[Gnuplot-info] Data file (line manipulation not build?)

[Egidijus S. <egi...@ms...>]

Hello,

In Gnuplot it is simple to manipulate with columns,
but with lines i have more fun:)

I have data file n-th columns and z-th lines (1 block).

Is it possible to write simple command line for ploting all
columns but normed for example to y-th line
(from every line take minus of selected line)?

For example two columns and three lines in each.
Plot two columns but from the first line take minus
with the second then from the second with the second
and from the third with the second line.

Many thanks for help or comments

Egidijus