[R] Borders on a polygon

[beloitstudent]

Hi, I am trying to do some shading in R and am using the polygon() setting. 
I want the border on the top and bottom of the polygon, but not on the left
and right.  Is there a way to do this in R?  Thanks in advance!

beloitstudent
-- 
View this message in context: http://r.789695.n4.nabble.com/Borders-on-a-polygon-tp2246646p2246646.html
Sent from the R help mailing list archive at Nabble.com.