gnuplot documentation

70 SET-SHOW gnuplot 4.3 103
Suppose the text is "98/07/06 05:04:03". Then
set format x "%1y/%2m/%3d %01H:%02M:%03S" # "98/ 7/ 6 5:04:003"
70.22 Function style
This form of the command is deprecated. Please see set style function (p. 132).
70.23 Functions
The show functions command lists all user-defined functions and their definitions.
Syntax:
show functions
For information about the definition and usage of functions in gnuplot, please see expressions (p. 25).
See also
and
splines as user defined functions (spline.dem)
use of functions and complex variables for airfoils (airfoil.dem).
70.24 Grid
The set grid command allows grid lines to be drawn on the plot.
Syntax:
set grid {{no}{m}xtics} {{no}{m}ytics} {{no}{m}ztics}
{{no}{m}x2tics} {{no}{m}y2tics}
{{no}{m}cbtics}
{polar {}}
{layerdefault | front | back}
{ {linestyle }
| {linetype | lt }
{linewidth | lw }
{ , {linestyle | ls }
| {linetype | lt }
{linewidth | lw } } }
unset grid
show grid
The grid can be enabled and disabled for the major and/or minor tic marks on any axis, and the linetype
and linewidth can be specified for major and minor grid lines, also via a predefined linestyle, as far as
the active terminal driver supports this.
Additionally, a polar grid can be selected for 2D plots — circles are drawn to intersect the selected tics,
and radial lines are drawn at definable intervals. (The interval is given in degrees or radians, depending
on the set angles setting.) Note that a polar grid is no longer automatically generated in polar mode.
The pertinent tics must be enabled before set grid can draw them; gnuplot will quietly ignore instructions
to draw grid lines at non-existent tics, but they will appear if the tics are subsequently enabled.
If no linetype is specified for the minor gridlines, the same linetype as the major gridlines is used. The
default polar angle is 30 degrees.
If front is given, the grid is drawn on top of the graphed data. If back is given, the grid is drawn
underneath the graphed data. Using front will prevent the grid from being obscured by dense data.
The default setup, layerdefault, is equivalent to back for 2d plots. In 3D plots the default is to split
up the grid and the graph box into two layers: one behind, the other in front of the plotted data and
functions. Since hidden3d mode does its own sorting, it ignores all grid drawing order options and