R: Draw a rectangle with rounded corners

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=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"))

[Package grid version 3.1.2 Index]