Re: [Gnuplot-info] read a single value from another datafile

[Hans-Bernhard B. <br...@ph...>]

Peter Bossy wrote:

> I'm not sure if there is a solution for this problem:
> I want to read a single value from another datafile than the plotted 
> file, and store the value in a variable for calculations while 
> plotting.

No way from inside gnuplot, I suspect (well, except maybe some seriously 
ugly hack involving a 'fit' of that data file...).  The usual way would 
be to assume piping capabilities, and let external tools do the job, i.e.:

	myvar = `program_to_extract_value_from -option filename`

Note that those are back-quotes ``, not ordinary '' ones.