for [intvar = start:end{:increment}]
for [stringvar in "A B C D"]
例:
plot for [filename in "A.dat B.dat C.dat"] filename using 1:2 with lines
plot for [basename in "A B C"] basename.".dat" using 1:2 with lines
set for [i = 1:10] style line i lc rgb "blue"
unset for [tag = 100:200] label tag
繰り返しの入れ子もサポートしています:
set for [i=1:9] for [j=1:9] label i*10+j sprintf("%d",i*10+j) at i,j
さらなる説明については、以下参照: iteration (p.
), do (p.
)。