daniel_maier's profile - activity

I also observed the same behavior. It seems to work a bit better if I use TracIK instead of KDL but I hard get close to

Hi! The compiler complains about me trying to subscribe to messages and register a parent's class protected callback method. Here is the (simplified) code:

class Base{
public:
Base () {}
protected:
void callback(const CameraInfoConstPtr & msg) { ... }
ros::Subscriber sub;
}

class Derived : public Base{
public:
Derived() {
NodeHandle nh;
sub = nh.subscribe("topic", 1,
        &Base::callback,
dynamic_cast<Base*>(this));
}
}

And this is the compiler (g++) error:

error: 'void Base::callback(const CameraInfoConstPtr&)' is protected

The problem dissolves if I make the callback public, but I do not want to do that. Can somebody explain why it does not work and show a workaround? Thank you!

I don't know if this is really something for answers.ros.org, but kforgeproject.com is down for at least 2 months now. Is the project discontinued?

Hi!

I want to migrate a bag file containing recorded with Diamondback to Electric. The bag contains roslib/Log messages which seem to be missing in Electric, plus visualization_msgs/MarkerArray for which there are no migration rules.

So I run rosbag fix xxx.bag xxx-fixed.bag and after a while I am confronted with the message:

* From: roslib/Log [acffd30cd6b6de30f120938c17c593fb]
   To:   Unknown
    1 rules missing:
     * From: roslib/Log [acffd30cd6b6de30f120938c17c593fb]
       To:   Unknown
 * From: visualization_msgs/MarkerArray [f10fe193d6fac1bf68fad5d31da421a7]
   To:   visualization_msgs/MarkerArray [90da67007c26525f655c1c269094e39f]
    1 rules missing:
     * From: visualization_msgs/Marker [bc7602ad2ba78f4cbe1c23250683bdc0]
       To:   visualization_msgs/Marker [18326976df9d29249efc939e00342cde]
Try running 'rosbag check' to create the necessary rule files or run 'rosbag fix' with the '--force' option.

So I do as it wishes and run rosbag check 2011-06-24-19-30-36.bag -g myRule.bmr which results in:

WARNING: Within rule [GENERATED.update_visualization_msgs_MarkerArray_f10fe193d6fac1bf68fad5d31da421a7] cannot migrate from subtype [Marker] to [Marker]..
The following migrations need to occur:
 * From: roslib/Log [acffd30cd6b6de30f120938c17c593fb]
   To:   Unknown
    1 rules missing:
     * From: roslib/Log [acffd30cd6b6de30f120938c17c593fb]
       To:   Unknown
 * From: visualization_msgs/MarkerArray [f10fe193d6fac1bf68fad5d31da421a7]
   To:   visualization_msgs/MarkerArray [90da67007c26525f655c1c269094e39f]
    1 rules missing:
     * From: visualization_msgs/Marker [bc7602ad2ba78f4cbe1c23250683bdc0]
       To:   visualization_msgs/Marker [18326976df9d29249efc939e00342cde]
The message type roslib/Log appears to have moved.  Please enter the type to migrate it to.
>

What am I supposed to do now? And does anyone have a migration rule for the MarkerArrays or know how to auto-generate them?

I am just following the instructions from here: http://ros.org/wiki/groovy/Installation/Source. I am not moving anything manually. Is there anything I can do to (help) debug this problem? readelf -d ./install_isolated/lib/libroslib.so shows no RPATH entry. However, neither does readelf -d /opt/ros/groovy/lib/libroslib.so (and I installed this one via apt-get) or my natively (i.e. without cross-compilation) built libroslib.so.

I am trying to compile ROS Fuerte for the Nao (atom) platform but ran into some errors. I downloaded ros-underlay, created the build folder and called cmake, but it fails with:

 CMake Warning at ros_comm/tools/rosconsole/CMakeLists.txt:28 (find_package):
  Could not find module FindLog4cxx.cmake or a configuration file for package
  Log4cxx.

  Adjust CMAKE_MODULE_PATH to find FindLog4cxx.cmake or set Log4cxx_DIR to
  the directory containing a CMake configuration file for Log4cxx.  The file
  will have one of the following names:

    Log4cxxConfig.cmake
    log4cxx-config.cmake



  CMake Error at ros_comm/tools/rosconsole/CMakeLists.txt:34 (message):
  Couldn't find log4cxx library

Apparently, it is missing a log4cxx cmake config or a FindLog4cxx.cmake file. As log4cxx is a automake project, there are no cmake config files shipped with it, so where am I supposed to get that file from? In my case, I cross-compiled log4cxx, so I cannot use the system-wide installed version. Is there an easy workaround? I tried cmake-gui and set the path to the library, but it failed to find the log4cxx-includes when building rosconsole.

just past the contents of the box in the wiki page into your terminal. It will generate a rostoolchain.cmake file

you also used a different path which lets me assume that you did not just copy&paste the instructions. there will be a tutorial for fuerte comming soon, maybe you also want to wait for that?

You can solve this by downloading the appropriate deps from http://50.28.27.175/repos/building/pool/main/r/ros-fuerte-octovis/

and install them using dpkg

can you try to follow the tutorial exactly as described in the tutorial, step-by-step and just copy&paste the shell scripts/commands into your terminal, leaving everything unchanged?

What version of ROS are you trying to compile? What command caused that error message?

Tried that, cannot create a new account for opening tickets..