point Element (GPL)
Syntax
point.<collision modifier>(<function>)
<collision modifier>. A method that specifies what should happen when two points overlap each other. The collision modifier is optional.
<function>. One or more valid functions. The position function
is required. The scale function is required when
there are multiple scales in a single dimension (as in a "dual axis"
graph).
Description
Specifies a point graphic element, as would be used in a scatterplot.
Examples
ELEMENT: point(position(salbegin*salary))
ELEMENT: point.dodge.symmetric(position(bin.dot(salary)))