Groups > comp.graphics.apps.gnuplot > #3647

Re: placing expressions in "using" fails

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From	Hans-Bernhard Bröker <HBBroeker@t-online.de>
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Subject	Re: placing expressions in "using" fails
Date	Fri, 19 May 2017 20:48:44 +0200
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Am 19.05.2017 um 19:09 schrieb Fritz Sonnichsen:

> However when I use this construct I get and "invalid expression" condition and the field "$17" appears to be empty (it is not).

That's because the $1, $2 ... short-hand notation only reaches up to $9. 
  For higher column numbers you should really use the long-hand syntax 
column(<n>).

> The gnuplot doc I am referring to is: http://gnuplot.sourceforge.net/docs_4.2/node133.html

That's the documentation of a version of gnuplot that's between 8 and 10 
_years_ old now, or to put it differently, it's about 20 releases out of 
date.  If you're not using an equally ancient version of gnuplot itself, 
you should not be using this edition of the documentation; and if you 
are, you should seriously consider updating.

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placing expressions in "using" fails Fritz Sonnichsen <sonnichs@gmail.com> - 2017-05-19 10:09 -0700
  Re: placing expressions in "using" fails Hans-Bernhard Bröker <HBBroeker@t-online.de> - 2017-05-19 20:48 +0200
  Re: placing expressions in "using" fails Fritz Sonnichsen <sonnichs@gmail.com> - 2017-05-19 13:31 -0700

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