error when running /demo/advertiseService.lua

[jingweiz]

Hi,
I tried to run the advertiseService.lua from the demo but get the following error msg:

Service roscpp/GetLoggers
MD5: 32e97e85527d4678a8f9279894bb64b0
Message roscpp/GetLoggers_Request
Fields:
MD5: d41d8cd98f00b204e9800998ecf8427e

Message roscpp/GetLoggers_Response
Fields:
roscpp/Logger[] loggers
Message roscpp/Logger
Fields:
string name
string level
MD5: a6069a2ff40db7bd32143dd66e1f408e
MD5: 32e97e85527d4678a8f9279894bb64b0

~/deepnet/torch/install/bin/luajit: ...g/deepnet/torch/install/share/lua/5.1/ros/NodeHandle.lua:168: Invalid type of explicitly specified callback queue.
stack traceback:
[C]: in function 'error'
...g/deepnet/torch/install/share/lua/5.1/ros/NodeHandle.lua:168: in function 'advertiseService'
advertiseService.lua:36: in main chunk
[C]: in function 'dofile'
...pnet/torch/install/lib/luarocks/rocks/trepl/scm-1/bin/th:145: in main chunk
[C]: at 0x00406670

Can you help me look into this issue? Thanks in advance.
btw, this is a super cool repository, exactly what I'm looking for and it is really helpful, thanks for the effort put into this!

[andreaskoepf]

@ jingweiz could you please paste the following code block it into a th session and check whether the last statement evaluates to true?

ros = require 'ros'
q = ros.CallbackQueue()
torch.isTypeOf(q, ros.CallbackQueue)

If this is not working for you please check whether you have a current version of torch installed which allows to specify a namespace for classes.