Nothing built in at the moment, no.  You could rebroadcast the paths as
LINE_STRIP markers.

Josh

On Fri, Sep 10, 2010 at 6:17 AM, Daniel Maier <
maierd@informatik.uni-freiburg.de> wrote:

>
>
> Hi!
>
> Is there some way to render paths wider in rviz?
> You can easily change the color but not the width of the trajectory
> which would make it better recognizable.
>
> Thanks
> Dan
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