Syntax:
set terminal x11 {reset} {<n>}
Multiple plot windows are supported: set terminal x11 
n
directs the
output to plot window number n. If n0, the terminal number will be
appended to the window title and the icon will be labeled gplt n.
The active window may distinguished by a change in cursor (from default
to crosshair.)
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).
Plot windows will automatically be closed at the end of the session unless the -persist option was given.
The size or aspect ratio of a plot may be changed by resizing the gnuplot window.
Linewidths and pointsizes may be changed from within gnuplot with set linestyle.
For terminal type x11, gnuplot accepts (when initialized) the standard X Toolkit options and resources such as geometry, font, and name from the command line arguments or a configuration file. See the X(1) man page (or its equivalent) for a description of such options.
A number of other gnuplot options are available for the x11 terminal. These may be specified either as command-line options when gnuplot is invoked or as resources in the configuration file "/.Xdefaults". They are set upon initialization and cannot be altered during a gnuplot session. Command-line_options In addition to the X Toolkit options, the following options may be specified on the command line when starting gnuplot or as resources in your ".Xdefaults" file:
| `-mono` | forces monochrome rendering on color displays. |
| `-gray` | requests grayscale rendering on grayscale or color displays. |
| (Grayscale displays receive monochrome rendering by default.) | |
| `-clear` | requests that the window be cleared momentarily before a |
| new plot is displayed. | |
| `-tvtwm` | requests that geometry specifications for position of the |
| window be made relative to the currently displayed portion | |
| of the virtual root. | |
| `-raise` | raise plot window after each plot. |
| `-noraise` | do not raise plot window after each plot. |
| `-persist` | plot windows survive after main gnuplot program exits. |
Example:
gnuplot*gray: on
gnuplot also provides a command line option (-pointsize v) and a
resource, gnuplot*pointsize: v, to control the size of points plotted
with the points plotting style. The value v is a real number (greater
than 0 and less than or equal to ten) used as a scaling factor for point
sizes. For example, -pointsize 2 uses points twice the default size, and
-pointsize 0.5 uses points half the normal size.
Monochome_options
For monochrome displays, gnuplot does not honor foreground or background
colors. The default is black-on-white. -rv or gnuplot*reverseVideo: on
requests white-on-black.
Color_resources For color displays, gnuplot honors the following resources (shown here with their default values) or the greyscale resources. The values may be color names as listed in the X11 rgb.txt file on your system, hexadecimal RGB color specifications (see X11 documentation), or a color name followed by a comma and an intensity value from 0 to 1. For example, blue, 0.5 means a half intensity blue.
| gnuplot*background: white | |
| gnuplot*textColor: black | |
| gnuplot*borderColor: black | |
| gnuplot*axisColor: black | |
| gnuplot*line1Color: red | |
| gnuplot*line2Color: green | |
| gnuplot*line3Color: blue | |
| gnuplot*line4Color: magenta | |
| gnuplot*line5Color: cyan | |
| gnuplot*line6Color: sienna | |
| gnuplot*line7Color: orange | |
| gnuplot*line8Color: coral |
The command-line syntax for these is, for example,
Example:
gnuplot -background coral
Grayscale_resources When -gray is selected, gnuplot honors the following resources for grayscale or color displays (shown here with their default values). Note that the default background is black.
| gnuplot*background: black | |
| gnuplot*textGray: white | |
| gnuplot*borderGray: gray50 | |
| gnuplot*axisGray: gray50 | |
| gnuplot*line1Gray: gray100 | |
| gnuplot*line2Gray: gray60 | |
| gnuplot*line3Gray: gray80 | |
| gnuplot*line4Gray: gray40 | |
| gnuplot*line5Gray: gray90 | |
| gnuplot*line6Gray: gray50 | |
| gnuplot*line7Gray: gray70 | |
| gnuplot*line8Gray: gray30 |
Line_resources gnuplot honors the following resources for setting the width (in pixels) of plot lines (shown here with their default values.) 0 or 1 means a minimal width line of 1 pixel width. A value of 2 or 3 may improve the appearance of some plots.
| gnuplot*borderWidth: 2 | |
| gnuplot*axisWidth: 0 | |
| gnuplot*line1Width: 0 | |
| gnuplot*line2Width: 0 | |
| gnuplot*line3Width: 0 | |
| gnuplot*line4Width: 0 | |
| gnuplot*line5Width: 0 | |
| gnuplot*line6Width: 0 | |
| gnuplot*line7Width: 0 | |
| gnuplot*line8Width: 0 |
gnuplot honors the following resources for setting the dash style used for
plotting lines. 0 means a solid line. A two-digit number jk (j and k
are = 1 and = 9) means a dashed line with a repeated pattern of j pixels
on followed by k pixels off. For example, '16' is a "dotted" line with one
pixel on followed by six pixels off. More elaborate on/off patterns can be
specified with a four-digit value. For example, '4441' is four on, four off,
four on, one off. The default values shown below are for monochrome displays
or monochrome rendering on color or grayscale displays. For color displays,
the default for each is 0 (solid line) except for axisDashes which defaults
to a '16' dotted line.
| gnuplot*borderDashes: 0 | |
| gnuplot*axisDashes: 16 | |
| gnuplot*line1Dashes: 0 | |
| gnuplot*line2Dashes: 42 | |
| gnuplot*line3Dashes: 13 | |
| gnuplot*line4Dashes: 44 | |
| gnuplot*line5Dashes: 15 | |
| gnuplot*line6Dashes: 4441 | |
| gnuplot*line7Dashes: 42 | |
| gnuplot*line8Dashes: 13 |