ggregory8's profile - activity

Hi,

You can echo straight into a file using:

rostopic echo /topic > filename.txt

But this isn't ideal as it will be the same format as the echo displays it to the commandline.

A better way is to record topics using rosbag and then you can write the topic data you want straight to a file using:

rostopic echo -b file.bag -p /topic > filename.txt

This has the benefit of formatting the data suitable for a csv file, which you can then manipulate with excel / matlab.

Yes this is working now. Thanks for the advice!

I didn't realise Hydro had alot more support for ARM debs. I was using Groovy. So I installed Hydro and managed to install all dependencies via apt-get. The ar_track_alvar compile from source seemed to go without any errors. Just ran out of time to test. I will update tomorrow.

Ok I didn't realise it was armv6. I did actually checkout the offical ar_track_alvar package and try to compile, but was having alot of depenancy errors that were related to the pcl_ros packages etc. I haven't troubleshoot this yet so, I'll get back to that and see how I go. I just wanted to see if anyone had already done this. I'll report back with any specific errors I encounter that I can't resolve for help. Thanks.

Thanks for the reply. I found http://64.91.227.57/repos/rospbian/debbuild/groovy.html which is specific for Raspbian. I haven't quite figured out how those pages work but it looks like ar_track_alvar is available as a debian package from this farm. Any ideas if this would likely run on Linaro 12.11, or is Raspbian quite different. Alternatively how do I find the source for these packages listed on this site? I could use there source as a base as Raspberry Pi is ARM architecture too.

Hi, Has anyone installed ar_track_alvar on arm yet? I'm wanting to do this on an Odroid-U3 which is armv7l.

Is it available in Debian, or prebuilt binary? Or most likely I'll need to built from source.

I know it depends on pcl_ros, but I'm also wondering if you can build without this if not using kinect depth based features?

Any tips or previous work people has done on this would be much appreciated.

Thanks

Did you get an answer to this? I am having the same problem.