heightUnit

default = "res". Unit for height of the hexagon. Possible values:

• "res": if stat = Stat.binhex(), the unit equals the hexagonal bin height (binWidth.second); otherwise, it represents the smallest distance between adjacent hexagons along the corresponding axis;

• "identity": a unit of 1 corresponds to a difference of 1 in data space;

• "size": a unit of 1 corresponds to the diameter of a point with size=1;

• "px": the unit is measured in screen pixels.