Jack et al, <div><br></div><div> As the maintainer of the sensor_msgs I'd be happy to add a message which has reached a consensus through the review process. However as I am not an active user of gps devices thus would not be a good person to head this effort. </div>
<meta http-equiv="content-type" content="text/html; charset=utf-8"><div><br></div><div>If one of you would like to volunteer to write a proposal and run it through the review process I'd be happy to advise and help. As Jack mentioned, the time is ripe for addition for diamondback. Optimally it would be added within the next month to allow it time to soak and users to give feedback before the final release in diamondback. </div>
<div><br></div><div>Tully<br><br><div class="gmail_quote">On Thu, Sep 16, 2010 at 9:16 AM, Jack O'Quin <span dir="ltr"><<a href="mailto:jack.oquin@gmail.com">jack.oquin@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
I think it's about time to resurrect this discussion about adding GPS<br>
messages to sensor_msgs for the Diamondback release. Getting the<br>
messages defined early and committed to unstable will provide people a<br>
chance to experiment with them before interfaces get frozen for the<br>
release.<br>
<br>
I am interested in participating. Let's discuss options some more here<br>
on the mailing list. If there is a consensus on a fairly concrete<br>
approach, we could probably start a package proposal and API review on<br>
it soon after.<br>
<div><div></div><div class="h5"><br>
On Fri, May 21, 2010 at 11:05 PM, Bill Morris <<a href="mailto:morris@ee.ccny.cuny.edu">morris@ee.ccny.cuny.edu</a>> wrote:<br>
> On Fri, 2010-05-21 at 22:03 -0500, Jack O'Quin wrote:<br>
>> On Fri, May 21, 2010 at 9:35 PM, Tully Foote <<a href="mailto:tfoote@willowgarage.com">tfoote@willowgarage.com</a>> wrote:<br>
>><br>
>> > With regards to a location of a potential GPS message within the ROS package<br>
>> > ecosystem, as the maintainer of common_msgs this seems like a strong<br>
>> > candidate for inclusion in the sensor_msgs package.<br>
>><br>
>> Good idea. I hadn't thought of that. I was imagining a new package<br>
>> defining both the messages and some utility functions.<br>
>><br>
>> Putting just the messages in sensor_msgs is better. There might end up<br>
>> being two or three messages, depending on how people decide to<br>
>> structure it.<br>
><br>
> sensor_msgs seems like a good place for the messages. I think it should<br>
> be three messages; GPS fix, status and waypoints/landmarks. A message<br>
> that describes a moving object may also be useful for swarming aircraft.<br>
><br>
>> > As for the library components doing a package proposal for gps_common would<br>
>> > be a good idea.<br>
>><br>
>> I just realized that Ken Tossell already has a gps_common package in<br>
>> the umd-ros-pkg (University of Maryland). Looks like it only has a<br>
>> message definition right now.<br>
>><br>
>> Whether we call it that or something similar, should it be a separate<br>
>> stack or part of some existing one?<br>
><br>
> I would guess that the gps related functions belong in a package in the<br>
> navigation stack. I think gps_common sounds like a reasonable name.<br>
><br>
> Great circle distance between the current gps position and waypoints<br>
> would be a useful function. Functions to calculate the heading to the<br>
> next waypoint and time to next way point at current speed may also be<br>
> useful.<br>
><br>
> I imagine a waypoint/landmark being a position with a rectangular of<br>
> spherical volume, an optional desired heading, and a text label.<br>
><br>
> I am willing to try to find some time this weekend to put together the<br>
> review page with a summary of the current ideas for the package and<br>
> messages if/when we have consensus on where they belong.<br>
<br>
<br>
</div></div>--<br>
<font color="#888888"> joq<br>
</font><div><div></div><div class="h5">_______________________________________________<br>
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</div></div></blockquote></div><br><br clear="all"><br>-- <br>Tully Foote<br>Systems Engineer<br>Willow Garage, Inc.<br><a href="mailto:tfoote@willowgarage.com">tfoote@willowgarage.com</a><br>(650) 475-2827<br>
</div>