Show tree in Raw Message panel for small fixed numeric arrays

[jhurliman]

In the attached bag, using the Raw Message panel I can set the message path to /gps/fix.position_covariance[:] and see the list of all nine matrix cells. But if I use the topic only (/gps/fix) that field renders as

Float64Array(9) [0.011881, 0, 0, 0, 0.011881, 0, 0, 0, 0.009409]

With no ability to plot individual values. Since fixed arrays of length 3/4/9/16 are common in ROS for holding vectors and matrices, it would be nice if these showed up in a "more native" way in Studio vs the currently handling which seems more suited for large data buffers like image or point cloud data.

gps.bag.zip

[defunctzombie]

With no ability to copy-paste

Could you clarify this? I was able to copy the values directly from the RawMessage panel by selecting all the values between the [ ] in the topic version.

[defunctzombie]

You can also click the "Copy msg" icon to copy the entire message.

[defunctzombie]

Related change to make copying just an array easier:
https://github.com/foxglove/studio/pull/2016

[jhurliman]

@defunctzombie updated to only reference plotting.