G4 pattern generator

[floesche]

• Description of parameters – perhaps would be useful to label the required parameters (ones used by downstream functions if someone is generating the pattern on their own)
• Also missing an explanation of how the system works. Perhaps this is somewhere else, but you get a description of how to generate a pattern without knowing what a pattern is and how it is used in the setup.
  Pattern is a 4D (or is it 3D now?) matrix where first 2 dimensions map onto the arena (effectively a single frame that is displayed and second 2 are used to change the pattern according to the experimenter’s needs (for example if the pattern is a moving bar then 3rd dimension is the bar in different positions and the 4th is the bar in different widths at the same position)
• Or in other words (for both of the above), what is the basic structure that qualifies as a pattern. What are the necessary fields, what is type of variable they are, etc.

This issue is part of the second feedback round, received 2020-10-26.