roundrect {grid}

R Documentation

Draw a rectangle with rounded corners

Description

Draw a single rectangle with rounded corners.

Usage

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(...)

Arguments

x, y, width, height	The location and size of the rectangle.
default.units	A string indicating the default units to use if x, y, width, or height are only given as numeric vectors.
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 NULL.
...	Arguments to be passed to roundrectGrob().

Details

At present, this function can only be used to draw one rounded rectangle.

Examples

grid.roundrect(width=.5, height=.5, name="rr")
theta <- seq(0, 360, length.out=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"))

---