Nabble - playerstage-users

Re: Playerv unable to subscribe to data from Gazebo

2009-12-09T01:07:27Z

I have the same problem too. If you succeed to solve it, please let me know the solution.
Btw., I'm running Gazebo 0.9.0 and player 2.1.3 on Ubuntu 9.04.

Thanks a lot.

I have the same problem. If you succeed to solve it, please contact me...
I do the same in the opposite situation.
Thanks a lot..

Tucker Hermans wrote:

Hi All,

I tried posting this email to the playerstage-gazebo list, but the moderator
there seems to be quite slow at adding new members. Anyways, here is is:

I am having issues with player communicating to Gazebo. My issue seems to
be the same as that posted by Luigi Freda a few months ago, which there was
no response to in the archives. Namely, I can connect to player through,
for example, playerv. However I am unable to subscribe to anything, when I
attempt to I get the following error message:

playerc error : timed out waiting for server reply to request
player:0:request:3
playerc error : failed to get response
playerv : error in /usr/local/src/player-3.0.0/
utils/playerv/pv_dev_position2d.c
libplayerc error: failed to get response
playerc error : timed out waiting for server reply to request
position2d:0:request:1
playerv : error in
/usr/local/src/player-3.0.0/utils/playerv/pv_dev_position2d.c
libplayerc error: timed out waiting for server reply to request
position2d:0:request:1

I am connected to player. Additionally I can control stage through player.

I was hoping that Luigi's problem was fixed and that someone could tell me
how that got worked out.

System information:
Ubuntu 9.10 x86_64
player-3.0.0
gazebo-0.9.0
ode-0.11.0
ogre-v1-6-4

Attached are my .cfg and .world files.

thanks!
Tucker

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[SPAM]

2009-12-08T09:03:56Z

covington.jpg (11K) Download Attachment

Re: Using a video as a Camera Source In Player

2009-12-07T18:37:29Z

I confirm it also works for me (Player 2.1.2).

Just a note (maybe irrelevant to some in the community): GStreamer is
under an LGPL license.

George

2009/12/7 John Hoare <jhoare@...>:

> Yes that looks like its it. That will work with player 2.1.1 (presumably)
> but I needed to make a few changes to it to make it work with the SVN
> version. (Changing Driver to ThreadedDriver etc)
>
> Also I had to set it to initialize the "buffer" variable to NULL to keep the
> program from segfaulting.
>
> I was planning on sending my changes back to the original author so he could
> update his repository, but I suppose if there's interest I can publish it
> myself.
>
> -John
>
> -----Original Message-----
> From: Paul Osmialowski [mailto:newchief@...]
> Sent: Monday, December 07, 2009 6:44 PM
> To: playerstage-users@...
> Subject: Re: [Playerstage-users] Using a video as a Camera Source In Player
>
> I guess this is it:
> http://segomo.elka.pw.edu.pl/svn/player/trunk/gstreamplayer/driver-2.1.1
>
> On Mon, 7 Dec 2009, Scott Reynolds wrote:
>
>> Sorry I must have missed it. Where is this driver located?
>>
>> On Mon, Dec 7, 2009 at 1:03 AM, Paul Osmialowski
> <newchief@...>wrote:
>>
>>> Hi John,
>>> Nice to hear it works. Why it is not a part of mainstream distribution?:
>>> Sometimes things gets missing. Also AFAIR references to OpenCV in this
>>> driver code looked suspicious so this could be the reason for Player
>>> developers doubts. Nevertheless, this is kinda useful driver (gstreamer
>>> itself has many interesting filters for image processing) so I guess it
>>> will be added to Player trunk in the future.
>>>
>>> Paul
>>>
>>> On Sun, 6 Dec 2009, John Hoare wrote:
>>>
>>>> Thanks Paul this is what I was wanting. Hopefully I can use this.
>>>>
>>>> Is there any reason why this driver wasn't added to the player source?
>>>>
>>>> -John
>>>>
>>>> Paul Osmialowski wrote:
>>>>> Some time ago Piotr Trojanek released gstreamer plugin for Player, it
>>>>> might be helpful for you. Gstreamer infrastructure is capable to take
>>>>> recorded video file as a source for streamed data. I never tried if it
>>>>> works as I needed something oposite (use gstreamer to record data from
>>>>> Player's camera interface into mpeg file) and it worked fine.
>>>>> Paul
>>>>>
>>>>> On Fri, 4 Dec 2009, John Hoare wrote:
>>>>>
>>>>>
>>>>>> Hi,
>>>>>>
>>>>>> Is there any way to take a recorded video, and use it as a source to
>>>>>> emulate a camera interface?
>>>>>> We currently have something in-lab that uses a series of images, and
>>>>>> plays back using the readlog driver, but I was hoping for something
>>> that
>>>>>> would take in an avi file or something.
>>>>>>
>>>>>> Thanks,
>>>>>> John
>>>>>>
>>>>>>
>>>
> ----------------------------------------------------------------------------
> --
>>>>>> Join us December 9, 2009 for the Red Hat Virtual Experience,
>>>>>> a free event focused on virtualization and cloud computing.
>>>>>> Attend in-depth sessions from your desk. Your couch. Anywhere.
>>>>>> http://p.sf.net/sfu/redhat-sfdev2dev
>>>>>> _______________________________________________
>>>>>> Playerstage-users mailing list
>>>>>> Playerstage-users@...
>>>>>> https://lists.sourceforge.net/lists/listinfo/playerstage-users
>>>>>>
>>>>>>
>>>>>
>>>>>
>>>
> ----------------------------------------------------------------------------
> --
>>>>> Join us December 9, 2009 for the Red Hat Virtual Experience,
>>>>> a free event focused on virtualization and cloud computing.
>>>>> Attend in-depth sessions from your desk. Your couch. Anywhere.
>>>>> http://p.sf.net/sfu/redhat-sfdev2dev
>>>>> _______________________________________________
>>>>> Playerstage-users mailing list
>>>>> Playerstage-users@...
>>>>> https://lists.sourceforge.net/lists/listinfo/playerstage-users
>>>>>
>>>>
>>>>
>>>>
>>>
> ----------------------------------------------------------------------------
> --
>>>> Join us December 9, 2009 for the Red Hat Virtual Experience,
>>>> a free event focused on virtualization and cloud computing.
>>>> Attend in-depth sessions from your desk. Your couch. Anywhere.
>>>> http://p.sf.net/sfu/redhat-sfdev2dev
>>>> _______________________________________________
>>>> Playerstage-users mailing list
>>>> Playerstage-users@...
>>>> https://lists.sourceforge.net/lists/listinfo/playerstage-users
>>>>
>>>
>>>
>>>
> ----------------------------------------------------------------------------
> --
>>> Join us December 9, 2009 for the Red Hat Virtual Experience,
>>> a free event focused on virtualization and cloud computing.
>>> Attend in-depth sessions from your desk. Your couch. Anywhere.
>>> http://p.sf.net/sfu/redhat-sfdev2dev
>>> _______________________________________________
>>> Playerstage-users mailing list
>>> Playerstage-users@...
>>> https://lists.sourceforge.net/lists/listinfo/playerstage-users
>>>
>>
>>
>>
>> --
>> Scott Reynolds
>> Cell: 630-254-2474
>> http://www.scottreynolds.us
>>
>
> ----------------------------------------------------------------------------
> --
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> _______________________________________________
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> https://lists.sourceforge.net/lists/listinfo/playerstage-users
>
>
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>

Re: Using a video as a Camera Source In Player

2009-12-07T15:57:39Z

Yes that looks like its it. That will work with player 2.1.1 (presumably)
but I needed to make a few changes to it to make it work with the SVN
version. (Changing Driver to ThreadedDriver etc)

Also I had to set it to initialize the "buffer" variable to NULL to keep the
program from segfaulting.

I was planning on sending my changes back to the original author so he could
update his repository, but I suppose if there's interest I can publish it
myself.

-John

-----Original Message-----
From: Paul Osmialowski [mailto:newchief@...]
Sent: Monday, December 07, 2009 6:44 PM
To: playerstage-users@...
Subject: Re: [Playerstage-users] Using a video as a Camera Source In Player

I guess this is it:
http://segomo.elka.pw.edu.pl/svn/player/trunk/gstreamplayer/driver-2.1.1

On Mon, 7 Dec 2009, Scott Reynolds wrote:

> Sorry I must have missed it. Where is this driver located?
>
> On Mon, Dec 7, 2009 at 1:03 AM, Paul Osmialowski
<newchief@...>wrote:

>
>> Hi John,
>> Nice to hear it works. Why it is not a part of mainstream distribution?:
>> Sometimes things gets missing. Also AFAIR references to OpenCV in this
>> driver code looked suspicious so this could be the reason for Player
>> developers doubts. Nevertheless, this is kinda useful driver (gstreamer
>> itself has many interesting filters for image processing) so I guess it
>> will be added to Player trunk in the future.
>>
>> Paul
>>
>> On Sun, 6 Dec 2009, John Hoare wrote:
>>
>>> Thanks Paul this is what I was wanting. Hopefully I can use this.
>>>
>>> Is there any reason why this driver wasn't added to the player source?
>>>
>>> -John
>>>
>>> Paul Osmialowski wrote:
>>>> Some time ago Piotr Trojanek released gstreamer plugin for Player, it
>>>> might be helpful for you. Gstreamer infrastructure is capable to take
>>>> recorded video file as a source for streamed data. I never tried if it
>>>> works as I needed something oposite (use gstreamer to record data from
>>>> Player's camera interface into mpeg file) and it worked fine.
>>>> Paul
>>>>
>>>> On Fri, 4 Dec 2009, John Hoare wrote:
>>>>
>>>>
>>>>> Hi,
>>>>>
>>>>> Is there any way to take a recorded video, and use it as a source to
>>>>> emulate a camera interface?
>>>>> We currently have something in-lab that uses a series of images, and
>>>>> plays back using the readlog driver, but I was hoping for something
>> that
>>>>> would take in an avi file or something.
>>>>>
>>>>> Thanks,
>>>>> John
>>>>>
>>>>>
>>

----------------------------------------------------------------------------
--

>>>>> Join us December 9, 2009 for the Red Hat Virtual Experience,
>>>>> a free event focused on virtualization and cloud computing.
>>>>> Attend in-depth sessions from your desk. Your couch. Anywhere.
>>>>> http://p.sf.net/sfu/redhat-sfdev2dev
>>>>> _______________________________________________
>>>>> Playerstage-users mailing list
>>>>> Playerstage-users@...
>>>>> https://lists.sourceforge.net/lists/listinfo/playerstage-users
>>>>>
>>>>>
>>>>
>>>>
>>

----------------------------------------------------------------------------
--

>>>> Join us December 9, 2009 for the Red Hat Virtual Experience,
>>>> a free event focused on virtualization and cloud computing.
>>>> Attend in-depth sessions from your desk. Your couch. Anywhere.
>>>> http://p.sf.net/sfu/redhat-sfdev2dev
>>>> _______________________________________________
>>>> Playerstage-users mailing list
>>>> Playerstage-users@...
>>>> https://lists.sourceforge.net/lists/listinfo/playerstage-users
>>>>
>>>
>>>
>>>
>>

----------------------------------------------------------------------------
--

>>> Join us December 9, 2009 for the Red Hat Virtual Experience,
>>> a free event focused on virtualization and cloud computing.
>>> Attend in-depth sessions from your desk. Your couch. Anywhere.
>>> http://p.sf.net/sfu/redhat-sfdev2dev
>>> _______________________________________________
>>> Playerstage-users mailing list
>>> Playerstage-users@...
>>> https://lists.sourceforge.net/lists/listinfo/playerstage-users
>>>
>>
>>
>>

----------------------------------------------------------------------------
--

>> Join us December 9, 2009 for the Red Hat Virtual Experience,
>> a free event focused on virtualization and cloud computing.
>> Attend in-depth sessions from your desk. Your couch. Anywhere.
>> http://p.sf.net/sfu/redhat-sfdev2dev
>> _______________________________________________
>> Playerstage-users mailing list
>> Playerstage-users@...
>> https://lists.sourceforge.net/lists/listinfo/playerstage-users
>>
>
>
>
> --
> Scott Reynolds
> Cell: 630-254-2474
> http://www.scottreynolds.us
>

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Re: Using a video as a Camera Source In Player

2009-12-07T15:43:35Z

I guess this is it:
http://segomo.elka.pw.edu.pl/svn/player/trunk/gstreamplayer/driver-2.1.1

On Mon, 7 Dec 2009, Scott Reynolds wrote:

> Sorry I must have missed it. Where is this driver located?
>
> On Mon, Dec 7, 2009 at 1:03 AM, Paul Osmialowski <newchief@...>wrote:
>
>> Hi John,
>> Nice to hear it works. Why it is not a part of mainstream distribution?:
>> Sometimes things gets missing. Also AFAIR references to OpenCV in this
>> driver code looked suspicious so this could be the reason for Player
>> developers doubts. Nevertheless, this is kinda useful driver (gstreamer
>> itself has many interesting filters for image processing) so I guess it
>> will be added to Player trunk in the future.
>>
>> Paul
>>
>> On Sun, 6 Dec 2009, John Hoare wrote:
>>
>>> Thanks Paul this is what I was wanting. Hopefully I can use this.
>>>
>>> Is there any reason why this driver wasn't added to the player source?
>>>
>>> -John
>>>
>>> Paul Osmialowski wrote:
>>>> Some time ago Piotr Trojanek released gstreamer plugin for Player, it
>>>> might be helpful for you. Gstreamer infrastructure is capable to take
>>>> recorded video file as a source for streamed data. I never tried if it
>>>> works as I needed something oposite (use gstreamer to record data from
>>>> Player's camera interface into mpeg file) and it worked fine.
>>>> Paul
>>>>
>>>> On Fri, 4 Dec 2009, John Hoare wrote:
>>>>
>>>>
>>>>> Hi,
>>>>>
>>>>> Is there any way to take a recorded video, and use it as a source to
>>>>> emulate a camera interface?
>>>>> We currently have something in-lab that uses a series of images, and
>>>>> plays back using the readlog driver, but I was hoping for something
>> that
>>>>> would take in an avi file or something.
>>>>>
>>>>> Thanks,
>>>>> John
>>>>>
>>>>>
>> ------------------------------------------------------------------------------
>>>>> Join us December 9, 2009 for the Red Hat Virtual Experience,
>>>>> a free event focused on virtualization and cloud computing.
>>>>> Attend in-depth sessions from your desk. Your couch. Anywhere.
>>>>> http://p.sf.net/sfu/redhat-sfdev2dev
>>>>> _______________________________________________
>>>>> Playerstage-users mailing list
>>>>> Playerstage-users@...
>>>>> https://lists.sourceforge.net/lists/listinfo/playerstage-users
>>>>>
>>>>>
>>>>
>>>>
>> ------------------------------------------------------------------------------
>>>> Join us December 9, 2009 for the Red Hat Virtual Experience,
>>>> a free event focused on virtualization and cloud computing.
>>>> Attend in-depth sessions from your desk. Your couch. Anywhere.
>>>> http://p.sf.net/sfu/redhat-sfdev2dev
>>>> _______________________________________________
>>>> Playerstage-users mailing list
>>>> Playerstage-users@...
>>>> https://lists.sourceforge.net/lists/listinfo/playerstage-users
>>>>
>>>
>>>
>>>
>> ------------------------------------------------------------------------------
>>> Join us December 9, 2009 for the Red Hat Virtual Experience,
>>> a free event focused on virtualization and cloud computing.
>>> Attend in-depth sessions from your desk. Your couch. Anywhere.
>>> http://p.sf.net/sfu/redhat-sfdev2dev
>>> _______________________________________________
>>> Playerstage-users mailing list
>>> Playerstage-users@...
>>> https://lists.sourceforge.net/lists/listinfo/playerstage-users
>>>
>>
>>
>> ------------------------------------------------------------------------------
>> Join us December 9, 2009 for the Red Hat Virtual Experience,
>> a free event focused on virtualization and cloud computing.
>> Attend in-depth sessions from your desk. Your couch. Anywhere.
>> http://p.sf.net/sfu/redhat-sfdev2dev
>> _______________________________________________
>> Playerstage-users mailing list
>> Playerstage-users@...
>> https://lists.sourceforge.net/lists/listinfo/playerstage-users
>>
>
>
>
> --
> Scott Reynolds
> Cell: 630-254-2474
> http://www.scottreynolds.us
>

Re: Using a video as a Camera Source In Player

2009-12-07T12:59:04Z

Sorry I must have missed it. Where is this driver located?

On Mon, Dec 7, 2009 at 1:03 AM, Paul Osmialowski <newchief@...> wrote:

Hi John,
Nice to hear it works. Why it is not a part of mainstream distribution?:
Sometimes things gets missing. Also AFAIR references to OpenCV in this
driver code looked suspicious so this could be the reason for Player
developers doubts. Nevertheless, this is kinda useful driver (gstreamer
itself has many interesting filters for image processing) so I guess it
will be added to Player trunk in the future.

Paul

On Sun, 6 Dec 2009, John Hoare wrote:

> Thanks Paul this is what I was wanting. Hopefully I can use this.
>
> Is there any reason why this driver wasn't added to the player source?
>
> -John
>
> Paul Osmialowski wrote:
>> Some time ago Piotr Trojanek released gstreamer plugin for Player, it
>> might be helpful for you. Gstreamer infrastructure is capable to take
>> recorded video file as a source for streamed data. I never tried if it
>> works as I needed something oposite (use gstreamer to record data from
>> Player's camera interface into mpeg file) and it worked fine.
>> Paul
>>
>> On Fri, 4 Dec 2009, John Hoare wrote:
>>
>>
>>> Hi,
>>>
>>> Is there any way to take a recorded video, and use it as a source to
>>> emulate a camera interface?
>>> We currently have something in-lab that uses a series of images, and
>>> plays back using the readlog driver, but I was hoping for something that
>>> would take in an avi file or something.
>>>
>>> Thanks,
>>> John
>>>
>>> ------------------------------------------------------------------------------
>>> Join us December 9, 2009 for the Red Hat Virtual Experience,
>>> a free event focused on virtualization and cloud computing.
>>> Attend in-depth sessions from your desk. Your couch. Anywhere.
>>> http://p.sf.net/sfu/redhat-sfdev2dev
>>> _______________________________________________
>>> Playerstage-users mailing list
>>> Playerstage-users@...
>>> https://lists.sourceforge.net/lists/listinfo/playerstage-users
>>>
>>>
>>
>> ------------------------------------------------------------------------------
>> Join us December 9, 2009 for the Red Hat Virtual Experience,
>> a free event focused on virtualization and cloud computing.
>> Attend in-depth sessions from your desk. Your couch. Anywhere.
>> http://p.sf.net/sfu/redhat-sfdev2dev
>> _______________________________________________
>> Playerstage-users mailing list
>> Playerstage-users@...
>> https://lists.sourceforge.net/lists/listinfo/playerstage-users
>>
>
>
> ------------------------------------------------------------------------------
> Join us December 9, 2009 for the Red Hat Virtual Experience,
> a free event focused on virtualization and cloud computing.
> Attend in-depth sessions from your desk. Your couch. Anywhere.
> http://p.sf.net/sfu/redhat-sfdev2dev
> _______________________________________________
> Playerstage-users mailing list
> Playerstage-users@...
> https://lists.sourceforge.net/lists/listinfo/playerstage-users
>

------------------------------------------------------------------------------
Join us December 9, 2009 for the Red Hat Virtual Experience,
a free event focused on virtualization and cloud computing.
Attend in-depth sessions from your desk. Your couch. Anywhere.
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_______________________________________________
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--
Scott Reynolds
Cell: 630-254-2474
http://www.scottreynolds.us

------------------------------------------------------------------------------
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wireless communication in player.... help needed.

2009-12-07T10:29:13Z

Hello all,

I would like to establish a wireless communication between
a client (robot with a laptop) and a remote desktop. I would like to
use this setup such that the data sent by the client is processed on
the desktop. I am using player drivers to control the robot and the on
board sensors. So i would like to know if there is any possibility to
send the sensor data from the robot+laptop setup to the desktop using
player supported interfaces. If anyone has a prior experience in doing
this, i would really appreciate your inputs.

My laptop is running Fedora core -7 and player 3.0.0.

Thanks in advance,
Guru.

--
-Prasad

------------------------------------------------------------------------------
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[SPAM] http://playerstage.sourceforge.net - Contact needed

2009-12-07T05:40:44Z

I am Dr. Marc Schneider and I work for Multilingual Search Engine Optimization Inc. in Washington DC ( Tel: 1 202-250-3645) - I would like to speak with the person in charge of your international clientele. Who is my contact? Who should I speak to??

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Marcs@...

Multilingual Search Engine Optimization Inc.
1250 Connecticut Ave N.W. Suite 200
Washington, DC 20036 USA
TEL: +1 (202) 250-3645 - FAX: 1 (202)-318-2453
http://www.mplw.net
Multilingual Search Engine Promotion Services since 1999.

------------------------------------------------------------------------------
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Stage Build problems

2009-12-07T04:22:56Z

Hello,

I'm having a build problem (linking) Stage 3.2.2. I'm trying to
statically link FLTK (set with ccmake). I'm using gcc 4.2.4 on Ubuntu
4.2.4-1ubuntu4, Linux 2.6.24-16-rtai #1 Tue Sep 30 22:54:33 EEST 2008
i686 GNU/Linux. Here's the last part of the link output:

[ 59%] Building CXX object libstage/CMakeFiles/stage.dir/ancestor.o
Linking CXX shared library libstage.so
/usr/bin/ld: cannot find -ljpeg
collect2: ld returned 1 exit status
make[2]: *** [libstage/libstage.so.3.2.2] Error 1
make[1]: *** [libstage/CMakeFiles/stage.dir/all] Error 2
make: *** [all] Error 2

I've been trying to build Stage for awhile without any luck. I've read
the FAQ list and mailing list, but can't seem to find a solution to
this problem. I'd really appreciate some help, thanks!!

-Rich

------------------------------------------------------------------------------
Join us December 9, 2009 for the Red Hat Virtual Experience,
a free event focused on virtualization and cloud computing.
Attend in-depth sessions from your desk. Your couch. Anywhere.
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Re: Using a video as a Camera Source In Player

2009-12-07T01:03:51Z

Hi John,
Nice to hear it works. Why it is not a part of mainstream distribution?:
Sometimes things gets missing. Also AFAIR references to OpenCV in this
driver code looked suspicious so this could be the reason for Player
developers doubts. Nevertheless, this is kinda useful driver (gstreamer
itself has many interesting filters for image processing) so I guess it
will be added to Player trunk in the future.

Paul

On Sun, 6 Dec 2009, John Hoare wrote:

> Thanks Paul this is what I was wanting. Hopefully I can use this.
>
> Is there any reason why this driver wasn't added to the player source?
>
> -John
>
> Paul Osmialowski wrote:
>> Some time ago Piotr Trojanek released gstreamer plugin for Player, it
>> might be helpful for you. Gstreamer infrastructure is capable to take
>> recorded video file as a source for streamed data. I never tried if it
>> works as I needed something oposite (use gstreamer to record data from
>> Player's camera interface into mpeg file) and it worked fine.
>> Paul
>>
>> On Fri, 4 Dec 2009, John Hoare wrote:
>>
>>
>>> Hi,
>>>
>>> Is there any way to take a recorded video, and use it as a source to
>>> emulate a camera interface?
>>> We currently have something in-lab that uses a series of images, and
>>> plays back using the readlog driver, but I was hoping for something that
>>> would take in an avi file or something.
>>>
>>> Thanks,
>>> John
>>>
>>> ------------------------------------------------------------------------------
>>> Join us December 9, 2009 for the Red Hat Virtual Experience,
>>> a free event focused on virtualization and cloud computing.
>>> Attend in-depth sessions from your desk. Your couch. Anywhere.
>>> http://p.sf.net/sfu/redhat-sfdev2dev
>>> _______________________________________________
>>> Playerstage-users mailing list
>>> Playerstage-users@...
>>> https://lists.sourceforge.net/lists/listinfo/playerstage-users
>>>
>>>
>>
>> ------------------------------------------------------------------------------
>> Join us December 9, 2009 for the Red Hat Virtual Experience,
>> a free event focused on virtualization and cloud computing.
>> Attend in-depth sessions from your desk. Your couch. Anywhere.
>> http://p.sf.net/sfu/redhat-sfdev2dev
>> _______________________________________________
>> Playerstage-users mailing list
>> Playerstage-users@...
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>>
>
>
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Re: Using a video as a Camera Source In Player

2009-12-06T15:06:15Z

Thanks Paul this is what I was wanting. Hopefully I can use this.

Is there any reason why this driver wasn't added to the player source?

-John

Paul Osmialowski wrote:

> Some time ago Piotr Trojanek released gstreamer plugin for Player, it
> might be helpful for you. Gstreamer infrastructure is capable to take
> recorded video file as a source for streamed data. I never tried if it
> works as I needed something oposite (use gstreamer to record data from
> Player's camera interface into mpeg file) and it worked fine.
> Paul
>
> On Fri, 4 Dec 2009, John Hoare wrote:
>
>
>> Hi,
>>
>> Is there any way to take a recorded video, and use it as a source to
>> emulate a camera interface?
>> We currently have something in-lab that uses a series of images, and
>> plays back using the readlog driver, but I was hoping for something that
>> would take in an avi file or something.
>>
>> Thanks,
>> John
>>
>> ------------------------------------------------------------------------------
>> Join us December 9, 2009 for the Red Hat Virtual Experience,
>> a free event focused on virtualization and cloud computing.
>> Attend in-depth sessions from your desk. Your couch. Anywhere.
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>> Playerstage-users mailing list
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>> https://lists.sourceforge.net/lists/listinfo/playerstage-users
>>
>>
>
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[SPAM] r. Our forem

2009-12-06T09:07:28Z

And it's hard, hard times. And there's the old bachelor, all hated with
scorn, He's like an old garment all tattered and torn, The girls and the
widows all toss him a sigh, And think it quite right, and so do I,-- And
it's hard, hard times. And there's the young widow, coquettish and shy,
With a smile on her lips and a tear in her eye, But when she gets
married she'll cut quite a dash, She'll give him the reins and she'll
handle the cash,-- And it's hard, hard times. And there's the young lady
I like to have missed, And I believe to my soul she'd like to be kissed;
She'll tell you she loves you with all pretence And ask you to call
again some time hence,-- And it's hard, hard times. And there's the
young man, the worst of the whole. Oh, he will tell you with all of his
soul, He'll tell you he loves you and for you will die, And when he's
away he will swear it's a lie,-- And it's hard, hard times. COLE YOUNGER
Am one of a band of highwaymen, Cole Younger is my name; My crimes and
depredations have brought my friends to shame; The robbing of the
Northfield Bank, the same I can't deny, For now I am a prisoner, in the
Stillwater jail I lie. 'Tis of a bold, high robbery, a story to you I'll
tell, Of a California miner who unto us befell; We robbed him of his
money and bid him go his way, For which I will be sorry until my dying
day. And then we started homeward, when brother Bob did say: "Now, Cole,
we will buy fast horses and on them ride away. We will ride to avenge
our father's death and try to win the prize; We will fi

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Re: About Adding A Communication Modle In Stage

2009-12-05T23:51:53Z

Hello everyone:
now ,i find a problem about the wifi model in stage ,i can't user wifi proxy about player .i want to use wifi to communicate with each other,such as tell others what to do and also tell each other their own information in the communication area.i am not sure these functions can reallize ,can you give me some advice?
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Re: error: libplayerc/playerc.h: No such file or directory

2009-12-05T20:05:35Z

Can you post the full output? It's hard to see what it can't find from
just the error message.

Geoff

Allen S wrote:

> Thanks Geoff.
>
> I tried following README and configuring the Player but ran into another
> error.
>
> *****ERROR MESSAGE*****
> CMake Error at /opt/local/share/cmake-2.6/Modules/FindPkgConfig.cmake:270
> (message):
> A required package was not found
> Call Stack (most recent call first):
> /opt/local/share/cmake-2.6/Modules/FindPkgConfig.cmake:322
> (_pkg_check_modules_internal)
> /usr/local/share/cmake/Modules/UsePlayerC.cmake:20 (pkg_check_modules)
> CMakeLists.txt:6 (INCLUDE)
> ***** END *****
>
> Any advise?
>
> Thanks!
>
>
> Geoff Biggs wrote:
>> The error is actually caused by the compiler being unable to find the
>> include file. It does't even get to the point of looking for libraries.
>>
>> Since you're using Player 3, I recommend you use the CMake modules that
>> are installed with Player. Look in the installed examples directories.
>> Each of them has a file called CMakeLists.txt which shows how to use the
>> modules. The README file in each directory explains how to compile using
>> them.
>>
>> Geoff
>>
>> Allen S wrote:
>>> I'm a new user of PlayerStage, I successfully installed Player 3.0.0 and
>>> Stage 3.2.2 on Snow Leopard (10.6).
>>>
>>> I'm able to execute the examples in Player & Stage but unable to compile
>>> a
>>> program of my own. I get the following error. I know this is due to
>>> library not being linked but I cannot figure out how to do it. Please
>>> help
>>>
>>> test.c:3:32: error: libplayerc/playerc.h: No such file or directory
>>> test.c: In function ‘main’:
>>> test.c:9: error: ‘playerc_client_t’ undeclared (first use in this
>>> function)
>>> test.c:9: error: (Each undeclared identifier is reported only once
>>> test.c:9: error: for each function it appears in.)
>>> test.c:9: error: ‘client’ undeclared (first use in this function)
>>> test.c:10: error: ‘playerc_position2d_t’ undeclared (first use in this
>>> function)
>>> test.c:10: error: ‘position2d’ undeclared (first use in this function)
>>> test.c:19: error: ‘PLAYER_OPEN_MODE’ undeclared (first use in this
>>> function)
>>> test.c:21: warning: format ‘%s’ expects type ‘char *’, but argument 3 has
>>> type ‘int’
>>>
>>>
>>> I have tried export path..., export cpath..., export
>>> DYLIB_LIBRARY_PATH...,
>>> etc and nothing has worked so far. Any guidance is greatly appreciated.
>>>
>>> Thanks!
>> ------------------------------------------------------------------------------
>> Let Crystal Reports handle the reporting - Free Crystal Reports 2008
>> 30-Day
>> trial. Simplify your report design, integration and deployment - and focus
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>>
>>
>

[SPAM] t of life is that they

2009-12-05T18:10:19Z

companion of Zeus himself, was chained to a rock on Mount Caucasus by
the vindictive deity. There, on a dizzy height, his body thrust against
the sun-baked rock, Prometheus had to endure the torment of having a
foul-beaked vulture tear out his liver, as though he were a piece of
carrion lying on the mountain side. All day, while the sun mercilessly
smote him and the blue sky turned from red to black before his
pain-racked eyes, the torture went on. Each night, when the filthy bird
of prey that worked the will of the gods spread its dark wings and flew
back to its eyrie, the Titan endured the cruel mercy of having his body
grow whole once more. But with daybreak there came again the silent
shadow, the smell of the unclean thing, and again with fierce beak and
talons the vulture greedily began its work. Thirty thousand years was
the time of his sentence, and yet Prometheus knew that at any moment he
could have brought his torment to an end. A secret was his--a mighty
secret, the revelation of which would have brought him the mercy of Zeus
and have reinstated him in the favour of the all-powerful god. Yet did
he prefer to endure his agonies rather than to free himself by bowing to
t

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Re: error: libplayerc/playerc.h: No such file or directory

2009-12-05T13:32:40Z

Thanks Geoff.

I tried following README and configuring the Player but ran into another error.

*****ERROR MESSAGE*****
CMake Error at /opt/local/share/cmake-2.6/Modules/FindPkgConfig.cmake:270
(message):
A required package was not found
Call Stack (most recent call first):
/opt/local/share/cmake-2.6/Modules/FindPkgConfig.cmake:322
(_pkg_check_modules_internal)
/usr/local/share/cmake/Modules/UsePlayerC.cmake:20 (pkg_check_modules)
CMakeLists.txt:6 (INCLUDE)
***** END *****

Any advise?

Thanks!

Geoff Biggs wrote:

The error is actually caused by the compiler being unable to find the
include file. It does't even get to the point of looking for libraries.

Since you're using Player 3, I recommend you use the CMake modules that
are installed with Player. Look in the installed examples directories.
Each of them has a file called CMakeLists.txt which shows how to use the
modules. The README file in each directory explains how to compile using
them.

Geoff

Allen S wrote:
> I'm a new user of PlayerStage, I successfully installed Player 3.0.0 and
> Stage 3.2.2 on Snow Leopard (10.6).
>
> I'm able to execute the examples in Player & Stage but unable to compile a
> program of my own. I get the following error. I know this is due to
> library not being linked but I cannot figure out how to do it. Please help
>
> test.c:3:32: error: libplayerc/playerc.h: No such file or directory
> test.c: In function ‘main’:
> test.c:9: error: ‘playerc_client_t’ undeclared (first use in this function)
> test.c:9: error: (Each undeclared identifier is reported only once
> test.c:9: error: for each function it appears in.)
> test.c:9: error: ‘client’ undeclared (first use in this function)
> test.c:10: error: ‘playerc_position2d_t’ undeclared (first use in this
> function)
> test.c:10: error: ‘position2d’ undeclared (first use in this function)
> test.c:19: error: ‘PLAYER_OPEN_MODE’ undeclared (first use in this function)
> test.c:21: warning: format ‘%s’ expects type ‘char *’, but argument 3 has
> type ‘int’
>
>
> I have tried export path..., export cpath..., export DYLIB_LIBRARY_PATH...,
> etc and nothing has worked so far. Any guidance is greatly appreciated.
>
> Thanks!

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Re: Using a video as a Camera Source In Player

2009-12-05T04:44:42Z

Some time ago Piotr Trojanek released gstreamer plugin for Player, it
might be helpful for you. Gstreamer infrastructure is capable to take
recorded video file as a source for streamed data. I never tried if it
works as I needed something oposite (use gstreamer to record data from
Player's camera interface into mpeg file) and it worked fine.
Paul

On Fri, 4 Dec 2009, John Hoare wrote:

> Hi,
>
> Is there any way to take a recorded video, and use it as a source to
> emulate a camera interface?
> We currently have something in-lab that uses a series of images, and
> plays back using the readlog driver, but I was hoping for something that
> would take in an avi file or something.
>
> Thanks,
> John
>
> ------------------------------------------------------------------------------
> Join us December 9, 2009 for the Red Hat Virtual Experience,
> a free event focused on virtualization and cloud computing.
> Attend in-depth sessions from your desk. Your couch. Anywhere.
> http://p.sf.net/sfu/redhat-sfdev2dev
> _______________________________________________
> Playerstage-users mailing list
> Playerstage-users@...
> https://lists.sourceforge.net/lists/listinfo/playerstage-users
>

Using a video as a Camera Source In Player

2009-12-04T14:37:50Z

Hi,

Is there any way to take a recorded video, and use it as a source to
emulate a camera interface?
We currently have something in-lab that uses a series of images, and
plays back using the readlog driver, but I was hoping for something that
would take in an avi file or something.

Thanks,
John

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Re: "Stage" program: a standalone robot simulation program

2009-12-04T08:43:15Z

On Fri, Dec 4, 2009 at 4:04 AM, Sahit Erdis <sahit.erdis@...> wrote:
> Hi Richard,
>
> I would be really thankful if you could answer my question. If there is no
> documentation about the use of Stage as a stand alone simulator so please
> only tell me. In that case I can stop searching.

There is a little bit of information in the regular manual, where the
"ctrl" worldfile property is explained on the model manual page. Apart
from that, there are example controllers in <stage src>/examples/ctrl.
This has been enough to get many people started. There is also an
example minimal controller in my paper "massively multiple robots in
Stage".

Richard/

> /Sahit
>
> 2009/11/28 Richard Vaughan <rtvaughan@...>
>>
>> worlds/simple.world
>>
>> is an example with a controller. See the line:
>>
>> ctrl "wander"
>>
>> in the robot definition. This loads the file wander.so which must be
>> somewhere in your LD_LIBRARY_PATH (or DYLD_LIBRARY_PATH in OS X).
>> wander.so is installed in $(CMAKE_INSTALL_PREFIX)/lib.
>>
>> Also, see the fine manual.
>>
>> Richard/
>>
>>
>> On Sat, Nov 28, 2009 at 10:10 AM, Sahit Erdis <sahit.erdis@...>
>> wrote:
>> > Hi Community,
>> >
>> > I wonder how Stage is used as a stand alone simulator. I have read in
>> > the
>> > forum:
>> >
>> > "Just use the Stage binary, with a controller loaded from your world
>> > file.
>> > See worlds/simple.world and worlds/fasr.world for examples. "
>> >
>> > But what I do not understand here is from where does my control program
>> > is
>> > loaded.
>> >
>> > If we assume for example here that I run "stage simple.world" or "stage
>> > fasr.world". Where in the world file is the control program set? I
>> > assume
>> > this control program is something I as a programmer have written. But at
>> > least in case of this two examples it should be something in the
>> > libraries.
>> > Is it a binary which is loaded from somewhere? If so I can't find it. I
>> > could not find any example in the manual as well. So could someone give
>> > me
>> > an introduction please.
>> >
>> > /Sahit Erdis
>> >
>> >
>> > ------------------------------------------------------------------------------
>> > Let Crystal Reports handle the reporting - Free Crystal Reports 2008
>> > 30-Day
>> > trial. Simplify your report design, integration and deployment - and
>> > focus
>> > on
>> > what you do best, core application coding. Discover what's new with
>> > Crystal Reports now. http://p.sf.net/sfu/bobj-july
>> > _______________________________________________
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>> > Playerstage-users@...
>> > https://lists.sourceforge.net/lists/listinfo/playerstage-users
>> >
>> >
>>
>>
>>
>> --
>> Richard Vaughan
>> Autonomy Lab / Computing Science / Simon Fraser University
>>
>>
>> ------------------------------------------------------------------------------
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>> 30-Day
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>> on
>> what you do best, core application coding. Discover what's new with
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>> Playerstage-users@...
>> https://lists.sourceforge.net/lists/listinfo/playerstage-users
>
>
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>

--
Richard Vaughan
Autonomy Lab / Computing Science / Simon Fraser University

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Re: "Stage" program: a standalone robot simulation program

2009-12-04T04:04:15Z

Hi Richard,

I would be really thankful if you could answer my question. If there is no documentation about the use of Stage as a stand alone simulator so please only tell me. In that case I can stop searching.

/Sahit

2009/11/28 Richard Vaughan <rtvaughan@...>

worlds/simple.world

is an example with a controller. See the line:

ctrl "wander"

in the robot definition. This loads the file wander.so which must be
somewhere in your LD_LIBRARY_PATH (or DYLD_LIBRARY_PATH in OS X).
wander.so is installed in $(CMAKE_INSTALL_PREFIX)/lib.

Also, see the fine manual.

Richard/

On Sat, Nov 28, 2009 at 10:10 AM, Sahit Erdis <sahit.erdis@...> wrote:
> Hi Community,
>
> I wonder how Stage is used as a stand alone simulator. I have read in the
> forum:
>
> "Just use the Stage binary, with a controller loaded from your world file.
> See worlds/simple.world and worlds/fasr.world for examples. "
>
> But what I do not understand here is from where does my control program is
> loaded.
>
> If we assume for example here that I run "stage simple.world" or "stage
> fasr.world". Where in the world file is the control program set? I assume
> this control program is something I as a programmer have written. But at
> least in case of this two examples it should be something in the libraries.
> Is it a binary which is loaded from somewhere? If so I can't find it. I
> could not find any example in the manual as well. So could someone give me
> an introduction please.
>
> /Sahit Erdis
>

> ------------------------------------------------------------------------------
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> trial. Simplify your report design, integration and deployment - and focus
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--
Richard Vaughan
Autonomy Lab / Computing Science / Simon Fraser University

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Time between Player and Stage

2009-12-04T02:51:49Z

Hey everyone

I have a working extended kalman filter running in PlayerStage and made a few tests, but I noticed a huge difference in the expected execution time for the program and the one I measured with a stopwatch based on the robots movement in Stage. My program structure is:

begin = clock();

int count = 500;
while(count--)
{
...........
Kalman filter
...........
}

end = clock();
cout << (double)(end-time_count)/CLOCKS_PER_SEC << endl;

The program return an execution time on 1.42 seconds, but my stopwatch tells me that the robot have been moving in Stage for 1min and 23 seconds.
Have I missed something or is there some hidden relationship between Player and Stage regarding time? Seems like an awful big difference to me.

Regards

Sebastian Aslund

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Re: Laser proxy!

2009-12-03T11:00:17Z

Hello Irtiza,

If I understood your doubt correctly, you want to know the number of scan readings a laser proxy is returning. To do so, you can call the function GetCount(), which is a member function of LaserProxy and returns the number of points in the scan.

Murilo

2009/12/1 Irtiza Ali <irtiza_ali01@...>

Hello all,

I want to ask, if anyone knows about the possibility to find out that which number of scan is receiving through player laser proxy.

Kind regards and wishes,
Irtiza Ali

PhD Candidate,
GET Lab, University of Paderborn
Germany

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how to run "amcl" in player-stage

2009-12-03T06:39:54Z

Hi everybody!

I just installed player v 3.0.0 with stage 3.2.2 and wanted to try "amcl". Could somebody please guide me step by step what to specify in .world and .cfg files and how and with which parameters to start player and stage. The examples I found in Internet do not lead me to any success. I need pure simulation.

regards,
Slava
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Re: Wifi model in player/stage

2009-12-02T15:58:05Z

On 2009-12-02, at 1:17 AM, blueskydyliu wrote:

>
> hello sir,
> So sorry to trouble you,I'm a student in shanghai jiaotong university in
> shanghai,china,these days I am studying player/stage,here I have a trouble
> about the wifi model, the wifi model can run when I use command "stage
> wifi.world" in the file worlds, but when I use command "player wifi.cfg" ,it
> show some errors,the errors are follow :
>
> Stage plugin: 6665.position2d.0 is "r0"
> Stage plugin: 6665.wifi.0 is err: error: stage driver doesn't support
> interface type 23
> (/home/blueskydyliu/player/wifistg/libstageplugin/p_driver.cc StgDriver)
> error : Initialization failed for driver "stage"
> error : failed to parse config file wifi.cfg driver blocks
>
> so I open the p_drever.cc file ,and change the sentences
> # case PLAYER_WIFI_CODE:
> # ifsrc = new InterfaceWifi( player_addr, this, cf, section );
> # break;
> to
> case PLAYER_WIFI_CODE:
> ifsrc = new InterfaceWifi( player_addr, this, cf, section );
> break;
>
> but it still does not works..,the problem trouble me some days....I really
> need you help me know how to make it work in player .
> best wishes.
>
> my Stage is 3.2.2.my player is 3.0.0.
>

Uncommenting this case statement is not all there is to it.

At a very minimum you will need to change the file stage/libstageplugin/p_wifi.cc to do a proper translation between the Wifi model settings that I've defined, and the player_wifi_data_t structure in player ( found in player/libplayerinterface/interfaces/023_wifi.def ).
>From there you're going to need to look at whether or not you need to make subsequent changes to player to actually use this wifi data in some meaningful manner.
I suspect that doing all this will only get you basic link information so you can determine who is in radio range of your robots. If you want to actually allow message passing between simulated robots, you'll need to add support for that in player.

This is just my assessment from a quick look at the code. I'm not using Player at all in my current work, so I have only completed the necessary work to get the wifi working in Stage.

Hope this helps,
Tyler Gunn
University of Manitoba

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Re: Accessing bumper.bumpers from Python

2009-12-02T15:34:47Z

Dear Kevin,

have you tried Python interface to C++ library? I am not Python/Swig expert, but in my opinion
it is easier to code in object oriented way.

Best regards,

On Wed, Dec 2, 2009 at 22:10, Kevin S. Pratt <kpratt@...> wrote:

Hi all--

I'm trying to access the array of values for bumper.bumpers through the Python libplayerc_py client interface.

My first inclination was to just treat it like a normal array (ie bumper.bumpers[0] ) but this generates a type error: "TypeError: 'PySwigObject' object is unsubscriptable". Looking at the Swig documentation this makes sense as it treats pointers as opaque.

What then is the preferred method for accessing array items in the various interfaces (such as bumper.bumpers or ir.data.ranges for example)?

In the libplayerc_py example it accesses laser.ranges by subscripting, which is what I would expect. On inspecting playerc_wrap.i however, in the playerc_laser typedef it has 'doubleArray ranges;' whereas the playerc_bumper typedef has 'uint8_t *bumpers;'. Is there a reason bumper.bumpers is not written with the related intArray type, rather than as a pointer? Or what am I missing to access bumper.bumpers?

Thanks--
--Kevin

Setup details: Player 3.0.0-rc3, Python 2.6 on Eeebuntu with kernel 2.6.30
--
********************************************************
Kevin Pratt
Center for Robot-Assisted Search and Rescue
Texas A&M University

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--
Piotr Trojanek
Robot Control and Recognition Systems Team,
Institute of Control & Computation Engineering ,
Warsaw University of Technology

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Accessing bumper.bumpers from Python

2009-12-02T13:10:07Z

Hi all--

I'm trying to access the array of values for bumper.bumpers through the Python libplayerc_py client interface.

My first inclination was to just treat it like a normal array (ie bumper.bumpers[0] ) but this generates a type error: "TypeError: 'PySwigObject' object is unsubscriptable". Looking at the Swig documentation this makes sense as it treats pointers as opaque.

What then is the preferred method for accessing array items in the various interfaces (such as bumper.bumpers or ir.data.ranges for example)?

In the libplayerc_py example it accesses laser.ranges by subscripting, which is what I would expect. On inspecting playerc_wrap.i however, in the playerc_laser typedef it has 'doubleArray ranges;' whereas the playerc_bumper typedef has 'uint8_t *bumpers;'. Is there a reason bumper.bumpers is not written with the related intArray type, rather than as a pointer? Or what am I missing to access bumper.bumpers?

Thanks--
--Kevin

Setup details: Player 3.0.0-rc3, Python 2.6 on Eeebuntu with kernel 2.6.30
--
********************************************************
Kevin Pratt
Center for Robot-Assisted Search and Rescue
Texas A&M University

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Re: Wifi model in player/stage

2009-12-01T23:17:38Z

hello sir,
So sorry to trouble you,I'm a student in shanghai jiaotong university in shanghai,china,these days I am studying player/stage,here I have a trouble about the wifi model, the wifi model can run when I use command "stage wifi.world" in the file worlds, but when I use command "player wifi.cfg" ,it show some errors,the errors are follow :

Stage plugin: 6665.position2d.0 is "r0"
Stage plugin: 6665.wifi.0 is err: error: stage driver doesn't support interface type 23
(/home/blueskydyliu/player/wifistg/libstageplugin/p_driver.cc StgDriver)
error : Initialization failed for driver "stage"
error : failed to parse config file wifi.cfg driver blocks

so I open the p_drever.cc file ,and change the sentences
# case PLAYER_WIFI_CODE:
# ifsrc = new InterfaceWifi( player_addr, this, cf, section );
# break;
to
case PLAYER_WIFI_CODE:
ifsrc = new InterfaceWifi( player_addr, this, cf, section );
break;

but it still does not works..,the problem trouble me some days....I really need you help me know how to make it work in player .
best wishes.

my Stage is 3.2.2.my player is 3.0.0.

Michael Sebastian Schröder wrote:

Hello everyone,

I have some questions about the wifi- model in player/stage and since
the documentation concerning this is not at all exhaustive I hope you
guys can give me some hints. First of, I saw there is a WiFiProxy class
in playertc++.h. How do I equip my robot, which later will be simulated
in Stage with a wifi-device? What do I have to configure?

Is some kind of wifi-simulation implemented in stage? What kind of Radio
propagation model is used?

I hope you can help me with this.

Best regards

Michael

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Re: Rflex Driver Slows down when commanded to Move

2009-12-01T14:45:29Z

Yes I did write a new driver that is suppose to track a path.

The data rate comes back to 10Hz once the robot stops moving. To stop the robot, I issue a "zero" velocity command then stop sending anymore commands. I guess I need to test if the data rate still drops if I keep sending a "zero" velocity command.

I did not have to worry about these things with ver 1.6.5 and I never even looked at the rflex code before. I will need to spend some time figuring out what is going wrong. It is possible that the hardware became faulty.

Thanks for your help.

Geoff Biggs wrote:

Unless you are writing a driver, you should use the client library
functions to send and receive data now, rather than sending the messages
directly yourself.

The data rate may be slowing if the robot's controller is too busy
moving the robot to send data back as fast. Does the data rate increase
once the robot completes its move?

Geoff

Giri_Nathan wrote:
> Player version:2.1.1
> Robot:ATRV-JR
>
> I am using the RFLEX driver to control the robot. Basically, my control
> driver, subscribes to the position2D interface of the RFLEX driver.
> I send motion commands to the robot like this:
> robot_dev->PutMsg(InQueue, PLAYER_MSGTYPE_CMD, PLAYER_POSITION2D_CMD_VEL,
> &vel_command, sizeof(vel_command), NULL);
>
> In player 1.6.5, I used to send the commands this way:
> PutCommand(this->velocity_position_id,
>
> (unsigned
> char*)&cmd,sizeof(cmd),×tamp);
>
> I am also logging the position2d using the writelog driver. I noticed that
> when I am not issuing any commands to the robot, the data is logged at 10
> HZ. As soon as I start sending motion commands, the update frequency drops
> to 3-4 Hz. The CPU is hardly loaded. I used to work with player 1.6.5 and I
> did not have this problem.
>
> I would like to know if anyone else ran into this problem. I am starting my
> investigation today and I will post my findings soon.
>
> Thanks

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Re: Rflex Driver Slows down when commanded to Move

2009-12-01T14:22:37Z

Unless you are writing a driver, you should use the client library
functions to send and receive data now, rather than sending the messages
directly yourself.

The data rate may be slowing if the robot's controller is too busy
moving the robot to send data back as fast. Does the data rate increase
once the robot completes its move?

Geoff

Giri_Nathan wrote:

> Player version:2.1.1
> Robot:ATRV-JR
>
> I am using the RFLEX driver to control the robot. Basically, my control
> driver, subscribes to the position2D interface of the RFLEX driver.
> I send motion commands to the robot like this:
> robot_dev->PutMsg(InQueue, PLAYER_MSGTYPE_CMD, PLAYER_POSITION2D_CMD_VEL,
> &vel_command, sizeof(vel_command), NULL);
>
> In player 1.6.5, I used to send the commands this way:
> PutCommand(this->velocity_position_id,
>
> (unsigned
> char*)&cmd,sizeof(cmd),×tamp);
>
> I am also logging the position2d using the writelog driver. I noticed that
> when I am not issuing any commands to the robot, the data is logged at 10
> HZ. As soon as I start sending motion commands, the update frequency drops
> to 3-4 Hz. The CPU is hardly loaded. I used to work with player 1.6.5 and I
> did not have this problem.
>
> I would like to know if anyone else ran into this problem. I am starting my
> investigation today and I will post my findings soon.
>
> Thanks

Re: winding patch

2009-12-01T13:47:24Z

> Jeff Donner wrote:
>> Here's a patch. A small amount of Googling didn't turn up what looked
>> like a simple, reliable method so this one is homegrown.
>> It's naive and expensive, but at least it's understandable and
>> shouldn't have any non-intrinsic ways to fail (and wrt expense, it's
>> done only once, at load time).

Applied in trunk (rev 8444). Thanks very much, Jeff.

Richard/

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Rflex Driver Slows down when commanded to Move

2009-12-01T12:22:35Z

Player version:2.1.1
Robot:ATRV-JR

I am using the RFLEX driver to control the robot. Basically, my control driver, subscribes to the position2D interface of the RFLEX driver.
I send motion commands to the robot like this:
robot_dev->PutMsg(InQueue, PLAYER_MSGTYPE_CMD, PLAYER_POSITION2D_CMD_VEL,
&vel_command, sizeof(vel_command), NULL);

In player 1.6.5, I used to send the commands this way:
PutCommand(this->velocity_position_id,

(unsigned char*)&cmd,sizeof(cmd),×tamp);

I am also logging the position2d using the writelog driver. I noticed that when I am not issuing any commands to the robot, the data is logged at 10 HZ. As soon as I start sending motion commands, the update frequency drops to 3-4 Hz. The CPU is hardly loaded. I used to work with player 1.6.5 and I did not have this problem.

I would like to know if anyone else ran into this problem. I am starting my investigation today and I will post my findings soon.

Thanks

Playernav: Refresh map doesn't work

2009-12-01T11:16:02Z

Hello,

I am trying to use grid maps (.gpm) produced by pmaptest with
playernav (player-3.1.0-svn) to do SLAM.

To update the map within playernav the 'View' -> 'Refresh map' doesn't
work, nothing happens.
I have to restart playernav and the player server running the
'mapfile' driver to get the new map displayed.

Thanks for any ideas, is it a bug?

Sebastian

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Re: Player: Having multiple clients requiring same device

2009-12-01T04:51:46Z

Thanks, that works great!

Sebastian

Am 30.11.2009 um 21:08 schrieb Rich Mattes:

If you want to provide the laser on port 6666, then you need to run player
with the option -p 6666. Try the following:
PlayerServer1: player -p 6666 laser.cfg
PlayerServer2: player -p 6667 server2.cfg
PlayerServer3: player -p 6668 server3.cfg

Inside of laser.cfg, change the "provides" to ["laser:0"]. The Player
server is now running on port 6666, so the laser interface will be
accessible on that port without manually specifying 6666 in the "provides"
section. I'm not sure if Player can provide an interface on a port that's
different from the port that the server is running on.

Inside of server2.cfg and server3.cfg, change the requires to
["::6666:laser:0"]. It may or may not work without the extra colons, I've
never tried it without them.

I'm pretty sure you can't run two instances of Player on the same port, or
else you get the "Address already in use" issue.

Laser proxy!

2009-11-30T23:55:51Z

Hello all,

I want to ask, if anyone knows about the possibility to find out that which number of scan is receiving through player laser proxy.

Kind regards and wishes,

Irtiza Ali

PhD Candidate,
GET Lab, University of Paderborn
Germany

Understanding AMCL driver.

2009-11-30T21:46:14Z

Hi,

I am trying to understand AMCL driver in depth. I am going through the
source code.I have read and roughly understood the first 8 chapters of
Probabilistic Robotics. And I am writing basic MCL in Matlab, but was
using Player's AMCL as a reference.

I could not figure out which function in the driver calculates the
weight ( probability ) of all the given set of possible poses
( particles ). I understand that this is to be done using map and the
sensor readings.

If you could even tell me which algorithm from probabilistic is used to
find the weight then I could refer to the book to understand the code
better.

Thank you.
-Suraj Swami.

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