GNUPlot Manual

36 SET-SHOW gnuplot 4.0 65
36.18 Encoding
The set encoding command selects a character encoding. Syntax:
set encoding {}
show encoding
Valid values are
default - tells a terminal to use its default encoding
iso_8859_1 - the most common Western European font used by many
Unix workstations and by MS-Windows. This encoding is
known in the PostScript world as ’ISO-Latin1’.
iso_8859_2 - used in Central and Eastern Europe
iso_8859_15 - a variant of iso_8859_1 that includes the Euro symbol
cp850 - codepage for OS/2
cp852 - codepage for OS/2
cp437 - codepage for MS-DOS
koi8r - popular Unix cyrillic encoding
Generally you must set the encoding before setting the terminal type. Note that encoding is not supported
by all terminal drivers and that the device must be able to produce the desired non-standard
characters. The PostScript and X11 terminals support all encodings. OS/2 Presentation Manager
switches automatically to codepage 912 for iso 8859 2.
36.19 Fit
The fit setting defines where the fit command writes its output. If this option was built into your version
of gnuplot, it also controls whether parameter errors from the fit will be written into variables.
Syntax:
set fit {logfile {""}} {{no}errorvariables}
unset fit
show fit
The argument must be enclosed in single or double quotes.
If no filename is given or unset fit is used the log file is reset to its default value "fit.log" or the value
of the environmental variable FIT LOG.
Users of DOS-like platforms should note that the \ character has special significance in double-quoted
strings, so single-quotes should be used for filenames in different directories, or you have to write \\ for
each \. Or you can just use forward slashes, even though this is DOS.
If the given logfile name ends with a / or \, it is interpreted to be a directory name, and the actual
filename will be "fit.log" in that directory.
If the errorvariables option is turned on, the error of each fitted parameter computed by fit will be
copied to a user-defined variable whose name is formed by appending " err" to the name of the parameter
itself. This is useful mainly to put the parameter and its error onto a plot of the data and the fitted
function, for reference, as in:
set fit errorvariables
fit f(x) ’datafile’ using 1:2 via a, b
print "error of a is:", a_err
set label ’a=%6.2f’, a, ’+/- %6.2f’, a_err
plot ’datafile’ using 1:2, f(x)
36.20 Fontpath
The fontpath setting defines additional locations for font files searched when including font files. Currently
only the postscript terminal supports fontpath. If a file cannot be found in the current directory,