randaz's profile - activity

Using ROS on WSL on a similar setup, but still there's something weird. I have: * Windows 10 Build 16299.19 (as yours)

Hi, since the discussion is now few months old, I was wondering if there are any updates on this topic, especially about

Hi, it's not clear to me what is the default ROS behavior if I a have node which publishes and subscribes to the same topic. Are the published messages automatically received by the subscriber?

If the answer is yes, how I can prevent my node to re-read the messages that the node itself is publishing?

If the answer is no, how can I allow my node to read the messages that the node itself is publishing?

Thank you!

Hi, I set param auto_exposure=false in the openni2.launch file (e.g. https://github.com/ros-drivers/openni... ) Now, how can I control the exposure of the rgb camera of my asus xtion device? Thank you

Hi, I read the tutorial about creating a new map with hector_slam and save it. My question now is: how to load a saved map and use it for localization? (thus substituting amcl) Thanks

Hi, I'm new to ROS. I'm following the tutorial:

http://www.ros.org/wiki/pr2_simulator/Tutorials/StartingPR2Simulation

when I do:

rosmake pr2_gazebo

I get the following error:

rosmake ] Packages requested are: ['pr2_gazebo']
[ rosmake ] Logging to directory/home/randaz/.ros/rosmake/rosmake_output-20111110-144213 [ rosmake ] Expanded args ['pr2_gazebo'] to: []
[ rosmake ] WARNING: The following args could not be parsed as stacks or packages: ['pr2_gazebo'] [ rosmake ] ERROR: No arguments could be parsed into valid package or stack names.

I also cannot do:

roslaunch pr2_gazebo pr2.launch [pr2_gazebo] is not a package or launch file name

I don't know if something is missing in my installation. I installed:

sudo apt-get install ros-electric-desktop-full

and

sudo apt-get install ros-electric-wg-pr2-apps

Do I need something else? I'm using Ubuntu 11.10 Oneiric

Thank you

Hi, I am using Ubuntu 11.10 (Oneiric). I followed the tutorial on: http://www.ros.org/wiki/Robots/PR2/electric

but when I try to do: sudo apt-get install ros-electric-pr2-desktop sudo apt-get install ros-electric-wg-pr2-desktop

I can't find those packages. Do you have any suggestion?

So, in the meanwhile, I installed: sudo apt-get install ros-electric-wg-pr2-apps which it works for me. Is it the same thing?

Thank you

Hi, When I use laser_scan_matcher everything works well for about 5-10 minutes, then the module crashes with the following output:

[laser_scan_matcher_node-1] process has died [pid 6944, exit code -11, cmd /opt/ros/fuerte/stacks/scan_tools/laser_scan_matcher/bin/laser_scan_matcher_node scan:=/my_robot_bridge/laser_out odom:=/my_robot_bridge/odometry_out __name:=laser_scan_matcher_node __log:=/home/user/.ros/log/57fa5eac-28cd-11e2-b8c6-00221522c9d6/laser_scan_matcher_node-1.log].
log file: /home/user/.ros/log/57fa5eac-28cd-11e2-b8c6-00221522c9d6/laser_scan_matcher_node-1*.log

I searched for the log file in the suggested path, but I was not able to find it. Do you have any other suggestion to understand what's going on?

Additional info: I don't know if it is related, but when I start the laser_scan_matcher I get the following warnings (but the module works correctly)

core service [/rosout] found
Exception AttributeError: AttributeError("'_DummyThread' object has no attribute '_Thread__block'",) in <module 'threading' from '/usr/lib/python2.7/threading.pyc'> ignored
process[laser_scan_matcher_node-1]: started with pid [6944]
[ INFO] [1352310705.912643992]: Starting LaserScanMatcher
Exception AttributeError: AttributeError("'_DummyThread' object has no attribute '_Thread__block'",) in <module 'threading' from '/usr/lib/python2.7/threading.pyc'> ignored

Additional info about my system: I am using Ubuntu 12.04 with ROS distro fuerte. For the installation of laser_scan_matcher I followed the instructions reported here: http://www.ros.org/wiki/scan_tools?distro=fuerte. Currently I'm using the following parameters:

<node pkg="laser_scan_matcher" type="laser_scan_matcher_node" 
name="laser_scan_matcher_node" output="screen" args="scan:=/my_robot_bridge/laser_out">
<param name="fixed_frame" value = "odom"/>
<param name="base_frame" value="base_link"/>
<param name="use_alpha_beta" value="true"/>
<param name="publish_tf" value="true"/>
<param name="max_iterations" value="10"/>
<param name="use_imu" value="false"/>
<param name="use_odom" value="false"/>
</node>

Any updates from the developers about this issue? Should I submit a ticket on github? Thank you