Re: [Gnuplot-info] Access data value in file

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

you may check for the right x-value (here '3') using the
ternary operator:

plot 'datafile' using 1:($1==3?a=$2:0 , 0/0) notitle, '' using 1:($2/a) with
linespoints

the '0' as the 2nd alternative of the ternary operation is only
there to make the ternary expression complete, it has no
deeper meaning.


uli80 wrote:
> 
> Thanks for the quick and helpful answer! 
> 
> Just one more thing: If I need the y value to a certain x value, do I have
> to check the data file and count the number of lines?
> 
> 

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