blueberry's profile - activity

I have a callback function defined as on_string_msg(const std_msgs::String::ConstPtr& msg). I have both std_msgs::String and a self-defined msg which wraps a std_msgs::String field. myMsg.msg { std_msgs/String subField; }

How can I get std_msgs::String::ConstPtr for subField in the myMsg callback function on_myMsg(const myMsg::ConstPtr& msg) so that I can reuse the function on_string_msg(const std_msgs::String::ConstPtr& msg) with the subField?

Basically, I would like to do

on_myMsg(const myMsg::ConstPtr& msg) {

on_string_msg(msg->subFieldConstPtr); // How to achieve this?

}

Hi, I have two catkin packages, one generating a library and the other makes use of it. In the cmake file of the dependent project, I have "link_directories( ${CATKIN_DEVEL_PREFIX}/lib/ )". This works fine with catkin_make, as the libxxx.so gets generated in devel/lib/. However when using catkin_make_isolated, the libxxx.so gets generated in devel_isolated/project_xxx/lib/ instead. And ${CATKIN_DEVEL_PREFIX} does not seem to dynamically substitute with the correct path according to the catkin command used. What cmake or catkin variable should I use for the link_directories to work in both cases?

here is my config <node name="rviz2" pkg="rviz" type="rviz" args="-d $(find scene_plugin)/launch/test2.rviz" required="true"/> <node name="rviz3" pkg="rviz" type="rviz" args="-d $(find scene_plugin)/launch/test3.rviz" required="true"/> Do you have any idea why this would happen?

Thanks @jarvisschultz, I was able to launch independent Rviz instances by setting different ROS_MASTER_URI and GAZEBO_MASTER_URI in separate terminals. However, when I tried to launch them from one single launch file, one Rviz starts properly, while the other exits on exception.

Hi,

Is it possible to launch multiple independent Rviz instances on the same machine?