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2015-04-29 15:11:53 -0500 | commented answer | Calling a ros service function from another one It's as simple as tbh makes it out to be - just call that function name from inside the other service. No need to specify an address for the srv.request or srv.response, they are already included. So it looks like this: serviceCallBack(some_srv.request, some_srv.response) |
2015-04-23 18:57:02 -0500 | commented answer | How can I control the rqt_plot x-axis scale? It's right-click and drag on 14.04 and Indigo. |
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2015-04-18 17:55:37 -0500 | commented question | RVIZ crashes and Qt has caught an exception thrown from an event handler Did you ever figure this out? |
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2015-04-03 23:56:36 -0500 | commented answer | ROS remote master: can see topics but no data This worked for me. Just add the publishing computer to the /etc/hosts file in the same format as the localhost is added. |
2015-04-02 23:08:50 -0500 | commented question | urg_node single echo scan error Fixed it. Downloaded "upgrade" and "reset" attachments from this website (directions on website): http://wiki.ros.org/hokuyo_node/Troub... Ran the programs. Then I cycled the power on the laser and everything seemed to work fine. |
2015-04-02 23:06:51 -0500 | commented answer | No transform from [base_link] to [/map] Nice. Thank you. |
2015-04-02 22:41:06 -0500 | commented question | urg_node single echo scan error Having the same problem - using the urg node to run the 04LX Classic and I'm not getting any data. |
2015-01-27 10:02:43 -0500 | commented answer | Trouble Including rosbag This was very helpful. I was missing the CMakeLists.txt part. Thanks! |
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2014-11-23 23:16:58 -0500 | commented answer | Can a node be a subscriber and client at the same time? Ha! Unfortunately I don't have enough points yet. |
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2014-11-20 11:00:48 -0500 | commented question | Can a node be a subscriber and client at the same time? I'll have to check out the nodelet solution. My answer will go through a couple more revisions, but I wanted to put up our immediate solution so that others can see a way of doing it. Thanks. |
2014-11-20 10:56:25 -0500 | commented answer | Can a node be a subscriber and client at the same time? Sorry for the ambiguity, hopefully the answer clears things up. |
2014-11-20 10:55:51 -0500 | answered a question | Can a node be a subscriber and client at the same time? Yes. A node can be a subscriber and a client at the same time. We needed a node that could subscribe to a topic and call a service request from another node at any given time. I couldn't find any solutions (probably because it is a relatively simple concept)... but I think there should be some documentation for other people stuck with the same problem. The problem we were having: Most of the service request examples have the service request being called from inside the main function. When we tried to do this, we were only able to request a service once and then the node would be caught in a spin loop. To avoid this error, we decided to move the service request into the subscriber callback function. This way it would be called whenever the subscriber heard a message. The basic idea: The client is instantiated in the main function, but it needs to be used in the callback function. I made a ros::ServiceClient pointer at a global level (w.r.t. the node) and then gave it the address of the client. In the callback function I dereference the client pointer and use it to request a service. |
2014-11-20 09:31:49 -0500 | asked a question | Can a node be a subscriber and client at the same time? I figured out how to do this, but couldn't find any documentation anywhere so I figured I'd help out anyone that is trying to do the same thing. |