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2018-10-16 12:54:08 -0500 commented answer gazebo7: hangs on downloading models

If I remember correctly, the problem was doing it in C++, the code should be this one: https://bitbucket.org/osrf/gazebo

2018-10-16 12:32:54 -0500 commented answer gazebo7: hangs on downloading models

The problem seems to be with the use of CURL inside Gazebo. When trying to get http://gazebosim.org/models/database.conf

2018-10-16 12:05:19 -0500 edited answer How to register joint state variable to introspection manager?

Several variables are already registered by default, so you don't need to register them, you just need to create the app

2018-10-16 12:04:37 -0500 answered a question How to register joint state variable to introspection manager?

Several variables are already registered by default, so you don't need to register them, you just need to create the app

2018-10-15 15:05:50 -0500 commented answer How to set physics engine in Gazebo through ROS

That's strange, it works for me. Do you get the correct engine if you load the world without passing through ROS? Maybe

2018-10-15 14:40:21 -0500 commented answer How do I control the robot without using ROS?

You write a plugin like KeyboardGUIPlugin which publishes velocity commands. Here's a demo world: https://bitbucket.org/

2018-10-15 14:39:12 -0500 commented answer How do I control the robot without using ROS?

You can use the KeyboardGUIPlugin, here's a demo world: https://bitbucket.org/osrf/gazebo/src/f4e51e8f64001beda70615ab89

2018-10-15 14:37:20 -0500 commented answer How to set physics engine in Gazebo through ROS

How are you checking which physics engine is being loaded, through the GUI?

2018-10-15 11:55:52 -0500 answered a question OSRF FRC 2016 Competition

The code is hosted here, but beware that it hasn't been maintained for 2 years: https://bitbucket.org/osrf/frc2016_comp

2018-10-15 11:49:30 -0500 answered a question gazebo7: hangs on downloading models

I think http://gazebosim.org/models was supposed to be redirecting to http://models.gazebosim.org/. I see two solutions

2018-10-12 09:49:11 -0500 answered a question How to set physics engine in Gazebo through ROS

If I rewrite the type to an nonexistent engine type and launch the world from ROS launch file, there is no error. If

2018-10-12 09:35:24 -0500 commented question Floor and texture changed black?

Please remove the answer, and update the question with the picture instead ;)

2018-10-10 22:12:50 -0500 received badge  Nice Answer (source)
2018-10-10 13:50:57 -0500 commented question libgazebo_ros_diff_drive publishes tf based on wall clock time instead of sim time

There's been a recent ABI breakage on ROS time which has been fixed, could you try upgrading to the latest Kinetic debs

2018-10-10 13:50:41 -0500 commented question libgazebo_ros_diff_drive publishes tf based on wall clock time instead of sim time

There's been a recent ABI breakage on ROS time, could you try upgrading to the latest Kinetic debs and try again?

2018-10-10 11:47:45 -0500 answered a question subscribing gazebo messages for joint

There are several ways, here's two of them: You could send a request for entity_info like it's done here. You could us

2018-10-09 12:14:28 -0500 commented question gazebo world file show nothing [tutorial]

How did you install Gazebo? Also, what models are listed under the Models tab on the left pane?

2018-10-09 10:41:53 -0500 commented question gazebo world file show nothing [tutorial]

Can you add --verbose after gazebo to see what errors are printed? Also, is velodyne.world in the home directory (the on

2018-10-08 11:40:25 -0500 answered a question Is it possible to define a world plugin outside the world file?

There may be other ways, but one way could be to turn the plugin into a SystemPlugin, which can be loaded from the comma

2018-10-08 10:26:40 -0500 received badge  Nice Answer (source)
2018-10-03 08:58:24 -0500 commented answer How to add ignition msgs to ROS?

Correct. You can use an Ignition node to subscribe to the message and then convert it to ROS if necessary.

2018-10-03 08:37:40 -0500 edited question "The minimum corner of the box must be less than or equal to maximum corner"' failed. SDF model

"The minimum corner of the box must be less than or equal to maximum corner"' failed. SDF model I am trying to import a

2018-10-03 08:32:32 -0500 answered a question Comparison between Gazebo and V-REP

There are several things about Gazebo on that paper which are not true. And a few others which may have been true severa

2018-10-02 12:08:13 -0500 answered a question How to add ignition msgs to ROS?

ROS uses its own message description; Ignition Messages is a separate format. All ROS tools will only handle ROS messag

2018-10-02 12:06:30 -0500 commented question Floor and texture changed black?

When you run in verbose mode, do you get any warnings about missing material files?

2018-09-17 11:18:45 -0500 answered a question Tower of Hanoi: Objects jumping when stacked

We've done a Hanoi tower demo before, you can see the parameters here if you're interested.

2018-09-17 11:01:48 -0500 answered a question How to change the center of an object? And why an object is called a link?

Welcome :) This tutorial should be helpful to you: Make a model You can move the center of any entity (links, visuals,

2018-09-13 09:55:16 -0500 commented question ROS Gazebo: Detecting collision with a static object using contact sensor

Strange, the contacts should be generated the same way for static objects. Have you checked that the contact points show

2018-09-13 09:52:11 -0500 commented answer When plugin publishes message, gazebo crashes with "terminate called after throwing an instance of 'gazebo::common::Exception'"

If you catch the exception and print its error string, I suspect it will say Invalid message type. I'm not a fan of exce

2018-09-10 11:03:07 -0500 commented question [POLL] Gazebo init crash frequency

I feel like this would be more suitable for https://community.gazebosim.org/

2018-09-04 11:58:07 -0500 commented question GZClient segfaults after compiling from source

After it crashes, still inside gdb, could you run bt to get a backtrace and add it to your question? Also, just looking

2018-08-31 11:55:16 -0500 commented answer Invalid use of template name 'ignition::math::v5::Box'

Can you run gdb gzclient and add the backtrace to your original question above?

2018-08-31 10:23:35 -0500 answered a question Citysim on Gazebo 9 seems slow

The citysim branch shouldn't make a difference in performance, it only has support for a couple of extra features, like

2018-08-31 08:20:46 -0500 received badge  Nice Answer (source)
2018-08-30 19:22:03 -0500 commented answer Invalid use of template name 'ignition::math::v5::Box'

If you start gzserver --verbose and gzclient --verbose separately, do you see any errors?

2018-08-29 10:48:19 -0500 commented answer Invalid use of template name 'ignition::math::v5::Box'

And then what happens? No GUI shows up?

2018-08-28 19:36:07 -0500 commented answer Invalid use of template name 'ignition::math::v5::Box'

Can you add the output of gazebo --verbose to your question?

2018-08-27 18:12:16 -0500 answered a question Invalid use of template name 'ignition::math::v5::Box'

It looks like you're using ign-math5 (hence v5) instead of ign-math4. I suggest you uninstall all ign-math from your sys

2018-08-27 10:28:56 -0500 commented question How to run citysim in gazebo

The commands you wrote look correct. What's the problem you're having?

2018-08-27 10:15:17 -0500 commented question Gazebo sun does not fully light my object

It may help if you share your model, there could be something in it which is making it gray.

2018-08-24 10:47:32 -0500 answered a question Is it possible to use a VR (virtual reality) headset with Gazebo?

Here's a tutorial on how to use the Oculus Rift: http://gazebosim.org/tutorials?tut=oculus

2018-08-23 17:52:09 -0500 received badge  Nice Answer (source)
2018-08-23 10:44:05 -0500 answered a question How to edit/submit fixes to tutorials?

There's a tutorial on how to edit tutorials ;) Thanks in advance for the contributions! http://gazebosim.org/tutorials?

2018-08-22 14:50:18 -0500 commented question Gazebo7 Installation - Conflicting Gazebo Versions

Could you add the exact error message to your question? I'm not sure where "conflicting gazebo versions" is coming from.

2018-08-21 10:05:54 -0500 commented question How to run citysim in gazebo

What Gazebo version are you using? Also note that CitySim by itself doesn't need ROS.

2018-08-21 10:05:07 -0500 commented question How to run citysim in gazebo

What Gazebo version are you using?

2018-08-14 12:07:55 -0500 answered a question What does multi_step in world_control.proto do?

If you're using a world plugin, OnUpdate is called at every iteration within the physics thread. So I think what's happe

2018-08-13 10:38:36 -0500 commented answer How to edit a pre-existing model in Gazebo

Strange, maybe the menu is leaking out of the screen? You listed the 3 last options, but there are 5 more above those, o

2018-08-07 11:17:37 -0500 commented question Gazebo not updating visual position in gzclient

Is the model selected in the GUI at the moment you send the command? Try making sure the model is not selected and see i

2018-08-06 12:41:58 -0500 commented answer Measure distance between 2 points in GUI?

Which means the core dev team is not working on it, but we could accept it as an external contribution ;)