Re: multiple plot lines with plot '-'

[<pl...@pi...>]

On 05/14/12 09:51, 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 ...
>
> Mojca
>

Thanks but I think you missed the point .

The line I posted was using the datafile as data , that could be made 
more concise by using the empty quotes syntax.

My problem is to use the inline data format with  plot "-"  followed by 
the data then the termination line 'e' .

This does not work using the empty bracket syntax because it does not 
reread the data lines that follow. Only the first line gets plotted , 
the rest throw an error about "skipping line with no data".

Thx.