Version 4.6 of gnuplot introduced command iteration and block-structured
if/else/while/do constructs. See if (p.
), while (p.
), and do (p.
).
Simple iteration is possible inside plot or set commands.
See plot for (p.
). General iteration spanning multiple
commands is possible using a block construct as shown below.
For a related new feature, see the summation (p.
) expression type.
Here is an example using several of these new syntax features:
set multiplot layout 2,2
fourier(k, x) = sin(3./2*k)/k * 2./3*cos(k*x)
do for [power = 0:3] {
TERMS = 10**power
set title sprintf("%g term Fourier series",TERMS)
plot 0.5 + sum [k=1:TERMS] fourier(k,x) notitle
}
unset multiplot
Build Daemon
2017-06-16