gnuplot documentation

102 gnuplot 4.3 70 SET-SHOW
set format y "%+-12.3f"; set ytics(12345) # "+12345.000 "
set format y "%.2t*10^%+03T"; set ytic(12345)# "1.23*10^+04"
set format y "%s*10^{%S}"; set ytic(12345) # "12.345*10^{3}"
set format y "%s %cg"; set ytic(12345) # "12.345 kg"
set format y "%.0P pi"; set ytic(6.283185) # "2 pi"
set format y "%.0f%%"; set ytic(50) # "50%"
set log y 2; set format y ’%l’; set ytics (1,2,3)
#displays "1.0", "1.0" and "1.5" (since 3 is 1.5 * 2^1)
There are some problem cases that arise when numbers like 9.999 are printed with a format that requires
both rounding and a power.
If the data type for the axis is time/date, the format string must contain valid codes for the ’strftime’
function (outside of gnuplot, type "man strftime"). See set timefmt (p. 137) for a list of the allowed
input format codes.
70.21.3 Time/date specifiers
In time/date mode, the acceptable formats are:
Tic-mark label Date/Time Format Specifiers
Format Explanation
%a abbreviated name of day of the week
%A full name of day of the week
%b or %h abbreviated name of the month
%B full name of the month
%d day of the month, 1–31
%D shorthand for "%m/%d/%y" (only output)
%F shorthand for "%Y-%m-%d" (only output)
%k hour, 0–23 (one or two digits)
%H hour, 00–23 (always two digits)
%l hour, 1–12 (one or two digits)
%I hour, 01–12 (always two digits)
%j day of the year, 1–366
%m month, 1–12
%M minute, 0–60
%p ”am” or ”pm”
%r shorthand for "%I:%M:%S %p" (only output)
%R shorthand for %H:%M" (only output)
%S second, 0–60
%T shorthand for "%H:%M:%S" (only output)
%U week of the year (week starts on Sunday)
%w day of the week, 0–6 (Sunday = 0)
%W week of the year (week starts on Monday)
%y year, 0-99
%Y year, 4-digit
Except for the non-numerical formats, these may be preceded by a "0" ("zero", not "oh") to pad the
field length with leading zeroes, and a positive digit, to define the minimum field width (which will be
overridden if the specified width is not large enough to contain the number). There is a 24-character
limit to the length of the printed text; longer strings will be truncated.
Examples:
Suppose the text is "76/12/25 23:11:11". Then
set format x # defaults to "12/25/76" \n "23:11"
set format x "%A, %d %b %Y" # "Saturday, 25 Dec 1976"
set format x "%r %D" # "11:11:11 pm 12/25/76"