gnuplot documentation

70 SET-SHOW gnuplot 4.3 145
set xtics ("low" 0, "medium" 50, "high" 100)
set xtics (1,2,4,8,16,32,64,128,256,512,1024)
set ytics ("bottom" 0, "" 10, "top" 20)
set ytics ("bottom" 0, "" 10 1, "top" 20)
In the second example, all tics are labelled. In the third, only the end tics are labelled. In the fourth,
the unlabeled tic is a minor tic.
Normally if explicit tics are given, they are used instead of auto-generated tics. Conversely if you specify
set xtics auto or the like it will erase any previously specified explicit tics. You can mix explicit and
auto- generated tics by using the keyword add, which must appear before the tic style being added.
Example:
set xtics 0,.5,10
set xtics add ("Pi" 3.14159)
This will automatically generate tic marks every 0.5 along x, but will also add an explicit labeled tic
mark at pi.
However they are specified, tics will only be plotted when in range.
Format (or omission) of the tic labels is controlled by set format, unless the explicit text of a label is
included in the set xtics ("") form.
Minor (unlabelled) tics can be added automatically by the set mxtics command, or at explicit positions
by the set xtics ("" 1, ...) form.
In case of timeseries data, position values must be given as quoted dates or times according to the format
timefmt. If the , , form is used, and must be given according
to timefmt, but must be in seconds. Times will be written out according to the format given
on set format, however.
Examples:
set xdata time
set timefmt "%d/%m"
set format x "%b %d"
set xrange ["01/12":"06/12"]
set xtics "01/12", 172800, "05/12"
set xdata time
set timefmt "%d/%m"
set format x "%b %d"
set xrange ["01/12":"06/12"]
set xtics ("01/12", "" "03/12", "05/12")
Both of these will produce tics "Dec 1", "Dec 3", and "Dec 5", but in the second example the tic at
"Dec 3" will be unlabelled.
70.90 Xyplane
The set xyplane command adjusts the position at which the xy plane is drawn in a 3D plot. The
synonym "set ticslevel" is accepted for backwards compatibility.
Syntax:
set ticslevel
set xyplane
set xyplane at
show xyplane
The form set ticslevel places the xy plane below the range in Z, where the distance from the
xy plane to Zmin is given as a fraction of the total range in z. The default value is 0.5. Negative values
are permitted, but tic labels on the three axes may overlap.