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I have two really large data files and I need to plot the sum of theses files. Something like 

plot "data1" + "data2" using 1:2

Is there a way I can do this using gnuplot?

I can't join the files by hand because they are really large (500mb)

inno
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  • Hi and welcome to SO! Please read [this](http://stackoverflow.com/help/how-to-ask) post for how to ask better questions, which will help people give you better answers. In particular, add the code of what you've already tried. – Steve Heim Aug 09 '16 at 21:47
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    Without knowing more about your data file, my best guess is `plot "< paste data1 data2" using 1:($2+$4)`, see http://stackoverflow.com/a/20070138/2604213. That assumes that your data files have two columns each with identical values in the first column. – Christoph Aug 09 '16 at 21:54

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