On Wed, Jul 28, 2010 at 9:16 AM, Adam Leeper <aleeper@stanford.edu> wrote:

I ran into this problem too. Roslaunch seems to be prepending 2 arguments to the argument list, though I don't remember what they are right now.

I've resorted to avoiding arguments altogether, preferring to use parameters, though perhaps this is not the best method.

--Adam

Adam Leeper
Stanford University
aleeper@stanford.edu
719.358.3804

On Wed, Jul 28, 2010 at 9:01 AM, Ivan Dryanovski <ivan.dryanovski@gmail.com> wrote:
I can't test this right now, but I encountered this before, and this
is what I remember. When I did something like this:

<node pkg="x" type="y" name="z" args="ARG" output="screen"/>

This would start program y with 4 arguments, the 4th of which is "ARG"

however, if you do "rosrun x y ARG"

this would pass 2 arguments to the program, the 2nd being ARG

Ivan

On Wed, Jul 28, 2010 at 11:51 AM, Steven Bellens
<steven.bellens@mech.kuleuven.be> wrote:
> Hi,
>
> I'm trying to start a rosnode with the roslaunch command and a launch file.
> The command I use to start the program manually is:
>
> 'rosrun ocl_2.0 deployer-gnulinux -s deployer.xml'
>
> which executes 'deployer-gnulinux' in the ocl_2.0 package with
> arguments '-s deployer.xml'
> My pelican.launch file contains:
>
> <launch>
> <node name="pelican" pkg="ocl_2.0" type="deployer-gnulinux" args="-s
> deployer.xml" output="screen"/>
> </launch>
>
> but when I launch this with 'roslaunch pelican.launch' it says:
> "...
> Exception:too many positional options
> Allowed options:
> -h [ --help ] Show program usage
> -s [ --start ] arg Deployment configuration file (eg 'config-file.xml')
> --site-file arg Site deployment file (eg 'Deployer-site.cpf' or
> 'Deployer-site.xml')
> -l [ --log-level ] arg Level at which to log from RTT (case-insensitive)
> Never,Fatal,Critical,Error,Warning,Info,Debug,Realtim
> e
> --no-consolelog Turn off RTT logging to the console (will still log
> to 'orocos.log')
> --require-name-service Require CORBA name service
> --DeployerName arg Name of deployer component (the --DeployerName flag
> is optional)
> ..."
>
> Which looks like the args don't get passed in the right way to the
> program executable. What exactly happens when this roslaunch command
> is executed and the args are passed to the goal program? Is it
> possible roslaunch adds extra elements here? How can I make roslaunch
> pass the right arguments to the program executable?
>
> best regards,
>
> Steven
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