Re: [Gnuplot-info] function data extraction

[Thomas S. <t.s...@fz...>]

the proper gnuplot command is:

splot "yourdatafilename" using 1:2:($3+$4*$5)

and plotting if s==0:

splot "yourdatafilename" using 1:2:($6==0 ? $3+$4*$5 : 1/0)


Stijn Souffriau-3 wrote:
> 
> Hi,
> 
> I would like to use gnuplot to plot functions implicitly contained in a
> large 
> data table. However extracting the function tuple values, placing them in 
> columns and specifying the gnuplot plot commands is proving to be very
> tedious 
> work.
> 
> The table is made out of records containing various field. The same fields
> are 
> in the same column. Kind of like in a database. Each column has a symbolic 
> name. The table might then look something like:
>                  x,  y,  f,  g,  u, s, t
> record 1 |  1, 2, 3,  4,  5  0, 3
> record 2 | ...
> ....
> 
> What I would like is a program or language in which I can state something 
> like:
> 
> "plot  x : y : ( f + g * u ) (x,y) ", where f, g and u are functions of
> (x,y). 
> 
> The program should then be able to form the proper gnuplot commands to
> plot 
> this.
> 
> Furthermore it would be nice if I could impose restrictions on the
> function 
> domains like "plot ( f + g * u ) (x,y) WHERE s==0".
> 
> Does anyone know of any software that can do this?
> 
> Thanks for reading
> 
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