internal function to rotate a vector of points

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Description

Rotates a set of points around a center point a given number of radians

Usage

1
rotateV(x2, y2, x0, y0, ang)

Arguments

x2

Vector containing x coordinates being rotated

y2

Vector containing y coordinates being rotated

x0

x coordinate of center of rotation

y0

y coordinate of center of rotation

ang

Angle of rotation given in radians

Value

set of rotated points

Author(s)

JP Bida

See Also

rotateS

Examples

1
2
3
x=c(1,0,-1,0)
y=c(0,1,0,-1)
pts=rotateV(x,y,0,0,pi/4)