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Dear all,

as with the latest gazebo version (1.7.12-s1367893033~precise) in groovy, it seems that our *.urdf.xacro files are finally not supported anymore.

I found out about the latest .sdf format (1.3) and already tried to update some of our files. I.e. I replaced

  <xacro:macro name="sick_s300_laser_gazebo_v0" params="name ros_topic update_rate min_angle max_angle">
    <gazebo reference="${name}_link">
      <sensor:ray name="${name}">
        <rayCount>541</rayCount>
        <rangeCount>541</rangeCount>
        <laserCount>1</laserCount>

        <origin>0.0 0.0 0.0</origin>
        <displayRays>false</displayRays>

        <minAngle>${min_angle*180.0/M_PI}</minAngle>
        <maxAngle>${max_angle*180.0/M_PI}</maxAngle>

        <minRange>0.05</minRange>
        <maxRange>30.0</maxRange>
        <resRange>0.03</resRange>
        <updateRate>${update_rate}</updateRate>
        <controller:gazebo_ros_laser name="gazebo_ros_${name}_controller" plugin="libgazebo_ros_laser.so">
          <gaussianNoise>0.005</gaussianNoise>
          <alwaysOn>true</alwaysOn>
          <updateRate>${update_rate}</updateRate>
          <topicName>${ros_topic}</topicName>
          <frameName>/${name}_link</frameName>
          <interface:laser name="gazebo_ros_${name}_iface" />
        </controller:gazebo_ros_laser>
      </sensor:ray>
      <material value="IPA/LightGrey" />
    </gazebo>
  </xacro:macro>

with

  <xacro:macro name="sick_s300_laser_gazebo_v0" params="name ros_topic update_rate min_angle max_angle">
    <gazebo reference="${name}_link">
    <sensor name="${name}" type="ray">
        <ray>
            <scan>
                <horizontal>
                    <samples>541</samples>
                    <resolution>1.0</resolution>
                    <min_angle>${min_angle*180.0/M_PI}</min_angle>
                    <max_angle>${max_angle*180.0/M_PI}</max_angle>
                </horizontal>
            </scan>
            <range>
                <min>0.05</min>
                <max>30.0</max>
                <resolution>0.03</resolution>
            </range>
        </ray>
    </sensor>       

      <material value="IPA/LightGrey" />
    </gazebo>
  </xacro:macro>

for the urdf.xacro files for one of our sensors.

However, if I then spawn our robot, I get the following message from gazebo:

fxm@sony-fxm:/opt/ros/groovy/stacks/simulator_gazebo/gazebo_worlds/worlds$ roslaunch gazebo_worlds empty_world.launch 
... logging to /home/fxm/.ros/log/320cbf70-bca0-11e2-9ff7-00271039ca78/roslaunch-sony-fxm-20823.log
Checking log directory for disk usage. This may take awhile.
Press Ctrl-C to interrupt
Done checking log file disk usage. Usage is <1GB.

started roslaunch server http://sony-fxm:55478/

SUMMARY
========

PARAMETERS
 * /rosdistro
 * /rosversion
 * /use_sim_time

NODES
  /
    gazebo (gazebo/gazebo)
    gazebo_gui (gazebo/gui)

auto-starting new master
process[master]: started with pid [20837]
ROS_MASTER_URI=http://localhost:11311

setting /run_id to 320cbf70-bca0-11e2-9ff7-00271039ca78
process[rosout-1]: started with pid [20850]
started core service [/rosout]
process[gazebo-2]: started with pid [20864]
process[gazebo_gui-3]: started with pid [20876]
Gazebo multi-robot simulator, version 1.5.0
Copyright (C) 2013 Open Source Robotics Foundation.
Released under the Apache 2 License.
http://gazebosim.org

Gazebo multi-robot simulator, version 1.5.0
Copyright (C) 2013 Open Source Robotics Foundation.
Released under the Apache 2 License.
http://gazebosim.org

Warning [parser.cc:361] Converting a deprecated SDF source[/opt/ros/groovy/stacks/simulator_gazebo/gazebo_worlds/worlds/empty.world].
Set SDF value
  Version[1.2] to Version[1.3]
  Please use the gzsdf tool to update your SDF files.
    $ gzsdf convert [sdf_file]
Msg Waiting for master[ INFO] [1368540701.989137839]: waitForService: Service [/gazebo/set_physics_properties] has not been advertised, waiting...

Msg Connected to gazebo master @ http://127.0.0.1:11345
Msg Publicized address: 10.17.55.151
Msg Waiting for master
Msg Connected to gazebo master @ http://127.0.0.1:11345
Msg Publicized address: 10.17.55.151
Error [Events.hh:141] Events::ConnectWorldUpdateStart is deprecated in v 1.5.0. Please use Events::ConnectWorldUpdateBegin
Error [Events.hh:141] Events::ConnectWorldUpdateStart is deprecated in v 1.5.0. Please use Events::ConnectWorldUpdateBegin
Error [Events.hh:141] Events::ConnectWorldUpdateStart is deprecated in v 1.5.0. Please use Events::ConnectWorldUpdateBegin
[ INFO] [1368540703.812490419]: joint trajectory plugin missing <updateRate>, defaults to 0.0 (as fast as possible)
Error [Events.hh:141] Events::ConnectWorldUpdateStart is deprecated in v 1.5.0. Please use Events::ConnectWorldUpdateBegin
[ INFO] [1368540703.842767312, 0.023000000]: waitForService: Service [/gazebo/set_physics_properties] is now available.
[ INFO] [1368540703.883032363, 0.057000000]: Starting to spin physics dynamic reconfigure node...
Warning [parser.cc:377] SDF has no <sdf> element in file[data-string]
Dbg extension [<sensor name="base_laser_front" type="ray"><ray><scan><horizontal><samples>541</samples><resolution>1.0</resolution><min_angle>-135.000315689</min_angle><max_angle>135.000315689</max_angle></horizontal></scan><range><min>0.05</min><max>30.0</max><resolution>0.03</resolution></range></ray></sensor>] not converted.
Dbg extension [<sensor name="base_laser_rear" type="ray"><ray><scan><horizontal><samples>541</samples><resolution>1.0</resolution><min_angle>-135.000315689</min_angle><max_angle>135.000315689</max_angle></horizontal></scan><range><min>0.05</min><max>30.0</max><resolution>0.03</resolution></range></ray></sensor>] not converted.
Dbg [base_footprint] has no parent joint
Warning [parser.cc:314] parse from urdf.

The robot spawns within gazebo but there no sensor message is published. It is similar for our controllers. They don't work anymore as well.

My questions now are:

  • Why are the gazebo extensions not converted? Is there something wrong?

  • What is best practise to convert .urdf.xacro files into the new .sdf format?

  • Where can I find examples? Has the PR2 been updated yet?

With best regards,

Felix

Originally posted by Felix Messmer on ROS Answers with karma: 198 on 2013-05-14

Post score: 2

Original comments

Comment by Gazer on 2013-05-14:
hello, did u figure it out? I also have the same problem. I am interested in opening up .xacro.urdf file using gazebo 1.7. Did you successfully open it up?

Comment by Felix Messmer on 2013-05-14:
Hi, I was able to load a robot modeled as urdf.xacro. However, it's rather only the meshes and kinematic chain - as the problem is that the sensors and controllers from the urdf.xacro are not working anymore, i.e. the robot cannot "see" and cannot "move"....

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1 Answer 1

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Looks like you already asked on answers.gazebosim.org and got an answer there. Also, these days there's a Tutorial: Using a URDF in Gazebo.

Originally posted by 130s with karma: 10937 on 2015-07-03

This answer was ACCEPTED on the original site

Post score: 0

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