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2020-05-29 14:01:59 -0500 | edited answer | Is there any way to find how much of the space if free/occupied/unmpapped? I am not sure if you want to evaluate your 2D navigation map or the 3D Octomap. But in either case you can write a node |
2020-05-29 13:53:22 -0500 | answered a question | Is there any way to find how much of the space if free/occupied/unmpapped? I am not sure if you want to evaluate your 2D navigation map or the 3D Octomap. But in either case you can write a node |
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2020-05-29 11:19:42 -0500 | commented answer | What is the input data for Octomap algorthim? I used a Microsoft Kinect 360. It's a RGB-D camera |
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2019-07-08 23:36:06 -0500 | commented question | readData and writeData function for ColorOctree visualization is giving white color in RVIZ els Have you tried visualizing your .ot file using octovis? If you can see your map in Octovis as expected, then you can ass |
2019-07-07 23:12:02 -0500 | commented question | readData and writeData function for ColorOctree visualization is giving white color in RVIZ els Did you try checking your subscribed topic in RViz? /octomap_full topic contains colors, while /octomap_binary topic dis |
2019-06-20 05:17:21 -0500 | answered a question | What is the input data for Octomap algorthim? I might be able to answer some of the questions you have. Octomap accepts sensor_msgs/PointCloud2 message type as its in |
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2019-06-20 04:51:35 -0500 | answered a question | Trouble installing ROS Melodic on Ubuntu Bionic 18.04 64-bit I have faced the similar situation while trying to install ROS kinetic on embedded development boards. There were three |
2019-05-28 01:20:47 -0500 | marked best answer | OcTree is Null after dynamic_cast from AbstractOcTree Hi!
I am trying to read an The program is compiled normally without any warning. But when I run it I get the following result. As I checked with the condition: What am I doing wrong here? How can I Thanks in advance. |
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2019-05-27 04:00:28 -0500 | commented answer | OcTree is Null after dynamic_cast from AbstractOcTree @Namal Senarathne, delete octree; gave me the same result. I declared the AbstractOctree, and Octree as global variab |
2019-05-27 04:00:02 -0500 | commented answer | OcTree is Null after dynamic_cast from AbstractOcTree @Namal Senarathne, delete octree; gave me the same result. I declared the AbstractOctree, and Octree as global variab |
2019-05-27 03:59:47 -0500 | commented answer | OcTree is Null after dynamic_cast from AbstractOcTree @Namal Senarathne, delete octree; gave me the same result. I declared the AbstractOctree, and Octree as global variab |
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2019-05-25 02:53:55 -0500 | edited question | OcTree is Null after dynamic_cast from AbstractOcTree OcTree is Null after dynamic_cast from AbstractOcTree Hi! I am trying to read an Octomap published by /octomap_full as |
2019-05-25 02:53:45 -0500 | edited question | OcTree is Null after dynamic_cast from AbstractOcTree OcTree is empty after dynamic_cast from AbstractOcTree Hi! I am trying to read an Octomap published by /octomap_full as |
2019-05-25 02:53:03 -0500 | asked a question | OcTree is Null after dynamic_cast from AbstractOcTree OcTree is empty after dynamic_cast from AbstractOcTree Hi! I am trying to read an Octomap published by /octomap_full as |
2019-04-08 01:31:01 -0500 | commented answer | How to detect objects using kinect sensor? I have not directly used PCL. Since it's a very popular library, there should be a lot of tutorials, and examples availa |
2019-04-08 00:01:29 -0500 | commented answer | How to detect objects using kinect sensor? No. Those techniques are originally mapping techniques. They are popularly used in navigation stack to identify obstacle |
2019-04-07 23:57:18 -0500 | commented answer | How to detect objects using kinect sensor? No. Those techniques are originally mapping techniques. They are popularly used in navigation stack to identify obstacle |
2019-04-07 23:56:19 -0500 | commented answer | How to detect objects using kinect sensor? No. Those techniques are originally mapping techniques. They are commonly used in navigation stack to identify obstacles |
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2019-04-07 23:07:13 -0500 | edited answer | How to detect objects using kinect sensor? You can use the aid of a map to identify obstacles. since you have a 3D sensor, I can recommend octomap. Octomap is a 3D |
2019-04-07 23:05:47 -0500 | answered a question | How to detect objects using kinect sensor? You can use the aid of a map to identify obstacles. since you have a 3D sensor, I can recommend octomap. Octomap is a 3D |
2019-04-07 22:38:01 -0500 | commented question | turtlesim node doesn't work As I understand, you get the final error message because you have removed the turtlesim package from your workspace. If |
2019-04-07 22:37:08 -0500 | commented question | turtlesim node doesn't work As I understand, you get the final error message because you have removed the turtlesim package from your workspace. If |
2019-04-07 00:23:14 -0500 | edited answer | freenect /camera/depth/points topic not published under a group namespace tag. I figured out that qbot1/camera/depth/points topic is successfully published through freenect.launch launcher, but the o |
2019-04-07 00:21:59 -0500 | edited answer | freenect /camera/depth/points topic not published under a group namespace tag. I figured out that qbot1/camera/depth/points topic is successfully published through freenect.launch launcher, but the o |
2019-04-06 19:02:13 -0500 | marked best answer | freenect /camera/depth/points topic not published under a group namespace tag. Hi! I am currently running Octomap on my Qbot using ROS kinetic and Ubuntu 16.04. (My plan is to run ROS navigation stack using the built octomap and create a multi-robot system) Because of the multi-robot networking requirement I need to name my robots uniquely, and I tried doing this using both <include> and <group> tags. While my launch file works as expected without the namespace parameter, it does not give the expected result with the namespace. I generated rqt_graphs for my working and not working programs and figured out that /camera/depth/points topic is not published so that it can output into the octomap_server node. This is my first launch file which works accurately. And here is the relevant rqt_graph (generated without running RViz) This is my second launch file which I wrote by including the group tag and a namespace And this is the relevant rqt_graph It looks like the /camera/depth/points topic is not available in the second setting, and hence it cannot publish to octomap_server. But it is available when I launch the file without <group> tag. Does anybody know what I am doing wrong here? Note: I use the standard ROS packages for Octomap, kobuki_node, and freenect drivers. I have located all of them within my working directory and sourced them. I have tried adding namespace variable as different include tags also. |
2019-04-05 06:18:06 -0500 | commented answer | Adding a namespace to robot frames @janindu, @Reamees, Thank you both for the tips. I should try those things in the future. |
2019-04-05 06:14:23 -0500 | marked best answer | Adding a namespace to robot frames I am running multiple qbots in a multi-master network, and I have been able to successfully run individual robot topics under a given namespace. (eg: qbot1/mobile_base/commands/ .... , qbot2/mobile_base/commands/... etc). But my robots still run under the default frame names defined by the system, so every robot has the same frame names. For example, this is my TF tree for qbot0: My expectation is to remap these frames as, So that, when I run two robots in the system, I can visualize two separate trees. (one tree per robot) I use the following launch file with the standard kobuki, and freenect drivers. I get the following results when I run tf_monitor command. I have no luck with the tf_prefix parameter. I wish to know a few thing if you are familiar with libraries like freenect and tf.
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2019-04-04 23:56:36 -0500 | commented answer | Adding a namespace to robot frames The reason for this issue was; apart from installing the packages from the source, I had also installed them using comma |
2019-04-03 01:20:21 -0500 | commented answer | Adding a namespace to robot frames Yes. I think my program is loading data via the sources in the /opt/ros/kinetic/share directory. They have all the old a |
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2019-04-03 01:19:17 -0500 | commented answer | Adding a namespace to robot frames Yes. I think my program is loading data via the sources in the /opt/ros/kinetic/share directory. I have all the required |