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2018-05-11 01:53:35 -0600 commented answer Does gazebo_ros launch support bullet?

Does it mean we can ignore this warning ?.

2018-05-10 23:56:18 -0600 commented answer gazebo crash when using .png heightmap and Velodyne 3D LIDARs

I.ve switched physics engine to bullet,and used a smallest heightmap that gazebo can load. it worked out, though the re

2018-05-10 23:56:06 -0600 commented answer gazebo crash when using .png heightmap and Velodyne 3D LIDARs

I.ve switched physics engine to bullet,and used a smallest heightmap that gazebo can load. it worked out, though the re

2018-05-10 23:55:41 -0600 commented answer gazebo crash when using .png heightmap and Velodyne 3D LIDARs

I.ve switched physics engine to bullet,and used a smallest heightmap that gazebo can load. it worked out, though the re

2018-05-10 23:46:44 -0600 marked best answer gazebo crash when using .png heightmap and Velodyne 3D LIDARs

I'm testing Velodyne high definition 3D LIDARs in gazebo:

roslaunch velodyne_gazebo example.launch

It will load a 16 laser model. And I have already prepared a heightmap following this tutorial . After inserting the heightmap(65x65 (pixels), 10mx10m, a larger map also results in crash ) I made, gazebo will not responde. Sim time and real time will stop.

And in rviz, ROS time will stop, but wall time still goes.

Run roswtf, 3 warnings were found:

WARNING The following node subscriptions are unconnected:
 * /gazebo:
   * /gazebo/set_model_state
   * /gazebo/set_link_state

WARNING These nodes have died:
 * spawn_model-4

WARNING No tf messages

Sometimes the real time foctor will be around 0.3 when I use 1 beam LiDAR in a .png heightmap.
I think the reason gazebo will crash is that my laptop‘s hardware performance is not good enough.

Are there any ways to optimize the program to continue the simulation with my laptop? or should I use another computer?? Or maybe there is another reason for the crash.

update: I tried using my PC, there is still the same problem.

Thanks in advance.

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2018-05-03 03:26:28 -0600 asked a question how to simulate Husky using Gazebo8

how to simulate Husky using Gazebo8 I've installed Gazbeo8 and ROS Kinetic. I tried to install Husky packages, but some

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2017-12-15 07:49:46 -0600 commented answer Explain Gazebo friction coefficients <mu> and <mu2>?

”ODE will automatically compute the first and second friction directions for us. Note, you can manually specify the firs

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2017-12-07 05:08:09 -0600 edited question gazebo crash when using .png heightmap and Velodyne 3D LIDARs

gazebo crash when using .png heightmap and Velodyne 3D LIDARs I'm testing Velodyne high definition 3D LIDARs in gazebo:

2017-12-07 05:00:29 -0600 edited question gazebo crash when using .png heightmap and Velodyne 3D LIDARs

gazebo crash when using .png heightmap and Velodyne 3D LIDARs I'm testing Velodyne high definition 3D LIDARs in gazebo:

2017-12-07 05:00:14 -0600 received badge  Popular Question (source)
2017-12-06 21:23:09 -0600 edited question gazebo crash when using .png heightmap and Velodyne 3D LIDARs

gazebo crash when using .png heightmap and Velodyne 3D LIDARs I'm testing Velodyne high definition 3D LIDARs in gazebo:

2017-12-06 19:08:30 -0600 edited question gazebo crash when using .png heightmap and Velodyne 3D LIDARs

gazebo crash when using .png heightmap and Velodyne 3D LIDARs I'm testing Velodyne high definition 3D LIDARs in gazebo:

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2017-12-05 19:09:51 -0600 edited question gazebo crash when using .png heightmap and Velodyne 3D LIDARs

gazebo crash when using .png heightmap and Velodyne 3D LIDARs I'm testing Velodyne high definition 3D LIDARs in gazebo:

2017-12-05 19:08:49 -0600 edited question gazebo crash when using .png heightmap and Velodyne 3D LIDARs

gazebo crash when using .png heightmap and Velodyne 3D LIDARs I'm testing Velodyne high definition 3D LIDARs in gazebo:

2017-12-05 18:53:16 -0600 edited question gazebo crash when using .png heightmap and Velodyne 3D LIDARs

gazebo crash when using .png heightmap and Velodyne 3D LIDARs I'm testing Velodyne high definition 3D LIDARs in gazebo:

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2017-12-05 08:36:08 -0600 asked a question gazebo crash when using .png heightmap and Velodyne 3D LIDARs

gazebo crash when using .png heightmap and Velodyne 3D LIDARs I'm testing Velodyne high definition 3D LIDARs in gazebo:

2017-12-02 02:58:44 -0600 edited answer heightmap insertion unsuccessful with gazebo 7

Update gazebo to the 7.9. http://gazebosim.org/tutorials?tut=install_ubuntu&cat=install get OSRF keys, and then su

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2017-12-02 02:58:36 -0600 marked best answer heightmap insertion unsuccessful with gazebo 7

I want to use heightmap created by myself in gazebo, and I`ve followed tutorials like this one and this. I use Ubuntu 16.04 and gazebo 7 as the second tutorial requires.

At first , I created a heightmap as the first tutorial instructed, and I tested with my gazebo. It worked out, though occasionally the heightmap wasn't loaded fully . Only half of the terrain was loaded, and the other half was flat.

But after a few hours I tried again. But no matter how I try , my gazebo always crashes after I insert heightmap. And the error msg is always the same:

gzclient: /usr/include/boost/smart_ptr/shared_ptr.hpp:648: typename boost::detail::sp_member_access<T>::type boost::shared_ptr<T>::operator->() const [with T = gazebo::msgs::Response; typename boost::detail::sp_member_access<T>::type = gazebo::msgs::Response*]: Assertion `px != 0' failed.

I've checked a question asked by others before.But is there any better solution to this problem? Updating gazebo to 8 may work, but it's not convenient and the tutorials insert heightmap with gazebo 7 successfully.

Thanks in advance.

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2017-12-02 02:58:08 -0600 answered a question heightmap insertion unsuccessful with gazebo 7

Update gazebo to the 7.9. http://gazebosim.org/tutorials?tut=install_ubuntu&cat=install get OSRF keys, and then su

2017-12-01 22:55:08 -0600 commented question heightmap insertion unsuccessful with gazebo 7

My image is 129x129. Gazebo 7.9 works. Thanks.

2017-12-01 21:15:40 -0600 commented question heightmap insertion unsuccessful with gazebo 7

My image is 129x129. I will try 7.9. Thanks.

2017-12-01 21:15:29 -0600 commented question heightmap insertion unsuccessful with gazebo 7

My image is 129x129. I will try 7.7. Thanks.

2017-12-01 20:27:05 -0600 commented question heightmap insertion unsuccessful with gazebo 7

My image is 129x129. I will try to use 7.7. Thanks.

2017-12-01 20:17:35 -0600 commented question heightmap insertion unsuccessful with gazebo 7

My image is 129x129. I will try to use 7.7

2017-12-01 09:32:06 -0600 asked a question heightmap insertion unsuccessful with gazebo 7

gazebo 7 crash on heightmap insertion I want to use heightmap created by myself in gazebo, and I`ve followed tutorials