[ros-users] rosbag record a subset of tf

Hey all,

I was just wondering: Is there a way to record a subset of the tf tree when
doing 'rosbag record tf'?

To provide a bit of context, I'm recording ~400 seconds of data. The
desired sensor readings occupy all of 500 kB, but the tf occupies upwards of
140 MB. I only need a very small subset of the tf tree (not the whole PR2
tf tree): /map, /base_link, etc.

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~Travis Deyle