Please disregard my previous email. I replied at an incorrect part of this email thread.

Sorry.

Copied my reply below:

I agree with Shaun.

My personal preference is for the message name to reflect the message data type as opposed to what the message is used for.

The topic name can then tell us whether the message is being used for humidity or pressure.

On Nov 13, 2012 7:09 AM, "Edwards, Shaun M." <sedwards@swri.org> wrote:
All,

I'm going to throw this out there for discussion since I have struggled with it myself.  Do we really need message types for simple analog values, such as humidity or pressure.  Is it enough to just have an analog message (I believe there is one already) with an appropriate topic name.  The main reason for my dilemma is that you can write some pretty generic nodes, say filtering for example, that can work on any analog value.  If we create special messages for each type of analog value, then a generic node becomes more difficult.  Thoughts?

Shaun Edwards
Senior Research Engineer
Manufacturing System Department


http://robotics.swri.org
http://rosindustrial.swri.org/
http://ros.swri.org
Southwest Research Institute
210-522-3277

-----Original Message-----
From: ros-users-bounces@code.ros.org [mailto:ros-users-bounces@code.ros.org] On Behalf Of Stephan Wirth
Sent: Tuesday, November 13, 2012 4:24 AM
To: User discussions
Subject: Re: [ros-users] sensor_msgs Low Cost/Android review

On Sat, Nov 10, 2012 at 3:24 AM, Chad Rockey <chadrockey@gmail.com> wrote:
> Hi everyone,
>
> I'm proposing a few new messages for sensor_msgs.  These messages are
> intended to provide common, shareable data types for new low cost and
> mobile sensing applications.


+1!
We defined similar Pressure/Humidity messages for our underwater robot due to the lack of standard messages.

Stephan

--
Stephan Wirth
Systems, Robotics and Vision Group
Department of Mathematics and Computer Science University of the Balearic Islands http://srv.uib.es _______________________________________________
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