Thanks - I wrote a node to publish bandwidth by pretty much copying 
ROSTopicBandwidth from rostopic.py and publishing instead of printing. 
There's a bit of lag, but it's good enough for what I'm doing.

-Dan

On 3/17/10 12:05 PM, Ken Conley wrote:
> Right now, the answer to your question is no. There are some prototype
> stat APIs embedded within roscpp and rospy, but they are not reliable
> yet. We've been meaning to bring them online as "rostopic bw" only
> prints *received bandwidth*, not published bandwidth (e.g. imagine
> you're saturating your wifi). We don't yet have a timetable for this.
>
> If you do end up writing a node, I suggest either looking at rosrecord
> (C++) or rostopic (python) for how you can dig deep into the
> roscpp/rospy APIs to minimize performance overhead, namely, turning
> off costly deserialization of messages.
>
>   - Ken
>
> On Wed, Mar 17, 2010 at 9:57 AM, Dan Lazewatsky
> <lazewatskyd@cse.wustl.edu>  wrote:
>    
>> rostopic bw only prints bandwidth usage. I would like to be able to plot
>> it with rxplot.
>>
>> On 3/17/10 11:54 AM, Miguel Prada wrote:
>>      
>>> Hi Dan,
>>>
>>> I think you can get the bandwidth used by a topic using rostopic.
>>>
>>> rostopic bw /topic
>>>
>>> Regards,
>>> Miguel
>>>
>>> El 17/03/2010, a las 17:47, Dan Lazewatsky escribió:
>>>
>>>
>>>        
>>>> Is there a way to get rxplot to plot the bandwidth used by a topic
>>>> (without writing a node that calculates and publishes the bandwidth)?
>>>>
>>>> Thanks,
>>>> -Dan
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