Use a single record of a file with multiple columns in gnuplot -


let's have following data stored in file 'file' (exciting!):

a_0 a_1 a_2 a_3 b_0 b_1 b_2 b_3 ...

and given function f. want draw several plots, 1 after other, each consisting of single point in (x,y) coordinates : a_2,f(a_2), b_2,f(b_2), etc.

i want use gnuplot-only solution (and think there must one, although can't find !).

i looking :

plot 'file' every ::0::0: using ($2):(f($2)) pause -1 plot 'file' every ::1::1: using ($2):(f($2)) ...

i seem doing complicated... !

the following works fine me. take data file file:

0 1 2 3 4  5 6 7 8 9

and use:

f(x) = x**2 plot 'file' every ::0::0 using 3:(f($3))

that plots me single point @ (2, 4). automatic iteration use e.g.

stats 'file' using 0 nooutput [i=0:int(stats_records-1)] {     plot 'file' every ::i::i using 3:(f($3))     pause -1 }

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