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