pline: Point to line distance

In GEOmap: Topographic and Geologic Mapping

Point to line distance

Description

get sortest distance from arbitrary point to a segment.

Usage

pline(x1, y1, x2, y2, ex, ey)

Arguments

x1	x coordinate segment start
y1	y coordinate segment start
x2	x coordinate segment end
y2	y coordinate segment end
ex	x, point
ey	y point

Value

vector of:

dis	distance to segment
dee	distance to line
zee	projection along line
px	x, point of intersection
py	y, point of intersection

Author(s)

Jonathan M. Lees<[e-mail]>

See Also

polyintern

Examples

L=list()
L$x=c(-0.161416832868, 0.484046270443,-0.472622257679)
L$y=c(-0.735779816514, 0.306422018349, 0.192660550459)

P = pline(L$x[1], L$y[1], L$x[2], L$y[2], L$x[3], L$y[3])

plot(L$x, L$y, type='n', asp=1)
segments(L$x[1], L$y[1], L$x[2], L$y[2])
points( L$x[3], L$y[3])

segments(L$x[3], L$y[3], P[4], P[5], col='red')

GEOmap documentation built on Sept. 1, 2023, 5:09 p.m.