GNUPlot Manual

36 SET-SHOW gnuplot 4.0 143
36.62 Ticscale
The size of the tic marks can be adjusted with set ticscale.
Syntax:
set ticscale { {}}
show tics
If is not specified, it is 0.5*. The default size is 1.0 for major tics and 0.5 for minor
tics. Note that it is possible to have the tic marks pointing outward by specifying a negative size.
36.63 Timestamp
The command set timestamp places the time and date of the plot in the left margin.
Syntax:
set timestamp {""} {top|bottom} {{no}rotate}
{}{,} {""}
unset timestamp
show timestamp
The format string allows you to choose the format used to write the date and time. Its default value is
what asctime() uses: "%a %b %d %H:%M:%S %Y" (weekday, month name, day of the month, hours,
minutes, seconds, four-digit year). With top or bottom you can place the timestamp at the top or
bottom of the left margin (default: bottom). rotate lets you write the timestamp vertically, if your
terminal supports vertical text. The constants and are offsets from the default position
given in character screen coordinates. is used to specify the font with which the time is to be
written.
The abbreviation time may be used in place of timestamp.
Example:
set timestamp "%d/%m/%y %H:%M" 80,-2 "Helvetica"
See set timefmt (p. 143) for more information about time format strings.
36.64 Timefmt
This command applies to timeseries where data are composed of dates/times. It has no meaning unless
the command set xdata time is given also.
Syntax:
set timefmt ""
show timefmt
The string argument tells gnuplot how to read timedata from the datafile. The valid formats are:
Time Series timedata Format Specifiers
Format Explanation
%d day of the month, 1–31
%m month of the year, 1–12
%y year, 0–99
%Y year, 4-digit
%j day of the year, 1–365
%H hour, 0–24
%M minute, 0–60
%s seconds since the Unix epoch (1970-01-01 00:00 UTC)
%S second, 0–60
%b three-character abbreviation of the name of the month
%B name of the month