Extrapolate Line Segments to Obtain Infinite Lines
Given a spatial pattern of line segments, extrapolate the segments to infinite lines.
extrapolate.psp(x, ...)
x |
Spatial pattern of line segments (object of class |
... |
Ignored. |
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).
An object of class "infline" representing the pattern of
infinite lines. See infline for details of
structure.
Adrian Baddeley Adrian.Baddeley@curtin.edu.au, Rolf Turner r.turner@auckland.ac.nz and Ege Rubak rubak@math.aau.dk.
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
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