List of Graphical Devices

Description

The following graphics devices are currently available:

• postscript Writes PostScript graphics commands to a file
• pdf Write PDF graphics commands to a file
• pictex Writes LaTeX/PicTeX graphics commands to a file
• xfig Device for XFIG graphics file format
• bitmap bitmap pseudo-device via GhostScript (if available).

The following devices will be available if R was compiled to use them and started with the appropriate --gui argument:

• X11 The graphics driver for the X11 Window system
• png PNG bitmap device
• jpeg JPEG bitmap device GNOME Graphics driver for the GNOME GUI.

None of these are available under R CMD BATCH.

Usage

X11(...)
postscript(...)
pdf(...)
pictex(...)
png(...)
jpeg(...)
GNOME(...)
xfig(...)
bitmap(...)

dev.interactive()

Details

If no device is open, using a high-level graphics function will cause a device to be opened. Which device is given by options("device") which is initially set as the most appropriate for each platform: a screen device for most interactive use and postscript otherwise. The exception is interactive use under Unix if no screen device is known to be available, when postscript() is used for most systems; pdf() for Mac OS X.

Value

dev.interactive() returns a logical, TRUE iff an interactive (screen) device is in use.

See Also

The individual help files for further information on any of the devices listed here;

dev.cur, dev.print, graphics.off, image, dev2bitmap.

capabilities to see if X11, jpeg and png are available.

Examples

## Not run: 
## open the default screen device on this platform if no device is
## open
if(dev.cur() == 1) get(getOption("device"))()
## End(Not run)