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2013-09-05 03:00:51 -0600 commented answer How to start and stop Gazebo 1.9?

The killgazebo command is wonderful. Thanks!

2013-09-04 09:10:34 -0600 commented answer xacro dependency problem while installing gazebo_ros_pkgs on ROS Groovy

I first removed the references to xacro to build anyway, today I removed the package and downloaded it again using your solution and it worked. Thanks!

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2013-09-04 08:56:27 -0600 asked a question Collada version problem when spawning model

I'm trying to spawn the youbot model by WPI-RAIL in Gazebo 1.9 using ROS Groovy on Ubuntu 12.04.

After compiling the xacro files using

rosrun xacro xacro.py youbot.urdf.xacro > youbot.urdf

I try to spawn the model using

rosrun gazebo_ros spawn_model -file `rospack find youbot_description`/robots/youbot.urdf -urdf -x 0 -y 0 -z 1 -model youbot-test

and even though the model is actually shown inside Gazebo, I get a few of these errors in the terminal where gazebo is in execution

Error [ColladaLoader.cc:77] Invalid collada file. Must be version 1.4.0 or 1.4.1

Looking at the meshes in the project, I found out that some of the meshes for the arm are actually version 1.5.

Is this compromising the full spawn of the robot simulation? Is there a way to allow both 1.4 and 1.5 Collada files in the same project?

2013-09-04 08:37:46 -0600 commented answer xacro dependency problem while installing gazebo_ros_pkgs on ROS Groovy

Thank you for the suggestions! I think the solution by @hsu might actually be a bit cleaner, though!

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2013-09-02 10:51:20 -0600 asked a question xacro dependency problem while installing gazebo_ros_pkgs on ROS Groovy

I'm running ROS Groovy on Ubuntu 12.04, and I'm trying to install Gazebo 1.9 from sources, as explained in the online tutorial on the official wiki.

I can clone the repos (including ros_controllers) and update rosdep without problems, but when I get to

rosdep check --from-paths . --ignore-src --rosdistro hydro

I get the following error

ERROR[joint_trajectory_controller]: Cannot locate rosdep definition for [xacro]
    rosdep key : xacro
    OS name    : ubuntu
    OS version : precise
    Data: <no data>

Looking around for solutions, I found out here that the problem is probably that xacro is a dry (rosbuild) package and so it cannot be referenced from a catkin package.

If I ignore the error and go on, after a catkin_make I get

Set xacro_DIR to the directory containing a CMake configuration file for xacro. 
The file will have one of the following names:

xacroConfig.cmake
xacro-config.cmake

Can you suggest any way of dealing with this problem?