Hi Aaron, <br>If you are not publishing tf messages you need to make sure the fixed_frame and target_frame in rviz are set to the frame in which you are publishing thes scans.  In the case of the 2nd tutorial you linked to it should be &quot;laser_frame&quot;<br>

<br>Also in the LaserScan display there is an error field with information if it cannot display anything.  This should tell you why rviz cannot update the display.  If you&#39;re still having trouble please send that message in your reply.  <br>

<br>Tully<br><br><div class="gmail_quote">On Thu, Oct 28, 2010 at 7:21 AM, Aaron Martinez Romero <span dir="ltr">&lt;<a href="mailto:aaronmartinezromero@gmail.com">aaronmartinezromero@gmail.com</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;">

but...  can I display directly in rviz a &quot;sensor_msgs/LaserScan&quot; message ??  or I need too the &quot;/tf [tf/tfMessage]&quot;<br><br>because in the tutorial of <br><b><br><a href="http://www.ros.org/wiki/laser_pipeline/Tutorials/IntroductionToWorkingWithLaserScannerData#Visualizing_Your_Laser_Scan" target="_blank">http://www.ros.org/wiki/laser_pipeline/Tutorials/IntroductionToWorkingWithLaserScannerData#Visualizing_Your_Laser_Scan</a>, </b><br>


<br>I can display the data in rviz without problem (using laser.bag --&gt; <a href="http://vault.willowgarage.com/wgdata1/vol1/wiki_docs/laser_pipeline/laser.bag" target="_blank">http://vault.willowgarage.com/wgdata1/vol1/wiki_docs/laser_pipeline/laser.bag</a> ).<br>


<br>But with the code of this example<br>   &quot;<b><a href="http://www.ros.org/wiki/navigation/Tutorials/RobotSetup/Sensors#Writing_Code_to_Publish_a_LaserScan_Message" target="_blank">http://www.ros.org/wiki/navigation/Tutorials/RobotSetup/Sensors#Writing_Code_to_Publish_a_LaserScan_Message</a></b>&quot;, <br>


<br>I have problems to display the fake data generated by this code.<br><br>Why????<br><br>Best regards.<br><br><br><div class="gmail_quote">2010/10/27 Dan Lazewatsky <span dir="ltr">&lt;<a href="mailto:lazewatskyd@cse.wustl.edu" target="_blank">lazewatskyd@cse.wustl.edu</a>&gt;</span><br>


<blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;"><div class="im">There&#39;s a section in the tutorial &quot;Introduction to Working With Laser Scanner Data&quot; that covers this: <a href="http://www.ros.org/wiki/laser_pipeline/Tutorials/IntroductionToWorkingWithLaserScannerData#Visualizing_Your_Laser_Scan" target="_blank">http://www.ros.org/wiki/laser_pipeline/Tutorials/IntroductionToWorkingWithLaserScannerData#Visualizing_Your_Laser_Scan</a><br>



<br><div>-Dan</div></div><div><br><div class="gmail_quote"><div class="im"><div><div></div><div>On Wed, Oct 27, 2010 at 9:51 AM, Aaron Martinez Romero <span dir="ltr">&lt;<a href="mailto:aaronmartinezromero@gmail.com" target="_blank">aaronmartinezromero@gmail.com</a>&gt;</span> wrote:<br>



</div></div></div><blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;"><div><div></div><div><div class="im">Hello, <br><br>I am with this example, and I want to show the fake data in rviz, but I don&#39;t know how can do it.<br>



<br></div><a href="http://www.ros.org/wiki/navigation/Tutorials/RobotSetup/Sensors" target="_blank">http://www.ros.org/wiki/navigation/Tutorials/RobotSetu&lt;a href=&quot;p/S</a><a href="http://www.ros.org/wiki/navigation/Tutorials/RobotSetup/Sensors" target="_blank">ensors</a><br clear="all">



&lt;a href=&quot;<div class="im"><br>I am trying display the data, because later I will try to write a new driver for a old Laser hardware (PLS200-214)<br><br>Thanks.<br>Best regards...<br><font color="#888888">-- <br>Atentamente,<br>

Aarón Martínez Romero<br>

Ingeniero en Informática<br>
Tlf: 600 283 349<br><a href="http://www.AaronMR.com" target="_blank">http://www.AaronMR.com</a><br>
</font><br></div></div></div><div class="im">_______________________________________________<br>
ros-users mailing list<br>
<a href="mailto:ros-users@code.ros.org" target="_blank">ros-users@code.ros.org</a><br>
<a href="https://code.ros.org/mailman/listinfo/ros-users" target="_blank">https://code.ros.org/mailman/listinfo/ros-users</a><br>
<br></div></blockquote></div><br></div><div class="im">
<br>_______________________________________________<br>
ros-users mailing list<br>
<a href="mailto:ros-users@code.ros.org" target="_blank">ros-users@code.ros.org</a><br>
<a href="https://code.ros.org/mailman/listinfo/ros-users" target="_blank">https://code.ros.org/mailman/listinfo/ros-users</a><br>
<br></div></blockquote></div><div><div></div><div class="h5"><br><br clear="all"><br>-- <br>Atentamente,<br>Aarón Martínez Romero<br>Ingeniero en Informática<br>Tlf: 600 283 349<br><a href="http://www.AaronMR.com" target="_blank">http://www.AaronMR.com</a><br>


</div></div><br>_______________________________________________<br>
ros-users mailing list<br>
<a href="mailto:ros-users@code.ros.org">ros-users@code.ros.org</a><br>
<a href="https://code.ros.org/mailman/listinfo/ros-users" target="_blank">https://code.ros.org/mailman/listinfo/ros-users</a><br>
<br></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>