roslaunch not working during tutorial (rosversion?)

asked 2014-01-01 18:50:28 -0500

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When doing the roslaunch tutorial I was suppose to use this command:

roslaunch beginner_tutorials turtlemimic.launch

I get an error which prevents me from continuing the tutorial and I've set the ROS_PACKAGE_PATH to include the catkin_ws. (also am I suppose to add the path of the catkin or the rospackage). Anyways the error I get is:

WARNING: unable to configure logging. No log files will be generated
Checking log directory for disk usage. This may take awhile.
Press Ctrl-C to interrupt
Done checking log file disk usage. Usage is <1GB.

Invalid <param> tag: Cannot load command parameter [rosversion]: command [rosversion roslaunch] returned with code [1]. 

Param xml is <param command="rosversion roslaunch" name="rosversion"/>

Any help on this would be great as I am trying to learn ROS for the AUV we are making and I can't find anything related to this online.

Thanks

EDIT: Using ROS Hydro on Ubuntu 12.04

Comments

Can you run `rosversion roslaunch` ? Is this an installation from debs or from source?

ahendrix ( 2014-01-02 13:04:53 -0500 )edit

I have the same error when following the tutorial. When I run 'rosversion roslaunch' the version is 1.9.50.

h iman ( 2014-02-25 22:08:46 -0500 )edit

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answered 2014-02-25 23:41:24 -0500

h iman
36 ●2 ●4 ●6

updated 2014-02-26 23:19:44 -0500

@capa_matrix I had the same problem too and it was due to: (1) my workspace was not added to the ROS_PACKAGE_PATH or (2) I had change the variable ROS_PACKAGE_PATH to only ~/catkin_ws or elsewhere

Try this:

$ export ROS_PACKAGE_PATH=~/catkin_ws:$ROS_PACKAGE_PATH
$ echo $ROS_PACKAGE_PATH

if you get

 /YOUR_DIRECTORY/catkin_ws:/opt/ros/groovy/share:/opt/ros/groovy/stacks

then launch your .launch file

$ roslaunch beginner_tutorials turtlemimic.launch

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You should never need to manually extend your package path for catkin packages. Just make sure to build the workspace and afterwards source the generated setup file.

Dirk Thomas ( 2014-02-26 04:33:01 -0500 )edit

Thank you @Dirk Thomas. Does this means that I need to source the setup file in devel folder each time I need to work on a particular package?

h iman ( 2014-02-26 23:17:53 -0500 )edit

Whenever you want to use stuff from a catkin workspace you have to source its setup file since it defines various variables necessary to find packages, plugins, binaries, libraries etc.

Dirk Thomas ( 2014-02-27 05:25:48 -0500 )edit

Is there anyway to source the setup file automatically when I run roscore? Or is it not a good practice to do so?

h iman ( 2014-02-27 06:07:07 -0500 )edit

If you haven't source any setup file you won't even be able to run roscore because it will not be on your path.

Dirk Thomas ( 2014-02-27 06:24:16 -0500 )edit

You can source whatever setup file you like in your bashrc file. It is personal preference if you would like to do so. Since I have numerous workspace I just source them manually or via an alias.

Dirk Thomas ( 2014-02-27 06:25:13 -0500 )edit

I see. Thanks so much Dirk.

h iman ( 2014-02-27 06:53:05 -0500 )edit

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roslaunch not working during tutorial (rosversion?)

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