ellipse: Plots an Ellipse
Description
##' Plots an ellipseUsage
ellipse(x0, y0, axisX, axisY, color = "lightgray")
Arguments
x0
the x coordinate of the center of the circle
y0
the y coordinate of the center of the circle
axisX
the radius along the x axis
axisY
the radius along the y axis
color
what color should the ellipse be drawn in