Groups > comp.graphics.apps.gnuplot > #4004

Re: Samples, isosamples, and how they affect contour lines

Newsgroups	comp.graphics.apps.gnuplot
Date	2018-07-11 22:39 -0700
References	<884eb2ab-a118-41a9-aaa1-bfcdd71f0d0e@googlegroups.com> <pi4igh$v3p$1@solani.org>
Message-ID	<31e8c304-ae02-4814-b3f3-48c06a77dded@googlegroups.com> (permalink)
Subject	Re: Samples, isosamples, and how they affect contour lines
From	nawridlz@gmail.com

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I'm sorry, I still have no idea what's going on here. Consider the following example:

    set samples 6
    set isosamples 500
    set table $surface
    splot x ** 2 + y ** 2
    unset table
    set contour
    set cntrparam levels discrete 80
    set view map
    splot $surface

1. Why is there a smooth curve in the interval [-10, -6]?
2. Why is there a straight line in the interval [-6, -2]?
3. Why are there no points at all in the interval [-2, 2]?

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Samples, isosamples, and how they affect contour lines nawridlz@gmail.com - 2018-07-11 00:02 -0700
  Re: Samples, isosamples, and how they affect contour lines Karl Ratzsch <mail.kfr@gmx.net> - 2018-07-11 11:26 +0200
    Re: Samples, isosamples, and how they affect contour lines nawridlz@gmail.com - 2018-07-11 22:39 -0700
      Re: Samples, isosamples, and how they affect contour lines Karl Ratzsch <mail.kfr@gmx.net> - 2018-07-12 08:08 +0200
        Re: Samples, isosamples, and how they affect contour lines nawridlz@gmail.com - 2018-07-11 23:50 -0700
          Re: Samples, isosamples, and how they affect contour lines Karl Ratzsch <mail.kfr@gmx.net> - 2018-07-12 17:18 +0200
            Re: Samples, isosamples, and how they affect contour lines nawridlz@gmail.com - 2018-07-13 00:22 -0700
              Re: Samples, isosamples, and how they affect contour lines Karl Ratzsch <mail.kfr@gmx.net> - 2018-07-13 12:39 +0200
  Re: Samples, isosamples, and how they affect contour lines Karl Ratzsch <mail.kfr@gmx.net> - 2018-07-13 09:53 +0200

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