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2011-12-03 23:38:11 -0600 commented answer Linking CXX shared library
When i ran the rosmake command, i get : [rosmake ] Results: [ rosmake ] Built 23 packages with 0 failures. but right after that if i run the make command, i get the same error as i mentioned above....
2011-12-03 11:46:55 -0600 commented question Linking CXX shared library
I also run the rosmake command, and i see no failures in that list....
2011-12-03 11:46:08 -0600 commented question Linking CXX shared library
well, i am installing a package called "common" from the ros.org for my project related to gazebo simulator. There is this sub folder called actionlib inside the main package. I tried to run the make command in "/home/maneesh/ros_stacks/common/actionlib/" directory and the above error showed up....
2011-12-03 10:48:18 -0600 asked a question Linking CXX shared library

Hi, i have installed few packages and trying to build them using the "make" command and i am getting a linking error.... the code:

"Linking CXX shared library ../lib/libactionlib.so /usr/bin/ld: cannot find -lros collect2: ld returned 1 exit status make[3]: * [../lib/libactionlib.so] Error 1 make[3]: Leaving directory /home/maneesh/ros_stacks/common/actionlib/build' make[2]: *** [CMakeFiles/actionlib.dir/all] Error 2 make[2]: Leaving directory/home/maneesh/ros_stacks/common/actionlib/build' make[1]: [all] Error 2 make[1]: Leaving directory `/home/maneesh/ros_stacks/common/actionlib/build' make: ** [all] Error 2"

how do i go about and eliminate the error?

regards,

maneesh

2011-11-20 16:31:56 -0600 asked a question Service call failed: transport error completing service call

Hi everyone,

Well, i am trying to launch gazebo simulator on my system along with an object of Kuka Youbot in it. The "empty_world" command seems to be working fine and the Gazebo launches successfully. the error occurs when i try to introduce a object in it, but typing the following commands:
1. roscore in one TW 2. roslaunch youbot_description youbot_arm_description.launch in another TW and 3. roslaunch youbot_description youbot_arm_publisher.launch in an other TW

The first two commands seems to be working fine, that is the process runs successfully, but as soon as i run the third command in a TW, the gazebo runs successfully for about 5 seconds and the process dies automatically closing the Gazebo simulator and throws the following error:

"Main simulation loop failed /home/youbot/ros_stacks/simulator_gazebo/gazebo/build/gazebo/server/controllers/ControllerFactory.cc:99 : Exception: Failed to load libgazebo_ros_controller_manager.so: libgazebo_ros_controller_manager.so: cannot open shared object file: No such file or directory

Service call failed: transport error completing service call: unable to receive data from sender, check sender's logs for details spawning success None [gazebo-2] process has died [pid 2498, exit code -11]. log files: /home/youbot/.ros/log/e142418c-136d-11e1-ad57-002682c60600/gazebo-2.log [youbot_gazebo_model-3] process has finished cleanly. log file: /home/youbot/.ros/log/e142418c-136d-11e1-ad57-002682c60600/youbot_gazebo_model-3.log"

I have no clue how to proceed with this, so, please help me with this issue. Thank you in advance....

regards,

Maneesh

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2011-11-03 06:10:31 -0600 marked best answer Roslaunch Traceback (most recent call last)

Sounds like you redefined $ROS_PACKAGE_PATH so it no longer includes the stacks of the ROS distribution. That could explain your import failure.

The root problem seems to be misunderstanding environment variables, so here is the corrected export command, as explained in several comments below:

export ROS_PACKAGE_PATH=/home/maneesh/ros_stacks:$ROS_PACKAGE_PATH
2011-11-03 05:31:56 -0600 commented answer Roslaunch Traceback (most recent call last)
Now, i am able to run the process.... but i seems to have a problem regarding the command, rosmake...., for example When i type" $rosmake youbot_oodl" I get an error stating: [ rosmake ] ERROR: No arguments could be parsed into valid package or stack names. So what does that mean now???
2011-11-03 05:10:36 -0600 received badge  Commentator
2011-11-03 05:10:36 -0600 commented answer Roslaunch Traceback (most recent call last)
Thank you so much for your help guys, it seems to be working fine now..... the process works....:)
2011-11-03 04:34:27 -0600 commented answer Roslaunch Traceback (most recent call last)
and the last line was : if [ ! "$ROS_MASTER_URI" ] ; then export ROS_MASTER_URI=http://localhost:11311 ; fi now please let me know what i need to modify in order to get rid of this error....:)
2011-11-03 04:32:12 -0600 commented answer Roslaunch Traceback (most recent call last)
export ROS_ROOT=/opt/ros/diamondback/ros export PATH=${ROS_ROOT}/bin:${PATH} export PYTHONPATH=${ROS_ROOT}/core/roslib/src:${PYTHONPATH} export ROS_PACKAGE_PATH=/opt/ros/diamondback/stacks export ROS_PACKAGE_PATH=/home/maneesh/ros_stacks
2011-11-03 04:31:37 -0600 commented answer Roslaunch Traceback (most recent call last)
Yes, i tried that, but still i am getting the error... let me post the contents of the setup.sh file, that might help...
2011-11-03 03:21:55 -0600 commented answer Roslaunch Traceback (most recent call last)
I dint delete any line or path from the setup.sh, just added an additional line, which is export ROS_PACKAGE_PATH=/home/youbot/ros_stacks..... however, there was another line : export ROS_PACKAGE_PATH=/opt/ros/diamondback/stacks....which still present in the setup.sh.... is this causing the problem?
2011-11-03 03:14:25 -0600 commented answer Roslaunch Traceback (most recent call last)
So how do i go about eliminating this failure / error, so that i can go ahead and launch gazebo with the ros command.... I am sorry, i am very much new to this and I have less knowledge in this field... if you can help with this, it would be grateful....
2011-11-03 01:55:28 -0600 commented question Roslaunch Traceback (most recent call last)
along with the above lines, I had few more lines of error, i read somewhere that, if you delete the .pyc file and change the name of the .py file the error goes off, and it did... was that the right solution???? Well i tried the same thing with above and it didnt work...
2011-11-03 01:42:01 -0600 commented question Roslaunch Traceback (most recent call last)
Hey thanks for responding, the output of the export PYTHONPATH=${ROS_ROOT}/core/roslib/src:${PYTHONPATH}, and yes after the ros setup, I am adding a line " $export ROS_PACKAGE_PATH=/home/youbot/ros_stacks" in the setup.sh
2011-11-02 14:39:58 -0600 received badge  Editor (source)
2011-11-02 09:34:46 -0600 asked a question Roslaunch Traceback (most recent call last)

hey,

i am getting a new type of error which i am not aware of how to resolve it.... if anyone knows how to reolve this issue please let me know... the error message i am receiving is :

youbot@youbot-laptop:~$ roslaunch
Traceback (most recent call last):
  File "/opt/ros/diamondback/ros/bin/roslaunch", line 2, in <module>
   from ros import roslaunch
  File "/opt/ros/diamondback/ros/core/roslib/src/ros/__init__.py", line 57, in __getattr__
    return __import__(name)
ImportError: No module named roslaunch

if anyone has any idea regarding this please let me know...thanks in advance....

regards,

Maneesh

2011-10-31 00:22:03 -0600 commented question Problem related to $ROSCORE
Well i am not typing the "$" symbol, I just type roscore in the command window as the symbol already exist in the window and yet the above error still occurs....
2011-10-27 18:25:30 -0600 commented question Problem related to $ROSCORE
I followed the procedure given in the link: http://www.ros.org/wiki/diamondback/Installation/Ubuntu
2011-10-27 03:12:21 -0600 asked a question Problem related to $ROSCORE

Hi,

I have problems regarding the command "$roscore".... I am very much new to Ubuntu and ROS, so i have no idea what i am suppose to do in-order to get rid of this error message i have posted below:

**SUMMARY

NODES No handlers could be found for logger "roslaunch" WARNING: IP address 127.0.1.1 for local hostname 'youbot-laptop' does not appear to match any local IP address (127.0.0.1,192.168.2.2). Your ROS nodes may fail to communicate. Please use ROS_IP to set the correct IP address to use. starting new master (master configured for auto start) Roslaunch got a 'No such file or directory' error while attempting to run: /opt/ros/diamondback/ros/bin/zenmaster --core -p 11311 __log:=/home/youbot/.ros/log/7e9ec426-007e-11e1-99f6-002682c60600/master.log Please make sure that all the executables in this command exist and have executable permission. This is often caused by a bad launch-prefix. [master] process has died**

So, if anyone can please help me in resolving this issue, it would be grateful.... I am in a hurry to show this result as my deadline is nearby......

Thank you in advance...

Regards,

Maneesh

and yes in addition, i performed these two operations:

$ export ROS_HOSTNAME=localhost $ export ROS_MASTER_URI=http://localhost:11311

and the following error message occurred:

**SUMMARY

NODES starting new master (master configured for auto start) No handlers could be found for logger "roslaunch" Roslaunch got a 'No such file or directory' error while attempting to run: /opt/ros/diamondback/ros/bin/zenmaster --core -p 11311 __log:=/home/youbot/.ros/log/81d48234-0083-11e1-8a52-002682c60600/master.log Please make sure that all the executables in this command exist and have executable permission. This is often caused by a bad launch-prefix. [master] process has died**

but after opening a new terminal window and type $roscore, i get the first error message again.... hope these information are sufficient for you to help me in resolving this issue....thank you