[ros-users] remap and machine attributes

[Ken Conley]

Hi Mike,

remap applies only to ROS graph resources names. Machine names are not
considered as part of this designation. Graph resource names are
described here:

http://www.ros.org/wiki/Names

If you are using ROS 1.2, you may want to look into use the new <arg>
tag and $(arg) substitution variable.

 - Ken

On Mon, Sep 20, 2010 at 8:29 AM, Mike Purvis
<mpurvis at clearpathrobotics.com> wrote:
> Hey,
> It doesn't seem to be possible to use <remap> with machine names. Is this
> intentional? Following from point #3 on this page
> <http://www.ros.org/wiki/roslaunch/Architecture>, I expected to be able to
> structure my launch file like so:
> <launch>
>   <include file="all_machines.launch">
>   <remap from="robot_machine" to="cpr-demo-01" />
>   <remap from="joystick_machine" to="cpr-demo-02" />
>   <remap from="gui_machine" to="cpr-demo-03" />
>   <group ns="my_robot">
>     <include file="robot_stuff.launch" />
>     <include file="more_robot_stuff.launch" />
>   </group>
> </launch>
> The nodes listed inside of robot_stuff.launch and more_robot_stuff.launch
> would be able to refer to robot_machine and have that resolve to
> cpr-demo-01. Have I misunderstood the expected structure? Is the idea that
> the machine aliasing occurs in the file containing the master machines list?
> Thanks,
> Mike
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