Hi Hitesh, If you follow the rospy tutorials for publishing and subscribing [1] you will be able to subscribe to any type of ROS topic, including cmd_vel, and extract the fields that you want. [1] http://www.ros.org/wiki/rospy/Tutorials - Ken On Sun, Apr 18, 2010 at 11:55 AM, hitesh dhiman wrote: > Hi ken, > Well I think you're correct. If I just do a print vel, it says subscriber > object at 'address'...Basically what I'm doing is getting the cmd_vel > published from navigation stack. > On this note, is it possible to find out the correct way to get the linear > and angular velocities from cmd_vel ? > > On Apr 19, 2010 2:34 AM, "Ken Conley" wrote: > > Hi hitesh, > > It would help if you cut and paste the exact error message and include a > sample program. I suspect that the program is using the subscriber object > instead of the message object, but this is hard to tell without more > information. > > Ken > >> > On Apr 18, 2010 9:43 AM, "hitesh dhiman" >> > wrote: > > Hi all, > I'... > > ------------------------------------------------------------------------------ > Download Intel® Parallel Studio Eval > Try the new software tools for yourself. Speed compiling, find bugs > proactively, and fine-tune applications for parallel performance. > See why Intel Parallel Studio got high marks during beta. > http://p.sf.net/sfu/intel-sw-dev > _______________________________________________ > ros-users mailing list > ros-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/ros-users > > _______________________________________________ > ros-users mailing list > ros-users@code.ros.org > https://code.ros.org/mailman/listinfo/ros-users > > > _______________________________________________ > ros-users mailing list > ros-users@code.ros.org > https://code.ros.org/mailman/listinfo/ros-users > > > _______________________________________________ > ros-users mailing list > ros-users@code.ros.org > https://code.ros.org/mailman/listinfo/ros-users > >