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2014-01-28 17:21:56 -0500 marked best answer nodes with 2 computers

Hi, I am trying to make a node on one computer(computer A) with some publishers and some services and try to read the messages and call some services with another computer(computer B).

computer A(ip is 192.168.1.100) and computer B(ip is 192.168.1.101) are connected since they can ping each other

computer A runs a roscore since it is the master.

on computer A, I set the ROS_MASTER_URI at http://localhost:11311 on computer B, I set the ROS_MASTER_URI at http://192.168.1.100:11311 and the ROS_HOSTNAME at 192.168.1.101

and yet it doesn't work, I don't even receive the topics messages,

I am sure I am doing something wrong or maybe didn't configure my network properly.

Does someone happen to know how to solve the problem?

Thank you so much for your help.

edit : Just for updates, when on the computer B I do rostopic list I receive the list of topics that is running on the computer A, so the configuration is good.

However, I didn't try for the services, but on the computer B I can't receive the image coming from a kinect that is on the computer A.

Did anyone have this problem before?

2013-05-30 18:23:15 -0500 marked best answer ros installation on mac architecture symbol error.

Hi, That is my first time programming on mac since I just bought a brand new mac book pro. When I try to install ros by following the wiki, I get this error :

 Linking CXX executable ../bin/rosplay
 Undefined symbols for architecture x86_64:
    "boost::filesystem3::path::wchar_t_codecvt_facet()", referenced from:
        ros::record::Player::open(std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, ros::Time, bool)in rosplay.o
    "boost::filesystem3::path::extension() const", referenced from:
        ros::record::Player::open(std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, ros::Time, bool)in rosplay.o
  ld: symbol(s) not found for architecture x86_64
  collect2: ld returned 1 exit status
  make[3]: *** [../bin/rosplay] Error 1
  make[2]: *** [CMakeFiles/rosplay.dir/all] Error 2
  make[1]: *** [all] Error 2

The architecture isn't x86 on a mac...so I don't really understand this error, does someone happen to know why?

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2013-05-13 09:43:38 -0500 commented question rosjava_core installation fails

Did you solve your issue? I am stuck on the same step of the installation.

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2012-05-05 04:49:57 -0500 commented question gazebo_ros_camera not loading in Fuerte

I also have the same error ("Exception AttributeError: AttributeError") on several of my packages. Hope this thread will solve our problem

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2012-02-22 22:49:05 -0500 answered a question Slam gmapping problems

Hi Hunter,

As Stefan said, you can look at the well made tutorial. Also if you are interested you can take a look at the launch file named gmapping.launch in the package corobot_state_tf, that is made to run gmapping on a Corobot. It may help you to understand how to launch gmapping. You should even be able to record the map in your bag file by launch this launch file.

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2012-02-13 22:47:15 -0500 asked a question OpenCV Error with openni_node.launch

Hi,

I have a Kinect device, ROS Electric, and I installed the openni package with the ubuntu package ros-electric-openni-kinect. When I execute the launch file openni_camera/openni_node.launch, I get the following error:

[ INFO] [1329197063.574824949]: [/kinect/openni_node1] Number devices connected: 1
[ INFO] [1329197063.577073075]: [/kinect/openni_node1] 1. device on bus 001:06 is a Xbox NUI Camera (2ae) from Microsoft (45e) with serial id 'B00366702454044B'
[ INFO] [1329197063.589793690]: [/kinect/openni_node1] searching for device with index = 1
[ INFO] [1329197063.715206707]: [/kinect/openni_node1] Opened 'Xbox NUI Camera' on bus 1:6 with serial number 'B00366702454044B'
[ INFO] [1329197063.822511727]: rgb_frame_id = '/openni_rgb_optical_frame' 
[ INFO] [1329197063.836168835]: depth_frame_id = '/openni_depth_optical_frame' 
OpenCV Error: Image step is wrong () in cvInitMatHeader, file /tmp/buildd/libopencv-2.3.1+svn6514+branch23/modules/core/src/array.cpp, line 162
terminate called after throwing an instance of 'cv::Exception'
  what():  /tmp/buildd/libopencv-2.3.1+svn6514+branch23/modules/core/src/array.cpp:162: error: (-13)  in function cvInitMatHeader

Do you know what would cause this error?

Please let me know if you need some more information on the issue. Thank you.

2011-12-27 08:39:37 -0500 marked best answer Download a package with rosmake

rosmake is not designed to download and build packages. It only does the building part.

I suggest that you look at using rosinstall to install your packages.

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2011-12-27 08:39:29 -0500 commented answer Download a package with rosmake
Thanks for your help, I looked into that and it is very easy to use.
2011-12-26 09:01:57 -0500 asked a question Download a package with rosmake

Hi,

I created a stack which includes one teleop package. this package uses the library Qt and depends on the stack eros to build it. In the current state, before building my package, I need to install the eros stack by following the installation instruction: http://www.ros.org/wiki/eros/Installation

I included the necessary eros_build package as a depend in my manifest.xml, but that doesn't download and install this package or even the eros stack.

My question would be, is there a way to automatize the download of the eros stack while executing rosmake in my package, if the stack wasn't found?

Thank you for your help.

2011-12-14 15:33:47 -0500 marked best answer Time needed for complete urdf model?

I can't really help as far as time... but here are some examples: http://www.ros.org/wiki/urdf/Examples

2011-12-01 11:20:28 -0500 commented answer Time needed for complete urdf model?
I think I can get the measurements without too much troubles. I would prefer to have meshes, I think the result will be better, especially for the arm and the gripper. After looking a little more at the details of the urdf package, I you made a good estimation, if I do some very simple shapes only.
2011-12-01 11:16:05 -0500 commented answer Time needed for complete urdf model?
Thank you so much for those details!
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2011-12-01 11:12:14 -0500 commented answer Time needed for complete urdf model?
Thank you! I can't believe I missed this link in the urdf main page.
2011-11-30 13:43:02 -0500 asked a question Time needed for complete urdf model?

Hi,

I would like to make a URDF model of a robot to simulate it in Gazebo. However, it seems like a lot of work to do this model from scratch. I know that there a very good tutorial exists, but is there like a database of existing URDF models from which we could start with? I know about the erratic and the PR2 robot, are thee some others?

Also, from your point of view, how much time of work is needed to make a complete model of a robot with 4 wheels, 1 arm, 1 camera, 1 Hokuyo, some bumper sensors and some infrared sensors?

Thank you so much for your precious help,

Regards, Morgan