Re: multiple plot lines with plot '-'

[Allin C. <cot...@wf...>]

On Mon, 14 May 2012, Mojca Miklavec wrote:

> 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 ...

This doesn't work in the context plotter specified, namely 
when you replace the data file "fast.log" with inline data in 
the plot file, using "plot '-'".

I too would be interested to know if there's any way to avoid 
repeating the inline data when plotting multiple lines.

Allin Cottrell