Hey Tien, I've never seen a 'Directory access failure' warning message before. From a quick google search I found this page: http://www.mathworks.com/support/solutions/en/data/1-18KUW/index.html?product=ML&solution=1-18KUW It seems like you didn't compile ipc or it's not in your path..."libipc.so: cannot open shared object file: No such file or directory." Can you run 'locate libipc.so'? Is it found? Did you run 'rosmake ipc_bridge_ros' ? -- ben On Thu, May 26, 2011 at 4:29 AM, Tien Thanh wrote: > 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 > > > _______________________________________________ > ros-users mailing list > ros-users@code.ros.org > https://code.ros.org/mailman/listinfo/ros-users > >