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2015-02-14 15:36:18 -0500 | asked a question | can't run gmapping scan I am following the tutorial here to make a simple map from already prepared data: http://wiki.ros.org/slam_gmapping/Tut... however, I get stuck at this step:
It takes forever, and does not finish. When I abort the process, I see the following on the screen:
I am new to ROS and gmapping, and would appreciate any help here. |
2015-02-07 16:16:45 -0500 | asked a question | rosbag doesn't display map in real-time on rviz I am following the gmapping tutorial, and it says: If you don't care to wait until the log playback and mapping process has finished before seeing some results, then you can watch the progress in rviz. I have rosbag of sample data running in a different terminal. I added a display to rviz with topic /map, but it doesn't seem to show anything. There is an exclamation mark beside "Message". Also, when I type in rqt_graph, no messages are being published to topic /map. How can I resolve this? I appreciate any help as I am new to this. Thanks |
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2015-01-10 16:13:05 -0500 | asked a question | apply joint effort service call doesn't do much in gazebo Hi, I have a ros node that connects to my gazebo model. It makes a service call to rotate the joints (wheels). If I perform the ros service call from the cmd line I am able to see the wheels move. However, from the cpp node, it doesn't seem to move. Here is my cpp code: I have this in my main function of my cpp file. I am starting with Gazebo, so your help is appreciated |
2015-01-10 15:06:53 -0500 | asked a question | Massless Model in Gazebo Hi, I have a model in Gazebo. Upon applying little bit of force it overreacts, so it seems the model is almost massless. I tried assigning mass by using the "inertial mass" tag in the model sdf file, but it doesn't seem to do much. Here is my link tag: </link> I am starting with gazebo, so I appreciate any help. |
2014-12-13 17:07:33 -0500 | asked a question | get_link_state of hokuyo in Gazebo I have a simple robot model that includes the hokuyo lidar in model.sdf: The lidar shows up on Gazebo under the name "link" probably because in the hokuyo built-in model, the link has the name "link". I am trying to get the state of the lidar link by calling the get_link_state: but it results in "link not found" errors. I tried "hokuyo::link" as the name, but ros doesn't like that either. I guess my question is, how do I retrieve the link state of the included models such as camera, hokuyo, etc? They all show up with a link name "link" on the Gazebo gui. |