gnuplot-info

[Gnuplot-info] Single entry manipulation

[Boon K. T. <ta...@as...>]

Hi Gnuplot authurs,

Is there a way in gnuplot to use a single entry in a certain column  
for math manipulating, for example, multiplying the whole 2nd column  
with the 1st entry of the 1st column?

Cheers,
-Boon-

Re: [Gnuplot-info] Single entry manipulation

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

you need an actual version of gnuplot (>= 4.4)
1st you do a dummy plot (plot nothing) to set a variable
which is then used in the 2nd plot.

plot "datafilename" using 1:(f=$1 , 0/0) every ::0::0 notitle, "" using
1:(f*$2)


Boon Kok Tan wrote:
> 
> Hi Gnuplot authurs,
> 
> Is there a way in gnuplot to use a single entry in a certain column  
> for math manipulating, for example, multiplying the whole 2nd column  
> with the 1st entry of the 1st column?
> 
> Cheers,
> -Boon-
> 
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