Hi Steven, <br>We have chosen to use the full 3D representations even when doing 2D processing so that we don&#39;t write a 2d and a 3D version of every tool. So we just fill in zero the non planar values.<br><br>Tully<br>

<br><div class="gmail_quote">On Thu, Dec 2, 2010 at 9:22 AM, Steven Bellens <span dir="ltr">&lt;<a href="mailto:steven.bellens@mech.kuleuven.be">steven.bellens@mech.kuleuven.be</a>&gt;</span> wrote:<br><blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">

Hi,<br>
<br>
I&#39;m looking for a message to represent a velocity in a plane (x, y,<br>
theta). Is there any existing message dedicated for this already? Or<br>
is it most common to use the geometry_msgs/Twist and leave blank the<br>
irrelevant variables?<br>
<br>
regards,<br>
<br>
Steven<br>
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</blockquote></div><br><br clear="all"><br>-- <br>Tully Foote<br>Systems Engineer<br>Willow Garage, Inc.<br><a href="mailto:tfoote@willowgarage.com">tfoote@willowgarage.com</a><br>(650) 475-2827<br>