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2021-05-04 04:21:47 -0500 | received badge | ● Popular Question (source) |
2021-05-02 04:23:52 -0500 | asked a question | Multiple initialpose candidates for amcl Multiple initialpose candidates for amcl Is it possible to initialize AMCL's filter with multiple poses? Using another |
2020-04-28 05:29:33 -0500 | answered a question | simpleactionclient send_goal_and_wait problem (I know this is an old one, but for future reference here is my answer.) The OP was aiming to use send_goal_and_wait |
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2018-02-24 08:50:30 -0500 | answered a question | How to define goal in RVIZ through python script You can send navigation goals as follows: from geometry_msgs.msg import Pose, Point, Quaternion goal = MoveBaseGoal() |
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2015-10-25 09:06:23 -0500 | marked best answer | rviz segfault in fuerte Hello everyone, I just started using ROS and had a problem with rviz. I tried different OGRE modes: Neither of them worked. I finally get into the bin directory of rviz and debug the exectuable. Here is the result (for the entire output, please see here): And for those who are willing to help me - they say in a bug report (here) that there is a script called system_info.sh - I attach the system info here. Thanks in advance. |
2015-09-12 18:41:04 -0500 | answered a question | I am new to ROS. Could someone tell me how to install the frontier exploration package ? You need the executable of the package assuming that you have Indigo and Ubuntu. 2) You can clone the repository and get the source codes. To generate the executable, you need to compile the source codes, as usual. You should place that package in your workspace and run |
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2015-08-02 22:53:03 -0500 | commented question | robot understand human language Isn't that speech recognition:) ? Or you wanted to learn about natural language processing? |
2015-07-27 07:45:44 -0500 | commented question | How to add a new directory to ROS_PACKAGE_PATH? Did you append this command to your |
2015-07-24 02:21:45 -0500 | edited question | Cannot load message class for []. Are your messages built? I have a node that subscribes to /joy topic, converts to /cmd_vel topic, and publishes to arduino via rosserial. I am receiving joy messages just fine, but when I (control is the name of the node, Velocity is the message), it says: When I rostopic echo /cmd_vel, I get I have tried many things. I believe that my environment variables are good, and I tried going into the root of my workspace, catkin_make clean, catkin_make, and source my devel/setup.sh file. Still, nothing seems to be working. My Any advice would be helpful. Thanks! Edit 1: CMakeLists.txt: |
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2015-07-18 18:13:35 -0500 | commented question | i have problem with face_recognition. "/home/rouzbeh/rostest/fc/face_recognition" This shouldn't be in your ROS_PACKAGE_PATH. You have problems with your workspace settings probably. Change ROS_PACKAGE_PATH to point to the src folder in your workspace and after compilation, give it another try. |
2015-07-18 18:05:06 -0500 | commented question | ERROR: Cannot load message class for [stereo_msgs/RectifiedImage]. Are your messages built? Are they? What is the output of |
2015-07-17 19:57:36 -0500 | commented question | Where do I place packages inside my catkin_ws folder? You should place your packages under |
2015-07-10 06:12:01 -0500 | commented answer | SLAM, How do we know when a robot has completed its mapping process Sure. I just recommend you to take a look at the exploration packages in ROS, there are a few of them. You can understand their approach by doing so. Here is an example: explorer |
2015-07-10 05:32:33 -0500 | commented answer | SLAM, How do we know when a robot has completed its mapping process To finish the mapping process is your choice. You just specify a termination criteria. You will need a metric to do that. You can subscribe to the /map topic and use the ratio |
2015-07-09 03:20:23 -0500 | commented answer | SLAM, How do we know when a robot has completed its mapping process That means you are going to implement an exploration algorithm, right? Let's say you use gmapping. Then, you need to navigate the robot to unknown areas. Comparing the performance of exploration methods does make sense. Otherwise, you are just comparing the proficiency of the human operators. |
2015-06-30 05:25:58 -0500 | commented question | problem with navigation stack Actually, I believe you might be able to solve your problems without answering most of the questions asked in the previous comment. That doesn't change the fact that you need to provide more information. Apparently, you have problems with costmap configurations. Can you share the parameters you used |
2015-06-29 15:49:31 -0500 | commented question | Running ROS across multiple machines No. No limitations. |
2015-06-29 08:11:25 -0500 | commented answer | specifying base_link frame for the Transformation tree Sure. I'm glad I could help. |
2015-06-29 07:23:46 -0500 | commented question | specifying base_link frame for the Transformation tree So, 16 cm of difference in Z-direction is caused by that tf. |
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2015-06-29 05:07:28 -0500 | answered a question | Best way for line tracing? I think 2D ray tracing is what you are looking for. I have recently dealt with this problem myself and followed the algorithm described here You need to implement your own |
2015-06-27 19:40:50 -0500 | commented question | specifying base_link frame for the Transformation tree There might be a problem with map->odom_combined tf. What is the output of |
2015-06-19 08:39:04 -0500 | answered a question | Queueing positions for the robot to move to You can listen Moreover, if you want to try a systematic approach you can use smach to create a state machine with states and transitions etc. |
2015-06-14 11:49:17 -0500 | answered a question | GMapping OccupancyGrid Coordinates Here is the error: I believe or depending on your orientation. By the way, you can get |
2015-06-02 11:43:05 -0500 | commented answer | CMake Error for depending two custom packages Yes, @Dirk you are right. I missed some parts as I was reading the question. I will delete the answer right away. |
2015-06-02 08:36:14 -0500 | answered a question | CMake Error for depending two custom packages Merhaba @emreay :) Are you able to see the output of If you encounter an error then I believe you have a problem here, in your CMakeLists.txt of agv_msgs: Here, it is stated that you need to export the message runtime dependency. So I would change these lines as follows: |
2015-05-03 19:16:48 -0500 | commented question | ROS Android applications are not working UPDATE: I am 99% sure that the problem is persistent on Samsung devices. I have been trying the |
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2015-05-02 09:18:58 -0500 | commented question | ROS Android applications are not working I just tried it with two different devices. Only on Samsung devices, I ran into this problem. On others, it works as expected. |