edi simply calculates coordinates of a points at the relative
distance r on the pt1-pt2 defined by their (x; y) coordinates.
This function is used internally but may be of interest for other analyses.
Arguments
- pt1
\((x; y)\) coordinates of the first point.
- pt2
\((x; y)\) coordinates of the second point.
- r
the relative distance from pt1 to pt2.
Value
returns the \((x; y)\) interpolated coordinates.
Examples
edi(c(0,1), c(1,0), r = 0.5)
#> [1] 0.5 0.5
