ellipse {dga} | R Documentation |
Draws the ellipses used in venn4.
ellipse(x,y,a,b,alpha)
x |
the x coordinate of the center of the ellipse. |
y |
the y coordinate of the center of the ellipse. |
a |
the x-direction radius. |
b |
the y-direction radius. |
alpha |
the angle of rotation of the ellipse |
points that define the perimeter of an ellipse.
Kristian Lum kl@hrdag.org
plot(ellipse(0,0,.5, .2, 1))