Groups > comp.graphics.apps.gnuplot > #3489

if else with lines

From	Jörg Buchholz <bookwood4new@freenet.de>
Newsgroups	comp.graphics.apps.gnuplot
Subject	if else with lines
Date	2016-11-28 20:27 +0100
Organization	A noiseless patient Spider
Message-ID	<o1i0ci$t97$1@dont-email.me> (permalink)

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Hello

Sorry, I can't find the starting point for a solution to produce a plot
where the y value dependence from the line before and behind the current
line in a data set.

What I want to do is the following.

If y(n-1) < y(n) and y(n+1) < y(n) than y = y+a
If y(n-1) > y(n) and y(n+1) > y(n) than y = y-a
else y = y

Where n is the number of the line in a data set. "a" is a variable. The
y value is in a column of a data set.

And this in a plot command, so that the y value dependence from the y
value in the line before and after the current line in a data set.

Can somebody gives a kick-off to me? I think/hope that I really need
only a starting point for this problem.

Jörg

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if else with lines Jörg Buchholz <bookwood4new@freenet.de> - 2016-11-28 20:27 +0100
  Re: if else with lines Karl Ratzsch <mail.kfr@gmx.net> - 2016-11-28 21:58 +0100
    Re: if else with lines Jörg Buchholz <bookwood4new@freenet.de> - 2016-11-29 07:31 +0100

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