Re: [ros-users] transformPointCloud

Jack, Michael,

this of course makes perfect sense - thanks a lot for the clarification.
D.

On Wed, Apr 6, 2011 at 12:15 AM, Michael Ferguson <mfergs7@gmail.com> wrote:
> The issue is that TF output is streamed to each node, and is buffered in the
> listener -- if you create the listener inside the callback, you have no
> history of tf data before creation -- which means you often can't find the
> lookup you desire.
>
> -Mike
>
> On Tue, Apr 5, 2011 at 6:10 PM, Jack O'Quin <jack.oquin@gmail.com> wrote:
>>
>> On Tue, Apr 5, 2011 at 5:05 PM, Dejan Pangercic
>> <dejan.pangercic@gmail.com> wrote:
>> > Hi Sabrina,
>> >
>> >> you should instantiate the TransformListener outside the callback:
>> >>
>> >> tf::TransformListener *tf_listener;
>> > this is very interesting. But do you know why would it be necessary to
>> > have it outside the callback? Is there a documentation about this?
>>
>> I believe the destructor for the listener will shut down the connection.
>>
>> Many ROS interfaces use the RAII approach.
>> --
>>  joq
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>
>
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MSc. Dejan Pangercic
PhD Student/Researcher
Intelligent Autonomous Systems Group
Technische Universität München
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