Hi Ben, I added all the folder ipc_bridge to Matlab path and rerun the example again, but this time I got error like this (in Matlab terminal) Warning: Directory access failure: /bin/bash. > In path at 110 In addpath at 87 In example_publisher at 9 Warning: Name is nonexistent or not a directory: rospack. > In path at 110 In addpath at 87 In example_publisher at 9 Warning: Name is nonexistent or not a directory: command not found/bin. > In path at 110 In addpath at 87 In example_publisher at 9 ??? Invalid MEX-file '/opt/ros/diamondback/stacks/ipc-bridge/ipc_msgs/ipc_geometry_msgs/bin/geometry_msgs_Twist.mexa64': libipc.so: cannot open shared object file: No such file or directory. Error in ==> example_publisher at 13 pid=geometry_msgs_Twist('connect','publisher','example_module','twist'); I also include a part of my Matlab in file "path" attached in this mail. Thanks for any help. Best, On Wed, May 25, 2011 at 6:45 PM, Benjamin Cohen wrote: > Hey Tien, > > It seems like your matlab path is screwed up. Can you post your matlab path > here? You can get the path by running "path". > > > thanks, > -- ben > > > > > On Wed, May 25, 2011 at 9:07 AM, Tien Thanh wrote: > >> Hi Cohen, >> >> It not worked with me, I can find the example_topic that list in the >> rostopic but the rostopic echo shows nothing and I got an error when execute >> example_publisher.m in Matlab >> >> Warning: Directory access failure: /bin/bash. >> > In path at 110 >> In addpath at 87 >> In example_publisher at 9 >> Warning: Name is nonexistent or not a directory: rospack. >> > In path at 110 >> In addpath at 87 >> In example_publisher at 9 >> Warning: Name is nonexistent or not a directory: command not found/bin. >> > In path at 110 >> In addpath at 87 >> In example_publisher at 9 >> ??? Undefined function or method 'geometry_msgs_Twist' for input arguments >> of type 'char'. >> >> Error in ==> example_publisher at 13 >> pid=geometry_msgs_Twist('connect','publisher','example_module','twist'); >> >> Thanks for any help. >> >> Best, >> On Wed, May 25, 2011 at 10:27 AM, Nikos Mitsou wrote: >> >>> >>> Yes, publisher and subscriber are working fine! >>> Thanks for the effort >>> Nikos >>> >>> >>> On 05/23/2011 11:26 PM, Benjamin Cohen wrote: >>> >>> Nikos, >>> >>> Actually, that part of the tutorial is outdated. No bin folders should >>> have been created in those folders. The bin folders should only be created >>> in the *ipc_[...]_msgs* folders such as ipc_msgs/ipc_geometry_msgs/. >>> >>> I'll update the tutorial. Have you tried the example >>> publisher/subscriber? >>> >>> -- ben >>> >>> >>> >>> On Mon, May 23, 2011 at 4:26 AM, Nikos Mitsou wrote: >>> >>>> Hello all >>>> >>>> I tried to install the interoperability system between Matlab and Ros. >>>> ( >>>> https://alliance.seas.upenn.edu/~meam620/wiki/index.php?n=Roslab.IpcBridge >>>> ) >>>> >>>> I followed the instructions and the compilation of the packages produced >>>> no error. >>>> According to the instructions, bin folders should have been created e.g. >>>> >>>> ipc_bridge_ros/bin >>>> ipc_bridge_matlab/bin >>>> >>>> but are actually missing. >>>> Has anyone experienced something similar? >>>> >>>> Thanks >>>> Nikos >>>> >>>> _______________________________________________ >>>> ros-users mailing list >>>> ros-users@code.ros.org >>>> https://code.ros.org/mailman/listinfo/ros-users >>>> >>>> >>> >>> _______________________________________________ >>> ros-users mailing listros-users@code.ros.orghttps://code.ros.org/mailman/listinfo/ros-users >>> >>> >>> >>> _______________________________________________ >>> ros-users mailing list >>> ros-users@code.ros.org >>> https://code.ros.org/mailman/listinfo/ros-users >>> >>> >> >> >> -- >> Tien Thanh Nguyen >> >> >> _______________________________________________ >> 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 > > -- Tien Thanh Nguyen