The <group> tag

The <group> tag makes it easier to apply settings to a group of nodes. It has an ns attribute that lets you push the group of nodes into a separate namespace. You can also use the <remap> tag to apply remap setting across the group.


  • ns="namespace" (optional)

    • Assign the group of nodes to the specified namespace. The namespace can be global or relative, though global namespaces are discouraged.

    clear_params="true|false" (optional)

    • Delete all parameters in the group's namespace before launch. This feature is very dangerous and should be used with caution. ns must be specified.


The <group> tag is equivalent to the top-level <launch> tag and simply acts as a container for the tags within. This means that you can use any tag as you would normally use it within a <launch> tag.

Wiki: roslaunch/XML/group (last edited 2011-09-15 16:08:36 by KenConley)