circle.ind {dga} | R Documentation |
Used in venn3 to tell whether proposed points are inside of the given circle.
circle.ind(ps, x, y, r)
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. |
a length n vector telling whether each row of ps is inside the given circle.
Kristian Lum kl@hrdag.org
ps <- cbind(runif(100), runif(100))
plot(dga:::circle(0, 0, 1), type = "l")
inds <- dga:::circle.ind(ps, 0, 0, 1)
points(inds)