GNUPlot Manual

36 SET-SHOW gnuplot 4.0 147
See also Time/date (p. 27) for more information.
36.81 Xdtics
The set xdtics commands converts the x-axis tic marks to days of the week where 0=Sun and 6=Sat.
Overflows are converted modulo 7 to dates. set noxdtics returns the labels to their default values.
Similar commands do the same things for the other axes.
Syntax:
set xdtics
unset xdtics
show xdtics
The same syntax applies to ydtics, zdtics, x2dtics, y2dtics and cbdtics.
See also the set format (p. 66) command.
36.82 Xlabel
The set xlabel command sets the x axis label. Similar commands set labels on the other axes.
Syntax:
set xlabel {""} {}{,} {font "{,}"}
{{textcolor | tc} {lt | default}}
show xlabel
The same syntax applies to x2label, ylabel, y2label, zlabel and cblabel.
Specifying the constants or as optional offsets for a label will move it or
character widths or heights. For example, "set xlabel -1" will change only the x offset of the xlabel,
moving the label roughly one character width to the left. The size of a character depends on both the
font and the terminal.
is used to specify the font in which the label is written; the units of the font depend
upon which terminal is used.
textcolor lt sets the text color to that of line type .
To clear a label, put no options on the command line, e.g., "set y2label".
The default positions of the axis labels are as follows:
xlabel: The x-axis label is centered below the bottom axis.
ylabel: The position of the y-axis label depends on the terminal, and can be one of the following three
positions:
1. Horizontal text flushed left at the top left of the plot. Terminals that cannot rotate text will probably
use this method. If set x2tics is also in use, the ylabel may overwrite the left-most x2tic label. This
may be remedied by adjusting the ylabel position or the left margin.
2. Vertical text centered vertically at the left of the plot. Terminals that can rotate text will probably
use this method.
3. Horizontal text centered vertically at the left of the plot. The EEPIC, LaTeX and TPIC drivers use
this method. The EEPIC driver will produce a stack of characters so as not to overwrite the plot. With
other drivers (such as LaTeX and TPIC), the user probably has to insert line breaks using \\ to prevent
the ylabel from overwriting the plot.
zlabel: The z-axis label is centered along the z axis and placed in the space above the grid level.
cblabel: The color box axis label is centered along the box and placed below or right according to
horizontal or vertical color box gradient.
y2label: The y2-axis label is placed to the right of the y2 axis. The position is terminal-dependent in
the same manner as is the y-axis label.