| roundrect {grid} | R Documentation | 
Draw a single rectangle with rounded corners.
roundrectGrob(x=0.5, y=0.5, width=1, height=1,
              default.units="npc",
              r=unit(0.1, "snpc"),
              just="centre",
              name=NULL, gp=NULL, vp=NULL) 
grid.roundrect(...) 
x, y, width, height | 
 The location and size of the rectangle.  | 
default.units | 
 A string indicating the default units to use
if   | 
r | 
 The radius of the rounded corners.  | 
just | 
 The justification of the rectangle relative to its location.  | 
name | 
 A name to identify the grob.  | 
gp | 
 Graphical parameters to apply to the grob.  | 
vp | 
 A viewport object or   | 
... | 
 Arguments to be passed to   | 
At present, this function can only be used to draw one rounded rectangle.
grid.roundrect(width=.5, height=.5, name="rr")
theta <- seq(0, 360, length=50)
for (i in 1:50) 
    grid.circle(x=grobX("rr", theta[i]),
                y=grobY("rr", theta[i]),
                r=unit(1, "mm"),
                gp=gpar(fill="black"))