xfig {grDevices}R Documentation

XFig Graphics Device


xfig starts the graphics device driver for producing XFig (version 3.2) graphics.

The auxiliary function ps.options can be used to set and view (if called without arguments) default values for the arguments to xfig and postscript.


xfig(file = ifelse(onefile, "Rplots.fig", "Rplot%03d.fig"),
     onefile = FALSE, encoding = "none", ...)


file a character string giving the name of the file. For use with onefile = FALSE give a C integer format such as "Rplot%03d.fig" (the default in that case). (See postscript for further details.)
onefile logical: if true allow multiple figures in one file. If false, assume only one page per file and generate a file number containing the page number.
encoding The encoding in which to write text strings. The default is not to re-encode. This can be any encoding recognized by iconv: in a Western UTF-8 locale you probably want to select an 8-bit encoding such as latin1, and in an East Asian locale an EUC encoding. If re-encoding fails, the text strings will be written in the current encoding with a warning.
... further arguments to ps.options accepted by xfig():
the size of paper in the printer. The choices are "A4", "Letter" and "Legal" (and these can be lowercase). A further choice is "default", which is the default. If this is selected, the papersize is taken from the option "papersize" if that is set and to "A4" if it is unset or empty.
the orientation of the printed image, a logical. Defaults to true, that is landscape orientation.
width, height
the width and height of the graphics region in inches. The default is to use the entire page less a 0.25 inch border.
the font family to be used. This must be one of "AvantGarde", "Bookman", "Courier", "Helvetica", "Helvetica-Narrow", "NewCenturySchoolbook", "Palatino" or "Times". Any other value is replaced by "Helvetica" with a warning.
the default point size to be used.
the default background color to be used.
the default foreground color to be used.
logical: should the device region be centred on the page: defaults to TRUE.


Although xfig can produce multiple plots in one file, the XFig format does not say how to separate or view them. So onefile = FALSE is the default.

The file argument is interpreted as a C integer format as used by sprintf, with integer argument the page number. The default gives files ‘Rplot001.fig’, ..., ‘Rplot999.fig’, ‘Rplot1000.fig’, ....

Line widths as controlled by par(lwd=) are in multiples of 5/6*1/72 inch. Multiples less than 1 are allowed. pch="." with cex = 1 corresponds to a square of side 1/72 inch.

Windows users can make use of WinFIG (http://www.schmidt-web-berlin.de/WinFIG.htm).


Only some line textures (0 <= lty < 4) are used. Eventually this will be partially remedied, but the XFig file format does not allow as general line textures as the R model. Unimplemented line textures are displayed as dash-double-dotted.

There is a limit of 512 colours (plus white and black) per file.

See Also

Devices, postscript, ps.options.

[Package grDevices version 2.5.0 Index]