# rotate.infline

0th

Percentile

##### Rotate or Shift Infinite Lines

Given the coordinates of one or more infinite straight lines in the plane, apply a rotation or shift.

Keywords
manip, spatial
##### Usage
# S3 method for infline
rotate(X, angle = pi/2, …)# S3 method for infline
shift(X, vec = c(0,0), …)# S3 method for infline
reflect(X)# S3 method for infline
flipxy(X)
##### Arguments
X

Object of class "infline" representing one or more infinite straight lines in the plane.

angle

vec

Translation (shift) vector: a numeric vector of length 2, or a list(x,y), or a point pattern containing one point.

Ignored.

##### Details

These functions are methods for the generic shift, rotate, reflect and flipxy for the class "infline".

An object of class "infline" represents one or more infinite lines in the plane.

##### Value

Another "infline" object representing the result of the transformation.

infline

##### Aliases
• rotate.infline
• shift.infline
• reflect.infline
• flipxy.infline
##### Examples
# NOT RUN {
L <- infline(v=0.5)

plot(square(c(-1,1)), main="rotate lines", type="n")
points(0, 0, pch=3)
plot(L, col="green")
plot(rotate(L, pi/12), col="red")
plot(rotate(L, pi/6), col="red")
plot(rotate(L, pi/4), col="red")

L <- infline(p=c(0.4, 0.9), theta=pi* c(0.2, 0.6))

plot(square(c(-1,1)), main="shift lines", type="n")
L <- infline(p=c(0.7, 0.8), theta=pi* c(0.2, 0.6))
plot(L, col="green")
plot(shift(L, c(-0.5, -0.4)), col="red")

plot(square(c(-1,1)), main="reflect lines", type="n")
points(0, 0, pch=3)
L <- infline(p=c(0.7, 0.8), theta=pi* c(0.2, 0.6))
plot(L, col="green")
plot(reflect(L), col="red")

# }

Documentation reproduced from package spatstat, version 1.61-0, License: GPL (>= 2)

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