ed: Calculates euclidean distance between two points.
Description
ed simply calculates euclidean distance between two points defined by their (x; y) coordinates. This function is used internally but may be of interest for other analyses.
Usage
ed(pt1, pt2)
Arguments
pt1
(x; y) coordinates of the first point.
pt2
(x; y) coordinates of the second point.
Value
Returns the euclidean distance between the two points.