Calculator result logging

[ipa-kut]

Write the final result to a file (Ex: Braking distance)

Point to consider: Calculators can be used in different ways, and logging depends on each specific test. Either dictate the loggig method (never, once, continuous) as a rosparam in the config yaml OR UI could do this, since it knows the final result availability BUT UI should not be a logger.

[ipa-rwu]

We can have a function:

• input:
  • "topic"
  • "log trigger singal"
  • "log file name"
• output
  • "not sure"

data structure:

• timestamp (from topic)
• tipic
• data string

[ipa-kut]

Output could be bool, true if succesfully written.

What data is this a structure of?

[ipa-kut]

• [x] Check if rqt_multiplot can save time series data

[ipa-rwu]

So far I didn't figure out how to save data from rqt_multiplot automatically. I only create a function to log simple data from calculators. This log only is used internally. e4aa702

[ipa-kut]

Closed by https://github.com/ipa320/araig_test_stack/pull/35