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How to get markers pose in a file?

Hi, I am using different AR tags and need to know how I can save their poses into a text file so I can use their poses in a MATLAB code. When I use "echo", it gives me a long list with different...

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waiting for the map problem

I follow the tutorial " slam_gmapping Tutorials MappingFromLoggedData " , and when I enter this command " rosrun map_server map saver " , I have this message " waiting for the map " and after there are...

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Storing the data inside an array as rosbag

Hi, Is there a way I can store data in my array (inside a c++ program) as rosbag? Just like I can store it as txt or csv file. I know we can store data being published over a ros topic as rosbag but I...

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dependency issue Hydro Raspberry Pi

I am following the Wiki instructions on a NOOB install of hydro on Raspberry Pi Exception caught during install: Error processing 'ros_comm/rosbag' : [ros_comm/rosbag] Checkout of...

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rosbag recording resolution / create cyclic snapshots

Hi guys, as we have a huge amount of data to record, we would like to be able to reduce the resolution of the data being recorded. From looking at rosbag I don't think its possible yet, right? As...

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Tools for rosbag analysis - Others that are used?

What tools have people developed and use for rosbag analysis? I know of rqt_bag (which is an absolutely awesome tool), which allows you to browse the topics in a concise timeline, and using that in...

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Creating a bag file out of a image sequence

Let's say I have a series of images and want to create a bag file out of them to use as input for the camera calibration. Is it even necessary to create the bag for the calibration or is there another...

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Can't read bagfile containing custom messages

I have a bag file with video and imu data defined with custom messages that I want to read (especially topics /capture and /imu_raw). I know from documentation what the structure of the custom messages...

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What's the right way to call rosbag in a launch file?

Hi there, Since the Python API for rosbag is not really documented, I've decided to just start a couple bags from a launch file. I want to record some topics from my robot, and some from my desktop...

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Record tf_static with rosbag

Hi all, I'm trying to record all my topics into a bag, running `rosbag record -a`. However, rosbag doesn't record the `/tf_static` topic. How can I arrange this? Thanks

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How do I best save a transform to a file?

Since it seems the rosbag C++ API doesn't work very well with the tf library, and I cannot find a simple way of saving ROS datatypes to files, I don't know how to best save a transform that I have...

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Synchronizetion of Gazebo-log and Rosbag replay

Hello. I am interesting in recording and replaying simulated scenario in gazebo. I am looking to record both the simulated environment and the movement of my robot inside of it, and also my robot's...

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Trouble Including rosbag

Hello, I am trying to follow this tutorial: http://wiki.ros.org/rosbag/Code%20API#cpp_api , but am running into errors with the inclusion of rosbag. When I try to run the example code, I get a jillion...

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qt creator convert

hi, i record with rosbag a viedeo. I want to viaualize the video in a gui, with a qt creator, but rosbag records only in the Format Mono_8, buti need a rgb format to play the video. How can i decode...

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How to launch rxbag or rqt_bag with the --clock option

Hello I am launching the playback of a bag file using rosbag play. Because I want to emulate the clock at the time of recording I use the --clock option along with the use_sim_time=true parameter...

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record rosrun tf tf_echo /map /base_link

I run tf tf_echo /map /base_link and compute exact data needed: ... At time 1407419581.729 - Translation: [-8.999, -22.000, 0.000] - Rotation: in Quaternion [-0.000, 0.000, 0.850. 0.526] in RPY [0.000....

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created tf listener, how to rosbag?

I run `tf tf_echo /Pioneer3AT/map /Pioneer3AT/base_link` and compute exact data needed (so far so good): ... At time 1407419581.729 - Translation: [-8.999, -22.000, 0.000] - Rotation: in Quaternion...

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Replay rosbags recorded with --split option

Hi, I have recorded number of rosbags using --split option, say "file_0.bag", "file_1.bag", "file_2.bag" and so on to build a map. My question is: how to play them back one after the other. Using `$...

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can "rosbag filter" create a new bag file with multiple topics within it?

Hello, I have a bagfile with a lot of topics in it. For some reason I would like to filter out 4 topics of that bagfile into a new bagfile: rosbag filter old_bag.bag new_bag.bag...

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[rosbag] Synchronisation between camera_info and image

Hello guys, Quick question: My setup is Kinect => Depth Image => MoveIt =>Octomap I want to record what's happening in the real world and to be able to replay it later on, so that the same...

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