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If it may helps [here](If it may helps here there is a simple C++ library based on PCL 1.8 and here the ROS pkg that use

I managed to make it work with both 1.7 and 1.8 libraries installed. However I guess that you can simply installed that

I'm experimenting the same issue and the absolute path does not solve it. There is the same problem in this unsolved que

Hi,

I did not run the code but I am pretty sure that it is because you set uncorrectly the scales of the arrow. For the tutorial you mean, they used a CUBE as shape, so what they want 1 meter for all the dimensions. But for the arrow the dimensions have a different meaning. See this in the section Objects Types they explain the meaning of the scale for the arrow. Moreover the dimensions definition depends on the way you used to specify the arrow Pose (Points or Quaternion).

In your case, you used quaternion, so:

scale.x is the shaft diameter

scale.y is the head diameter

scale.z is the head length

You set all those values equal to 1, so that is the reason to be of the cylinder.

Hope this help.

The "arg" stuff is like creating a variable. When you launch the file you can pass the name of the folder as parameter (roslaunch name_package launnch_file FOLDER:=new_folder) otherwise it will use the one specified in the default tag. See here for more opts

<arg name="FOLDER" default="/home/nicola/test/"/> <node pkg="rosbag" type="record" name="recorder" output="screen" args="-a -o $(arg FOLDER)"/>

You can launch it from whatever folder you are in, just type:

roslaunch <name_package> file.launch

If you use roslaunch file.launch you have to be in the launch folder of the package.

I am not completely understing your question, is this what you mean?

Otherwise create a new workspace and try compiling there your package, I am pretty sure it is not problem of the CMakeLists.txt file. More than this I cannot help, sorry.

Did you remove everything in the "build" folder of the workspace and then recompiled all the packages you have? That is what I did, I m sorry but I have just a very basic knowledge of cmake and I actually do not know why deleting the cache and recompiling everything works, but it works.

To launch all together you have simply to include all the launch files into a single launch file. (Take a look to this ).

Regarding the rosbag check this answer, the xml syntax for rosbag record -ais: <node pkg="rosbag" type="record" name="recorder" output="screen" args="-a"/> (in "args" you can put all the arguments for that command)

So the whole launch file to launch all you need is:

<launch>

   <include file="$(find turtlebot_gazebo)/launch/turtlebot_world.launch"/>
   <include file="$(find turtlebot_gazebo)/launch/gmapping_demo.launch"/>
   <include file="$(find turtlebot_rviz_launchers)/launch/view_robot.launch"/>
   <include file="$(find turtlebot_teleop)/launch/keyboard_t.launch"/>

   <!-- 
     The rosbag will be saved in the ~./ros folder
   -->
   <node pkg="rosbag" type="record" name="recorder" output="screen" args="-a"/>    
</launch>

Now you can launch it from the terminal as a normal launch file.

I just resolved it by removing the Cmake Cache, then it compiled correctly.

Although I still don't understand why it was not working fine the first time.

I am sorry, I am just working in simulation right now and moreover with a different kind of robots, but the problem was the same. I guess it should work also with the real ones.

I don't know if you have already tried to do that, but I had a similar problem and I've just added a fixed transform in the launch file between the world frames of the two robots.

<node pkg="tf" type="static_transform_publisher" name="world_frames_connection" args="0 0 0 0 0 0 /turtlebot1/world /turtlebot2/world 100"/>

Then I obtained a single tree with two branches, one per robot.

Hope this helps

I had the same error, but doing how you said:

cloudCluster.header = filtered_cloud.header

It was working correctly for me.

Thanks, that resolved the problem :)

Moreover, If I only change in the CMakeLists.txt the Eigen with Eigen3 is working without any further changes.

Hi all,

I am not able to locate the package handle_detector in the repositories for ros indigo, although in the Ros Wiki say that it sould there be for indigo.

Morevoer, If I try to compile it from the source I get this error:

CMake Error at handle_detector/CMakeLists.txt:21 (find_package):
  By not providing "FindEigen.cmake" in CMAKE_MODULE_PATH this project has
  asked CMake to find a package configuration file provided by "Eigen", but
  CMake did not find one.

  Could not find a package configuration file provided by "Eigen" with any of
  the following names:

    EigenConfig.cmake
    eigen-config.cmake

  Add the installation prefix of "Eigen" to CMAKE_PREFIX_PATH or set
  "Eigen_DIR" to a directory containing one of the above files.  If "Eigen"
  provides a separate development package or SDK, be sure it has been
  installed.

I don't have high knowledge of c++ and ros. I understand that it doesn't find the package Eigen, but I have installed all the ros packages of Eigen:

sudo apt-get install ros-indigo-eigen-*

And moreover I also have the Eigen library installied in my pc.

I Have no idea how to fix the problem. I just want to use that package and whatever method (by repository or by source) is ok for me.

Thanks in advance!