Re: multiple plot lines with plot '-'

[Mojca M. <moj...@gm...>]

On Mon, May 14, 2012 at 8:21 AM,  <pl...@pi...> wrote:
> HI,
>
> I am plotting some data from a data file with four columns to produce
> three plot lines.
>
> set timefmt "%d.%m.%y:%H:%M"; set xdata time
> plot  "fast.log" using 1:2 t "systolic" w l,  "fast.log" using 1:3 t
> "diastolic" w l, "fast.log" using 1:4 t "pulse" w l
>
>
> To save having a separate gnuplot script file I was trying to put these
> two lines at the head of the data and use the plot '-' feature. But this
> involves reading the data three times and I can't see how to do it.
>
> Before suggesting ways this could be improved I was wondering whether I
> was missing a trick.

Simply use empty quotation marks:
   plot  "fast.log" using 1:2 t "systolic" w l,  "" using ...

Mojca