gnuplot documentation

200 gnuplot 4.3 77 TERMINAL
you probably have to install one of the Adobe or OpenOffice Symbol fonts, and remove the Microsoft
one. Other non-conform fonts, such as "wingdings" have been observed working.
The rendering of the plot can be altered with a dialog available from the toolbar. To obtain the best
output possible, the rendering involves three mechanisms : antialiasing, oversampling and hinting. Antialiasing
allows to display non-horizontal and non-vertical lines smoother. Oversampling combined with
antialiasing provides subpixel accuracy, so that gnuplot can draw a line from non-integer coordinates.
This avoids wobbling effects on diagonal lines (’plot x’ for example). Hinting avoids the blur on horizontal
and vertical lines caused by oversampling. The terminal will snap these lines to integer coordinates
so that a one-pixel-wide line will actually be drawn on one and only one pixel.
By default, the window is raised to the top of your desktop when a plot is drawn. This can be controlled
with the keyword "raise". The keyword "persist" will prevent gnuplot from exiting before you explicitely
close all the plot windows. Finally, by default the key raises the gnuplot console window, and ’q’
closes the plot window. The keyword "ctrl" allows you to replace those bindings by + and
+’q’, respectively. These three keywords (raise, persist and ctrl) can also be set and remembered
between sessions through the configuration dialog.
77.76 X11
gnuplot provides the x11 terminal type for use with X servers. This terminal type is set automatically
at startup if the DISPLAY environment variable is set, if the TERM environment variable is set to
xterm, or if the -display command line option is used.
Syntax:
set terminal x11 {}
{title ""}
{{no}enhanced}
{font }
{{no}persist} {{no}raise} {solid|dashed} {{no}ctrlq}
{close}
set terminal x11 {reset}
Multiple plot windows are supported: set terminal x11 directs the output to plot window number
n. If n is not 0, the terminal number will be appended to the window title (unless a title has been supplied
manually) and the icon will be labeled Gnuplot . The active window may be distinguished by a
change in cursor (from default to crosshair).
The x11 terminal support enhanced text mode (see enhanced (p. 186)), subject to the available fonts.
In order for font size commands embedded in text to have any effect, the default x11 font must be
scalable. Thus the first example below will work as expected, but the second will not.
set term x11 enhanced font "arial,15"
set title ’{/=20 Big} Medium {/=5 Small}’
set term x11 enhanced font "terminal-14"
set title ’{/=20 Big} Medium {/=5 Small}’
Plot windows remain open even when the gnuplot driver is changed to a different device. A plot window
can be closed by pressing the letter q while that window has input focus, or by choosing close from a
window manager menu. All plot windows can be closed by specifying reset, which actually terminates
the subprocess which maintains the windows (unless -persist was specified). The close command can
be used to close individual plot windows by number. However, after a reset, those plot windows left
due to persist cannot be closed with the command close. A close without a number closes the current
active plot window.
The gnuplot outboard driver, gnuplot x11, is searched in a default place chosen when the program is
compiled. You can override that by defining the environment variable GNUPLOT DRIVER DIR to
point to a different location.
Plot windows will automatically be closed at the end of the session unless the -persist option was given.