reporter — str|func(int), required
A reference to a previously registered reporter, or a function that takes the model time (int) as its only argument and returns a numeric. See
label — str, required
The name of the bar, to be displayed below the axes (or to the left, for a horizontal chart).
color — str|Color, required
position — int, optional
The position in which to insert the bar among existing bars. By default the bar is appended to the end. NOTE: Position is calculated as of the function call. If two bars are called with position 3 for example, the second will push the first to position 4.
Default value: None