record on the same machine as the camera, and specify the file destination as being on the local machine disk. To further reduce disk usage, you can compress bag files as they are created. This is the most performance and disk-friendly recording format possible. The file contains interlaced, serialized ROS messages dumped directly to a single file as they come in over the wire. Rosbag record subscribes to topics and writes a bag file with the contents of all messages published on those topics. These are described in greater detail in the following sections. Convert a bag file using Python expressions.Repair the messages in a bag file so that it can be played in the current system.Determine whether a bag is playable in the current system, or if it can be migrated.Play back the contents of one or more bag files.Record a bag file with the contents of specified topics.Ex: rosbag play -h will show you the most up-to-date list of all options available for your installation for the rosbag play subcommand. To ensure you are fully aware of all command-line options available in your version of ROS, simply run rosbag -h to see what subcommands are available for the rosbag command, then run rosbag -h to see what options are available for a given subcommand. IMPORTANT: This wiki page quickly goes out-of-date.