shotGroups (version 0.1)

drawBox: Draw an axis-aligned box

Description

Adds an axis-aligned box to an already opened plot.

Usage

drawBox(xleft, ybottom, xright, ytop, fg = par('fg'), bg = NA,
        colCtr = NA, lty = par('lty'), lwd = par('lwd'),
        pch = par('pch'), cex = par('cex'))

Arguments

xleft

a vector (or scalar) of left x positions.

ybottom

a vector (or scalar) of bottom y positions.

xright

a vector (or scalar) of right x positions.

ytop

a vector (or scalar) of top y positions.

fg

color of the box' rim.

bg

color of the box' fill color. Set to NA for a fully transparent box.

colCtr

color of the center point. Set to NA to omit.

lty

line type of the box.

lwd

line width of the box.

pch

symbol used for the center of the box.

cex

magnification factor for symbol used for the center of the box.

Details

This function is mainly a wrapper for rect.

See Also

getBoundingBox, rect

Examples

xy <- matrix(round(rnorm(20, 100, 15), 1), ncol=2)
bb <- getBoundingBox(xy)
plot(xy, asp=1, pch=16)
drawBox(bb$pts[1], bb$pts[2], bb$pts[3], bb$pts[4],
        fg='blue', colCtr='blue', pch=4, cex=2)