Re: [Gnuplot-info] Plotting an indefinite number of y columns against a single x column

[Micha W. <mw...@gm...>]

OcelotIIX schrieb:
> Hi, 
> I've got a numerical program which produces a whole heap of data, with a
> single time column, and an intedeterminate number of y value columns. The
> number of y columns is determined by a parsed file, and so I'd like to know
> if there is a way for gnuplot to plot all the y columns against the x
> column, without having to specify explicitly the number of y columns in the
> gnuplot script, or resorting to modifying the gnuplot script depending on
> the program's output.
> Thanks for any suggestions

How about you write a script that determines the number of columns lets 
call it col-count and then do something like

plot for [i=1:`col-count`] 'data.dat' u 1:i

(see help iteration)

col-count could look like: "awk 'END { print NF }' data.dat" or 
something more advanced.

Hope that helps,
Micha