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
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 110In addpath at 87In example_publisher at 9Warning: Name is nonexistent or not a directory: rospack.> In path at 110In addpath at 87In example_publisher at 9Warning: Name is nonexistent or not a directory: command not found/bin.> In path at 110In addpath at 87In 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 13pid=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 <bencohen2@gmail.com> 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 <nttputus@gmail.com> 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 MatlabWarning: Directory access failure: /bin/bash.> In path at 110In addpath at 87In example_publisher at 9Warning: Name is nonexistent or not a directory: rospack.> In path at 110In addpath at 87In example_publisher at 9Warning: Name is nonexistent or not a directory: command not found/bin.> In path at 110In addpath at 87In example_publisher at 9??? Undefined function or method 'geometry_msgs_Twist' for input arguments of type 'char'.Error in ==> example_publisher at 13pid=geometry_msgs_Twist('connect','publisher','example_module','twist');Thanks for any help.Best,--On Wed, May 25, 2011 at 10:27 AM, Nikos Mitsou <nmitsou@lsr.ei.tum.de> 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 <nmitsou@lsr.ei.tum.de> 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
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