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(file = ifelse(onefile, "Rplots.fig", "Rplot%03d.fig"), onefile = FALSE, encoding = "none", paper = "default", horizontal = TRUE, width = 0, height = 0, family = "Helvetica", pointsize = 12, bg = "transparent", fg = "black", pagecentre = TRUE, defaultfont = FALSE, textspecial = FALSE)
- a character string giving the name of the file. For use
onefile = FALSEgive a C integer format such as
"Rplot%03d.fig"(the default in that case). (See
postscriptfor further details.)
- 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.
- 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
EUCencoding. If re-encoding fails, the text strings will be written in the current encoding with a warning.
- the size of paper region. The choices
"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 to a non-empty value, otherwise
- 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 0.5 inch overall margin in each direction. (See
postscriptfor further details.)
- the font family to be used. This must be one
"Times". Any other value is replaced by
"Helvetica", with a warning.
- the default point size to be used.
- the initial background color to be used.
- the initial foreground color to be used.
- logical: should the device region be centred on the page?
- logical: should the device use xfig's default font?
- logical: should the device set the textspecial flag for all text elements. This is useful when generating pstex from xfig figures.
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.
file argument is interpreted as a C integer format as used
sprintf, with integer argument the page number.
The default gives files Rplot001.fig, ..., Rplot999.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, shareware), or XFig under Cygwin.
Only some line textures ( There is a limit of 512 colours (plus white and black) per file.
0 <= lty="" <="" 4<="" code="">) are used. Eventually this
may 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.=>
This section describes the implementation of the conventions for graphics devices set out in the R Internals Manual.
- The default device size is the paper size with a 0.25 inch border on all sides.
- Font sizes are in big points.
- The default font family is Helvetica.
- Line widths are integers, multiples of 5/432 inch.
- Circle radii are multiples of 1/1200 inch.
- Colours are interpreted by the viewing/printing application.