Syntax:
plot {<ranges>} {<iteration>} {<function> | {"<datafile>" {datafile-modifiers}}} {axes <axes>} {<title-spec>} {with <style>} {, {definitions{,}} <function> ...}
where either a 4#4function5#5 or the name of a data file enclosed in quotes is
supplied. A function is a mathematical expression or a pair of mathematical
expressions in parametric mode. The expressions may be defined completely or
in part earlier in the stream of gnuplot commands (see user-defined (p. )).
It is also possible to define functions and parameters on the plot command itself. This is done merely by isolating them from other items with commas.
Examples:
plot sin(x) plot sin(x), cos(x) plot f(x) = sin(x*a), a = .2, f(x), a = .4, f(x) plot "datafile.1" with lines, "datafile.2" with points plot [t=1:10] [-pi:pi*2] tan(t), \ "data.1" using (tan($2)):($3/$4) smooth csplines \ axes x1y2 notitle with lines 5 plot for [datafile in "spinach.dat broccoli.dat"] datafile