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2018-09-19 16:34:45 -0500 | commented answer | Generating an ikfast solution for 4 DOF arm I've never tried it on 4 DOF problems, I've only used 6 and 7 DOF solvers. As far as I know, ikfast does not work on und |
2018-09-09 18:26:07 -0500 | commented answer | Generating an ikfast solution for 4 DOF arm Just an update on this. As mentioned earlier, the reason for the high bandwidth is that I am writing the full length bui |
2018-09-09 18:25:45 -0500 | commented answer | Generating an ikfast solution for 4 DOF arm Just an update on this. As mentioned earlier, the reason for the high bandwidth is that I am writing the full length bui |
2018-08-08 01:26:22 -0500 | marked best answer | Is wait_for_service required before every service call? Hi, I don't fully understand the mechanics of rospy's wait_for_service function. Are we required to call wait for service every time we want to call the service, or only once when creating the ServiceProxy? |
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2018-07-31 05:31:06 -0500 | commented answer | Generating an ikfast solution for 4 DOF arm Thanks for checking this @mgangl I've only used this for jobs lasting up to half an hour or so, and there the files were |
2018-07-31 05:29:23 -0500 | commented answer | Generating an ikfast solution for 4 DOF arm Thanks for checking this @mgangl I will try to find a better way of passing the log without requiring the user to "downl |
2018-07-30 12:15:56 -0500 | commented answer | Generating an ikfast solution for 4 DOF arm Hi, that is quite surprising. There definitely is a loop running in the background which ensures that the console output |
2018-03-18 07:06:38 -0500 | commented answer | Generating ikfast plugin for 5 DOF robot Yes, I am aware that this is an issue and even though I am not permanently storing user provided files, there is no way |
2018-03-17 20:34:07 -0500 | answered a question | Generating ikfast plugin for 5 DOF robot I have created a tool for online generation of ikfast solvers - meaning no need to do any manual setting up. You can fin |
2018-03-17 20:33:34 -0500 | commented answer | Generating an ikfast solution for 4 DOF arm I have created a tool for online generation of ikfast solvers - meaning no need to do any manual setting up. You can fin |
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2018-02-28 20:28:41 -0500 | marked best answer | How to thread a specific computationally expensive callback Hello ROS community. I am building a specific application where I have two subscriber callbacks as written below: The callbacks are oversimplified for easier understanding, and I also assume X is some global variable (or object attribute), so that both callbacks can access it. callback1 is a sensor measurement coming in at 20 Hz. callback2 is called on user request, but let's assume it can be called at more than 1 Hz. In a single threaded mode, this will not work, since callback2 blocks callback1 and the sensor measurement is not read properly. I would like to implement this multi-threaded, but with following requirements:
My initial idea was to have a separate callback queue for callback2 and have the callback1 in the global queue in the single-threaded callback manner, like mentioned here under point 2. I would like to know how to implement this given the additional requirement that the callback2 is preemptable. Also, any other design recommendations are more than welcome! |
2017-12-07 06:42:12 -0500 | commented answer | Generating an ikfast solution for 4 DOF arm To add to this - in case you don't go with the Docker image, make sure you don't have mpmath installed. |
2017-12-07 06:42:01 -0500 | commented answer | Generating an ikfast solution for 4 DOF arm To add to this - in case you don't go with the Docker image, make sure you don't have mpmatht installed. |
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2017-11-26 16:04:30 -0500 | marked best answer | Importing a module that uses rospy from a module in Python3 Hi. I have a library that is fully written in Python3.5 and I want to interface it with a module that I wrote. The module that I wrote imports rospy, so it depends on Python2.7. When I try to do this I get the following error: Any idea how I could make this work? Thank you! |
2017-10-03 16:49:05 -0500 | commented answer | Importing a module that uses rospy from a module in Python3 Yes, after fixing the PYTHONPATH it worked without issues. But keep in mind that some functionalities might not still be |
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2017-07-31 11:31:19 -0500 | answered a question | Importing a module that uses rospy from a module in Python3 It was an error in how I sourced things and how I set up PYTHONPATH. The problem is the collision between libraries, and |
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2017-07-31 11:27:36 -0500 | answered a question | Using catkin without ROS It seems that downloading catkin and placing it in the source directory allows using catkin_tools without ROS. |
2017-07-30 14:17:34 -0500 | commented question | Using catkin without ROS Is there now a way to make catkin_tools ROS independent? |
2017-06-16 03:11:32 -0500 | asked a question | Importing a module that uses rospy from a module in Python3 Importing a module that uses rospy from a module in Python3 Hi. I have a library that is fully written in Python3.5 and |
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2017-06-08 05:25:40 -0500 | commented answer | Is wait_for_service required before every service call? What can cause the service to become unavailable? |
2017-06-08 03:34:59 -0500 | asked a question | Is wait_for_service required before every service call? Is wait_for_service required before every service call? Hi, I don't fully understand the mechanics of rospy's wait_for_s |
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2017-05-22 08:44:05 -0500 | asked a question | When to call wait_for_service and how to check if persistent connection is broken When to call wait_for_service and how to check if persistent connection is broken This is more like two questions in one |
2017-01-09 22:51:24 -0500 | asked a question | Automatically specify the port for rostest Hello ROS community. I am writing unit tests for a functionality that monitors the status of the roscore and performs certain steps in case the roscore stops working (properly). Now, one of the tests I have tests the behavior of complete roscore crash. To do that I do the following:
All of that looks something like this: Now, I would like to have control of on which port to spawn the roscore, since I don't want to use the default port. Adapting the command to do so is straightforward - simply adding a -p and a port number, but then --reuse-master does not connect to the desired port. Setting ROS_MASTER_URI with the same port before running solves the problem, but I would like to avoid setting the ROS_MASTER_URI every time I run the test and instead simply hard code the port I want to use. So I would like to know if there is a way of explicitly setting the port for --reuse-master to connect to, or setting the ROS_MASTER_URI for the test case from within the CMakeLists? |