spatstat.geom (version 3.3-2)

extrapolate.psp: Extrapolate Line Segments to Obtain Infinite Lines

Description

Given a spatial pattern of line segments, extrapolate the segments to infinite lines.

Usage

extrapolate.psp(x, ...)

Value

An object of class "infline" representing the pattern of infinite lines. See infline for details of structure.

Arguments

x

Spatial pattern of line segments (object of class "psp").

...

Ignored.

Author

Adrian Baddeley , Rolf Turner and Ege Rubak .

Details

Each line segment in the pattern x is extrapolated to an infinite line, drawn through its two endpoints. The resulting pattern of infinite lines is returned as an object of class "infline".

If a segment's endpoints are identical (so that it has zero length) the resulting infinite line is vertical (i.e. parallel to the \(y\) coordinate axis).

See Also

psp, infline

midpoints.psp, lengths_psp angles.psp, endpoints.psp.

Examples

   X <- psp(runif(4), runif(4), runif(4), runif(4), window=owin())
   Y <- extrapolate.psp(X)
   plot(X, col=3, lwd=4)
   plot(Y, lty=3)
   Y