Groups > comp.graphics.apps.gnuplot > #1581

Applying arithmetic to a computed column

From	Pete Gregory <pgnewsg@bushlitt.org>
Newsgroups	comp.graphics.apps.gnuplot
Subject	Applying arithmetic to a computed column
Date	2013-01-24 09:20 -0500
Organization	A noiseless patient Spider
Message-ID	<kdrg03$6ea$1@dont-email.me> (permalink)

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Salutations

I have a simple script that plots different columns and blocks using the 
looping capabilities in gnuplot4.6 (and many thanks to those who coded 
it up).

in the loop I have
plot 'myfile' using rfchan index dut with lines {etc etc}
where rfchan and dut are for loop variables.

This works perfectly other than I realize now it would be better scaled 
in mA rather than A.   Were I using just column 2 (say), it would be easy

plot '' using ($2*1000) {etc etc}

but (rfchan*1000) will resolve to looking for column  (rfchan*1000).

Is there an easy way to do both the computed column and value multiply ?

TIA
Pete

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Applying arithmetic to a computed column Pete Gregory <pgnewsg@bushlitt.org> - 2013-01-24 09:20 -0500
  Re: Applying arithmetic to a computed column Karl <mail.kfr@gmx.net> - 2013-01-24 17:45 +0100
    Re: Applying arithmetic to a computed column Pete Gregory <pgnewsg@bushlitt.org> - 2013-01-24 14:49 -0500

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