dot-sizeScale: Customize the scale
In markrobinsonuzh/treeAGG: Tree Aggregation

.sizeScale customizes the size scale.

1 2	.sizeScale(col.point, size.point, legend.label, legend.title, size.point.legend, legend, ...)

`col.point`	A color for the point. It has length equal to one.
`size.point`	The size for the point. It has length equal to one.
`legend.label`	A list with three members: "col.branch", "col.other", and "col.point". The elements order in each member matches with the corresponding argument col.branch, col.other and col.point, and will display in the legend. See Examples.
`legend.title`	A vector to specify the title of the legend. It must be named with "branch" and "point" to match with the argument branch and point.
`size.point.legend`	the point size shown in the legend for point.
`legend`	TRUE or FALSE