Groups > comp.graphics.apps.gnuplot > #2587

fitting points

Newsgroups	comp.graphics.apps.gnuplot
Date	2014-09-21 22:24 -0700
Message-ID	<eb1da355-00d0-4738-b595-8cbac13d9cd5@googlegroups.com> (permalink)
Subject	fitting points
From	mrossgatt@gmail.com

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Given data points in 2D, I want to generate a curve which interpolates these points. The points should generate a closed curve, i.e. for one x-value I have 2 y-coordinates. 

I already tried the function -plot "data.dat" smooth- with different options but always ended in some problems.
Smooth bezier: approximates the data
Smooth splines: interpolates the data and sometimes the resulting curve oscillates. Furthermore the curve cannot be interpolated at once since the data points are sorted by the x-coordinate before fitting. 

Do you have any other suggestions?

Thanks!
Martha

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fitting points mrossgatt@gmail.com - 2014-09-21 22:24 -0700
  Re: fitting points Hans-Bernhard Bröker <HBBroeker@t-online.de> - 2014-09-22 20:07 +0200

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