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(gnuplot.info)thru

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Enter node , (file) or (file)node

 The `thru` function is provided for backward compatibility.

 Syntax:
       plot 'file' thru f(x)

 It is equivalent to:

       plot 'file' using 1:(f($2))

 While the latter appears more complex, it is much more flexible.  The more
 natural

       plot 'file' thru f(y)

 also works (i.e. you can use y as the dummy variable).

 `thru` is parsed for `splot` (Note: splot ) and  `fit` (Note: fit ) but
 has no effect.