[Gnuplot-info] something like plot filename using VarOne:($VarTwo*1.1) possible?

[Jan N. <jnn...@go...>]

Hi all,
i have to plot a lot of datafiles in which the position of the columns
could change. A change of the datafiles is not possible. So VarOne
could be e.g on Pos 1 in one file, then on Pos. 17. So i wrote a
script that writes the Variable Positions in a file like
VarOne=17
VarTwo=12
and load the file at the beginnning. That works fine, but now i have
to change some values by a factor. Something like

plot filename using 1:($2*1.1)

of course works. But it does not work with the User Variables, e.g.

plot filename using VarOne:($VarTwo*1.1)

Does anyone knows a solution?

With best regards

Jan