AndreasLydakis's profile - activity

What does your TF tree look like?

Is re installed for python 2?

Once you have received a LaserScan message you can access it's individual measurement. Because you know the resolution o

No difference, RViz visualizes images in the same way as image_view

Strange Grid over SW Registered Depth Image Hello, I recently acquired a D415 camera and tried to use it with the realse

Laser Scanner Gazebo Plugin Crashes on Contact Hello, I have the attached urdf and xacro files for a small differential

Greetings,

I am trying to compile the neo_relayboard package from neobotix but it seems to be broken (a missing method). Does anyone have a working version or knows a workaround ? I am running ROS Indigo in Ubuntu 14.

Thank you, Andreas

Greetings,

I would like to ask if there is a way to create a global costmap for the navigation package from a map that doesnt comply to the 3 color standard ROS expects. This means having a map with extra information, such as elevation and terrain type. Ideally I would like to create the global costmap only once in order to calculate a single global path.

Hi,

I downloaded the tools from github and followed the instructions to install them. However the installation fails with the message

Linking CXX executable bin/global_cloud_align
  lib/librgbdtools.so: undefined reference to `boost::filesystem::detail::status(boost::filesystem::path const&, boost::system::error_code*)'
  lib/librgbdtools.so: undefined reference to `boost::filesystem::detail::create_directories(boost::filesystem::path const&, boost::system::error_code*)'
  lib/librgbdtools.so: undefined reference to `boost::filesystem::detail::create_directory(boost::filesystem::path const&, boost::system::error_code*)'

Other packages can link to boost normally, so in CMakeLists.txt I added the compile flags for filesystem and system but no luck. I have not messed with the package files in any other way. The rest of the stack's packages also seem to isntall fine.

EDIT: Forgot to mention, I am using ROS Hydro, Boost 1.52 on Ubuntu 12.04 Any suggestions ?

Greetings, I am trying to write an action client so I can send goals to move_base. I know that I can send them through messages also, but I would prefer the action client so I can monitor them. So my setup is this. Running Hydro I execute my localisation launch file with move_base included. I want my action client to send goals to move_base, however even when i follow exactly the steps described in http://wiki.ros.org/navigation/Tutori... , although it compiles fine,when I run the node it hangs during this step :

MoveBaseClient ac("move_base", true);

It just stays there forever. Could it be a threading issue or something ? For reference here is the file that compiles fine

#include <ros/ros.h>
#include <move_base_msgs/MoveBaseAction.h>
#include <actionlib/client/simple_action_client.h>

typedef actionlib::SimpleActionClient<move_base_msgs::MoveBaseAction> MoveBaseClient;

int main(int argc, char** argv){
  ros::init(argc, argv, "simple_navigation_goals");
    ROS_INFO("STEP 1");
  //tell the action client that we want to spin a thread by default
  MoveBaseClient ac("move_base", true);
    ROS_INFO("STEP 2");
  //wait for the action server to come up
  while(!ac.waitForServer(ros::Duration(5.0))){
    ROS_INFO("Waiting for the move_base action server to come up");
  }
    ROS_INFO("STEP 3");
  move_base_msgs::MoveBaseGoal goal;

  //we'll send a goal to the robot to move 1 meter forward
  goal.target_pose.header.frame_id = "base_link";
  goal.target_pose.header.stamp = ros::Time::now();

  goal.target_pose.pose.position.x = 1.0;
  goal.target_pose.pose.orientation.w = 1.0;

  ROS_INFO("Sending goal");
  ac.sendGoal(goal);

  ac.waitForResult();

  if(ac.getState() == actionlib::SimpleClientGoalState::SUCCEEDED)
    ROS_INFO("Hooray, the base moved 1 meter forward");
  else
    ROS_INFO("The base failed to move forward 1 meter for some reason");

  return 0;
}

Thank you in advance

Any idea on what is causing it ? It is running on Ubuntu 12.04 LTS, ROS Fuerte and an intel graphics card.

gbd run output :

     (gdb) run
    Starting program: /opt/ros/fuerte/stacks/openni_tracker/bin/openni_tracker 
    [Thread debugging using libthread_db enabled]
    Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
    [New Thread 0x7ffff1038700 (LWP 8120)]
    [New Thread 0x7ffff0837700 (LWP 8121)]
    [New Thread 0x7fffebfff700 (LWP 8122)]
    [New Thread 0x7fffeb7fe700 (LWP 8127)]
    [New Thread 0x7fffdf623700 (LWP 8133)]

    Program received signal SIGSEGV, Segmentation fault.
    0x00007fffe8a56e56 in Segmentation::detectionByPoint(bool, std::vector<Vector2D<int>, std::allocator<Vector2D<int> > > const*) ()
       from /usr/lib/libXnVFeatures_1_5_2.so


BT output :
#0  0x00007fffe8a56e56 in Segmentation::detectionByPoint(bool, std::vector<Vector2D<int>, std::allocator<Vector2D<int> > > const*) ()
   from /usr/lib/libXnVFeatures_1_5_2.so
#1  0x00007fffe8a61b61 in Segmentation::update(Array2D<unsigned short> const&, MotionDetectorByEdges const&, Floor const&, Farfield&, std::vector<Vector2D<int>, std::allocator<Vector2D<int> > > const*) ()
   from /usr/lib/libXnVFeatures_1_5_2.so
#2  0x00007fffe8a4769b in SceneAnalyzer::Update(std::vector<Vector2D<int>, std::allocator<Vector2D<int> > > const*, unsigned int) ()
   from /usr/lib/libXnVFeatures_1_5_2.so
#3  0x00007fffe8a0f95e in XnVSceneAnalyzer::InitFromSM() ()
   from /usr/lib/libXnVFeatures_1_5_2.so
#4  0x00007fffe8a107cb in XnVSceneAnalyzer::UpdateData() ()
   from /usr/lib/libXnVFeatures_1_5_2.so
#5  0x00007ffff6d315b7 in ?? () from /usr/lib/libOpenNI.so.0
#6  0x00007ffff6d3173e in ?? () from /usr/lib/libOpenNI.so.0
#7  0x00007ffff6d316b3 in ?? () from /usr/lib/libOpenNI.so.0
#8  0x00007ffff6d31965 in ?? () from /usr/lib/libOpenNI.so.0
#9  0x00007ffff6d31c0a in xnWaitAndUpdateAll () from /usr/lib/libOpenNI.so.0
#10 0x000000000040346b in WaitAndUpdateAll (this=<optimized out>)
    at /usr/include/ni/XnCppWrapper.h:9347
#11 main (argc=1, argv=<optimized out>)
    at /tmp/buildd/ros-fuerte-openni-tracker-0.1.3/debian/ros-fuerte-openni-tracker/opt/ros/fuerte/stacks/openni_tracker/src/openni_tracker.cpp:190

It also usually happens after I run it once succesfully. The first time it always runs OK, after that it may work once more, but the next will always segfault. After a reboot the same procedure occurs.

Greetings. I am using the following launch file to get odometry from laser_scan_matcher so I can use it with amcl:

    <launch>
    <node name="map_server" pkg="map_server" type="map_server" args="/home/skel/test.yaml" output="screen"/>
    <node pkg="hokuyo_transformer" type="laser_to_pcl" name="laser_to_pcl"/>
    <node name="hokuyo" pkg="hokuyo_node" type="hokuyo_node" required="true" output="screen" >
        <param name="frame_id" type="str" value="laser"/> 
        <param name="port" type="string" value="/dev/ttyACM0"/> 
        <param name="intensity" type="bool" value="false"/>
    </node>

  <node pkg="laser_scan_matcher" type="laser_scan_matcher_node" name="laser_scan_matcher_node" output="screen">
    <param name="fixed_frame" value = "odom"/>
    <param name="base_frame" value="base_link"/>
    <param name="use_alpha_beta" value="true"/>
    <param name="use_odom" value="false"/>
    <param name="use_imu" value="false"/>
    <param name="max_iterations" value="10"/>
  </node>
  <node pkg="tf" type="static_transform_publisher" name="base_link_to_laser" args="0.0 0.0 0.0 0.0 0.0 0.0 /base_link /laser 40" />
</launch>

But when I run the file I get the following message :

[ WARN] [1381839319.059787240]: Skipping scan [ WARN] [1381839320.066850260]: Could not get initial transform from base to laser frame, "base_link" passed to lookupTransform argument target_frame does not exist.

However the transform is happenning and is being published since rosrun tf tf_echo /base_link /laser outputs

At time 1381839581.581
- Translation: [0.000, 0.000, 0.000]
- Rotation: in Quaternion [0.000, 0.000, 0.000, 1.000]
            in RPY [0.000, -0.000, 0.000]

Any idea on what is the matter ? I am currently using ROS Hydro on Ubuntu 12.04