[ros-users] Navigation stack and stage

nitinDhiman nitinkdhiman at gmail.com
Sat Jul 10 08:42:11 UTC 2010


Hi,
I am trying this tutorial on Boxturtle installed using deb packages on
Debian Squeeze. I am having few errors:

 nitin at tangri:/tmp/ros_tutorial/awesomeros$ roslaunch awesomeros
robot.launch 
... logging to
/home/nitin/.ros/log/8897cb0a-8bfc-11df-ac0c-00248119e15c/roslaunch-tangri-26243.log

Traceback (most recent call last):
  File "/opt/ros/boxturtle/ros/tools/roslaunch/src/roslaunch/__init__.py",
line 198, in main
    p.start()
  File "/opt/ros/boxturtle/ros/tools/roslaunch/src/roslaunch/parent.py",
line 217, in start
    self._start_infrastructure()
  File "/opt/ros/boxturtle/ros/tools/roslaunch/src/roslaunch/parent.py",
line 180, in _start_infrastructure
    self._load_config()
  File "/opt/ros/boxturtle/ros/tools/roslaunch/src/roslaunch/parent.py",
line 106, in _load_config
    self.config = roslaunch.config.load_config_default(self.roslaunch_files,
self.port)
  File "/opt/ros/boxturtle/ros/tools/roslaunch/src/roslaunch/config.py",
line 371, in load_config_default
    loader.load(f, config, verbose=verbose)
  File "/opt/ros/boxturtle/ros/tools/roslaunch/src/roslaunch/xmlloader.py",
line 662, in load
    self._load_launch(launch, ros_config, is_core=core, filename=filename,
verbose=verbose)
  File "/opt/ros/boxturtle/ros/tools/roslaunch/src/roslaunch/xmlloader.py",
line 637, in _load_launch
    self._recurse_load(ros_config, launch.childNodes, self.root_context,
None, is_core, verbose)
  File "/opt/ros/boxturtle/ros/tools/roslaunch/src/roslaunch/xmlloader.py",
line 610, in _recurse_load
    default_machine = self._include_tag(tag, context, ros_config,
default_machine, is_core, verbose)
  File "/opt/ros/boxturtle/ros/tools/roslaunch/src/roslaunch/xmlloader.py",
line 564, in _include_tag
    default_machine, is_core, verbose)
  File "/opt/ros/boxturtle/ros/tools/roslaunch/src/roslaunch/xmlloader.py",
line 590, in _recurse_load
    n = self._node_tag(tag, context.child(''), ros_config, default_machine,
verbose=verbose)
  File "/opt/ros/boxturtle/ros/tools/roslaunch/src/roslaunch/xmlloader.py",
line 357, in _node_tag
    self._rosparam_tag(t, param_ns, ros_config, verbose=verbose)
  File "/opt/ros/boxturtle/ros/tools/roslaunch/src/roslaunch/xmlloader.py",
line 198, in _rosparam_tag
    cmd, ns, file, param = self.opt_attrs(tag, context,
(XmlLoader.ROSPARAM_OPT_ATTRS))
  File "/opt/ros/boxturtle/ros/tools/roslaunch/src/roslaunch/xmlloader.py",
line 165, in opt_attrs
    return [self.resolve_args(tag_value(tag,a), context) for a in attrs]
  File "/opt/ros/boxturtle/ros/tools/roslaunch/src/roslaunch/xmlloader.py",
line 146, in resolve_args
    return roslib.substitution_args.resolve_args(args,
context=context.resolve_dict, resolve_anon=self.resolve_anon)
  File "/opt/ros/boxturtle/ros/core/roslib/src/roslib/substitution_args.py",
line 105, in resolve_args
    resolved = resolved[0:idx-len(arg)] +
roslib.packages.get_pkg_dir(args[0]) + resolved[idx:]
  File "/opt/ros/boxturtle/ros/core/roslib/src/roslib/packages.py", line
213, in get_pkg_dir
    raise InvalidROSPkgException("Cannot locate installation of package %s:
%s. ROS_ROOT[%s] ROS_PACKAGE_PATH[%s]"%(package, rperr.strip(), ros_root,
ros_package_path))
InvalidROSPkgException: Cannot locate installation of package test2:
[rospack] couldn't find package [test2]. ROS_ROOT[/opt/ros/boxturtle/ros]
ROS_PACKAGE_PATH[/opt/ros/boxturtle/stacks:/tmp/ros_tutorial]

It is reporting non-availability of pkg test2. I just updated move_base.xml 
to path of required files. On launching again, navfn_yaml is not found. Here
is the output:

nitin at tangri:/tmp/ros_tutorial/awesomeros$ roslaunch awesomeros robot.launch 
... logging to
/home/nitin/.ros/log/8897cb0a-8bfc-11df-ac0c-00248119e15c/roslaunch-tangri-26262.log

error loading <rosparam> tag: 
	file does not exist [navfn_params.yaml]
XML is <rosparam command="load" file="navfn_params.yaml"/>

Am I missing something?

Also about running this tutorial on Cturtle (installed for deb), has anyone
updated world file for stage. I do not have knowledge about stage. I had
tried augmenting pose values with extra argument is not helping. Result is a
blank window!

Thanks
nitin


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