> On Wed, Jun 9, 2010 at 2:14 AM, Miguel Prada<
miguel.register@gmail.com>
wrote:
>
>> Hi Jeremy,
>>
>> Thanks for the tip. That's exactly what I've been doing after
writing to the list and it works great.
>>
>> However, shouldn't rostopic output the bagfile's timestamps
when echoing from a bagfile? I find it much more reasonable than having
to programatically read the data using python to achieve this result.
Am I missing some important reason for rostopic echo to behave this way?
>>
>> Miguel.
>>
>> El 09/06/2010, a las 10:33, Jeremy Leibs escribió:
>>
>>
>>> Assuming you are still using boxturtle, rosrecord has a
rosrecord.py
>>> programmatic API
>>>
>>> Take a look at:
>>>
>>>
http://www.ros.org/wiki/rosrecord#rosrecord.py
>>>
>>> It should be fairly straight forward to write a small
program which
>>> opens the bag and prints exactly what you want.
>>>
>>> On Wed, Jun 9, 2010 at 1:29 AM, Miguel Prada<
miguel.register@gmail.com>
wrote:
>>>
>>>> Hi,
>>>>
>>>> I want to manipulate some data from a bag file with a
spreadsheet. I'm exporting from the bag to CSV using 'rostopic echo -p
-b BAGFILE TOPIC>> file.csv' but I just realised that the time
field you get from doing that is the time corresponding to when
rostopic is run, not the time stored in the bag file. That means that
if I use this method to output messages in one topic and then repeat
for another topic (e.g. controller commands and robot positions) the
time fields on both CSV files are of no use at all to merge the data in
those two files.
>>>>
>>>> I tried using 'rostopic echo -p -b BAGFILE -a>>
file.csv' to print all topics at once, but the output is quite messed
up and doesn't clearly state which data corresponds to which topic.
>>>>
>>>> Does anyone have any suggestion on how should I
proceed with this?
>>>>
>>>> Miguel.
>>>>
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>>>>
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>>>>
>>>>
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