Re: [Gnuplot-info] Label value from file and caption under the graph

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

with version >=4.2 a textstring can be read from a file using commands
your operating system provides, have a look at the 1st and 2nd example in:

http://gnuplot.sourceforge.net/demo/stringvar.html


Alice5785 wrote:
> 
> Hi!
> I searched for a possibilty to plot textstrings from a file (e.g. the
> slope out of fit.log) in gnuplot as a label and so I got this answer to a
> similar problem
> Did I get it right, that there is no way to "call" a text string from a
> file and put it in a gnuplot-label?
> 
> 
> 
> Tammo Heeren-2 wrote:
>> 
>>> Hi,
>>> I have a problem with labelling my plots at an arbitrary position (set
>>> label
>>> "... %f" '???filename and column/line???' at ....) using values from a
>>> file.
>> 
>> I don't think that this is possible.
>> You might be able to somehow do it with variables that you set to contain
>> your text. But I 
>> don't know how you would set those variables. I don't think you can set
>> variables using a 
>> datafile (like the plot command). Would be nice though. You could have an
>> external 
>> program write a file 'setvariables.gp' containing:
>> 
>> set <variable> = <text>
>> 
>> and execute 'setvariables.gp' in your script, like:
>> 
>> load setvariables.gp
>> 
>> Then you could use <variable> in your label command instead of the text.
>> That might work.
>> 
>>> Searching in the gnuplot manual did not help unfortunately. A
>>> google-search
>>> did not do the job either. Perhaps I have to use the awk(?) or sed (?)
>>> command? Anyway, as the value I would like to be as label is not the
>>> only
>>> one in the line of my data file, perhaps awk will not work? 
>>> Right now, my data file consists of two columns, from where I am
>>> plotting
>>> all except the last line (with the every command). The interesting
>>> number in
>>> the last line is the one in the second column which should be the label
>>> of
>>> the graph. 
>>> I am pretty new to the unix/gnuplot area. 
>>> That's why the online helping tools/manuals for awk/sed ... are a bit
>>> too
>>> short for me to understand without lots of examples.  
>>> 
>>> Additionally I would like to implement underneith the plot a few lines
>>> of
>>> text from another textfile like a caption, is this possible with
>>> gnuplot? 
>>> Thanks a lot for your help and sorry if I am posting an already answered
>>> question, I could not find any related answer while searching in the
>>> forums
>>> archive.
>>> Cheers
>>> Fusselpelusa
>> 
>> 
>> 
>> 
>> -- 
>> Tammo Heeren, Ph.D
>> mailto: Tam...@ie...
>> 
>> 
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> 
> 

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