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2018-07-16 08:46:48 -0600 commented answer ROS melodic does it support Turtlebot2 ?

Update, got depthimage_to_laserscan to build checking out mikaelarguedas-patch-1 branch. Still, keyboard_teleop does not

2018-07-16 08:21:11 -0600 commented answer ROS melodic does it support Turtlebot2 ?

Running $ roslaunch turtlebot_gazebo turtlebot_world.launch almost works but getting [ERROR] [1531744943.775336027,

2018-07-16 08:14:51 -0600 commented answer ROS melodic does it support Turtlebot2 ?

For the build this worked $ cd ws-melodic $ wstool init src

2018-07-16 08:12:13 -0600 commented answer ROS melodic does it support Turtlebot2 ?

Thanks for this question, would also like to run full TurtleBot2 stack in melodic on Ubuntu 18.04. Managed to actually b

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2014-02-03 05:43:04 -0600 answered a question How to extract data from *.bag?

just for the fun of it, here is a bag2csv one-liner for bash

for topic in `rostopic list -b bagfile.bag` ; do rostopic echo -p -b bagfile.bag $topic >bagfile-${topic//\//_}.csv ; done
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2013-01-10 10:35:04 -0600 asked a question debian source install groovy

q: how about installing groovy from source on debian

a: following ubuntu based source install on

** install ros/groovy on debian


  1. install rosdep via pip ros/wiki/rosdep
  2. install wstool via pip ros/wiki/wstool
  3. add python-qwt5-qt4, pydot for debian to python.yaml:
  4. checkinstall collada-dom from 2.4 tarball as collada-dom-dev
  5. add debian collada-dom to base.yaml
  6. rosdep satisfied

running catkin_make_isolated

  1. opencv2 is always remade
  2. /home/x75/ros_catkin_ws/install_isolated/lib/ is missing in polled_camera $ vim CMakeFiles/polled_camera.dir/link.txt
  3. pcl segfaults with parallel make (e.g. -j2), do standalone make in build dir, then rerun catkin

rosmake -a

  • builds 101 of 103 packages, then bails out at simple_navigation_goals_tutorial
  • at which point i could run my stuff, regardless
2012-11-27 21:46:27 -0600 commented question Problems with rqt / groovy / ubuntu

thx a lot, rqt/Plot now works with pyqtgraph. couple of issues: been using pyqt implicitly but discovered -b switch. pyside doesn't work at all. pyqtgraph needed downgrade to r223 (legend issues). had to tweak src/rqt_plot/ so that plot_types[0] gets selected. missing instance setting dialog?

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2012-11-27 02:59:53 -0600 commented question Problems with rqt / groovy / ubuntu

Applying the solution below works fine overall. Instantiating the "Plot" plug-in with pyqtgraph leads to segfault, Matplotlib mode works, with intermittent segfaults. Needs further investigation.

2012-11-26 21:02:39 -0600 commented answer Problems with rqt / groovy / ubuntu

that worked nice. thanks a lot.

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2012-11-26 04:35:45 -0600 asked a question Problems with rqt / groovy / ubuntu


trying to run rqt on ubuntu 12.04 with ros/groovy

i did an apt install of ros-groovy-desktop and ros-groovy-rqt.

trying to start (as suggested on rqt/Userguide) via

$ rosrun rqt_gui rqt_gui

leads to:

x75@rudi:~/ros_workspace$ rosrun rqt_gui rqt_gui
Traceback (most recent call last):
  File "/opt/ros/groovy/stacks/rqt/rqt_gui/bin/rqt_gui", line 15, in <module>
    from rqt_gui.main import Main
  File "/opt/ros/groovy/stacks/rqt/rqt_gui/src/rqt_gui/", line 39, in <module>
  File "/opt/ros/groovy/lib/python2.7/dist-packages/roslib/", line 62, in load_manifest
    sys.path = _generate_python_path(package_name, _rospack) + sys.path
  File "/opt/ros/groovy/lib/python2.7/dist-packages/roslib/", line 98, in _generate_python_path
    packages = get_depends(pkg, rospack) 
  File "/opt/ros/groovy/lib/python2.7/dist-packages/roslib/", line 51, in get_depends
    vals = rospack.get_depends(package, implicit=True)
  File "/usr/lib/pymodules/python2.7/rospkg/", line 186, in get_depends
    s.update(self.get_depends(p, implicit))
  File "/usr/lib/pymodules/python2.7/rospkg/", line 180, in get_depends
    names = [ for p in self.get_manifest(name).depends]
  File "/usr/lib/pymodules/python2.7/rospkg/", line 118, in get_manifest
    return self._load_manifest(name)
  File "/usr/lib/pymodules/python2.7/rospkg/", line 157, in _load_manifest
    retval = self._manifests[name] = parse_manifest_file(self.get_path(name), self._manifest_name)
  File "/usr/lib/pymodules/python2.7/rospkg/", line 149, in get_path
    raise ResourceNotFound(name, ros_paths=self._ros_paths)
rospkg.common.ResourceNotFound: qt_gui
ROS path [0]=/opt/ros/groovy/share/ros
ROS path [1]=/opt/ros/groovy/share
ROS path [2]=/opt/ros/groovy/stacks

rospack reports fine:

x75@rudi:~/ros_workspace$ rospack find qt_gui

not sure what i'm doing wrong.

cheers, opt