circle.ind {dga}R Documentation

A Helper Function for venn3

Description

Used in venn3 to tell whether proposed points are inside of the given circle.

Usage

circle.ind(ps, x,y, r)

Arguments

ps

a n x 2 matrix of coordinates.

x

the x coordinate of the center of the circle.

y

the y coordinate of the center of the circle.

r

the radius of the circle.

Value

a length n vector telling whether each row of ps is inside the given circle.

Author(s)

Kristian Lum kl@hrdag.org

Examples



ps <- cbind(runif(100), runif(100))
plot(circle(0,0,1), type = 'l')
inds <- circle.ind(ps, 0, 0, 1)
points(inds)

[Package dga version 1.2 Index]