| ellipse | R Documentation | 
Create ellipse on the current plot
ellipse(xc = 0, yc = 0, a, b, col = "black", lty = 1, ...)
xc | 
 coordinate of center (x)  | 
yc | 
 coordinate of center (y)  | 
a | 
 major axis  | 
b | 
 minor axis  | 
col | 
 color of the ellipse line  | 
lty | 
 type of the ellipse line  | 
... | 
 any argument suitable for   | 
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