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Groups > comp.graphics.apps.gnuplot > #314

Re: Wrong fit direction / zrange / unreadable graph file

From Christoph Bersch <usenet@bersch.net>
Newsgroups comp.graphics.apps.gnuplot
Subject Re: Wrong fit direction / zrange / unreadable graph file
Date 2011-05-17 08:46 +0200
Organization GWDG, Goettingen
Message-ID <iqt5js$2lm1$1@gwdu112.gwdg.de> (permalink)
References (1 earlier) <iqqpas$cec$1@gwdu112.gwdg.de> <93c9dhFmvmU1@mid.individual.net> <iqqs4o$fkv$1@gwdu112.gwdg.de> <93cqpmF1a3U1@mid.individual.net> <bd5d7cd3-2f4f-44bb-b52f-2f043ac38b6b@l30g2000vbn.googlegroups.com>

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On 16.05.2011 18:01, Katharina Miwege wrote:
> I have got it. It only works when you estimate the parameters, m and
> n, very well.

Fitting a line to a set of data should not be such a problem. Have you 
tried not to set the initial parameters at all? gnuplot then sets them 
to 1 if they are not defined, yet. This should work well for linear fits 
(like you have it).
If you still experience problem, you can also post your plot file here 
to get help.

Christoph

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Thread

Wrong fit direction / zrange / unreadable graph file Katharina Miwege <k.miwege@googlemail.com> - 2011-05-15 23:59 -0700
  Re: Wrong fit direction / zrange / unreadable graph file Christoph Bersch <usenet@bersch.net> - 2011-05-16 11:04 +0200
    Re: Wrong fit direction / zrange / unreadable graph file Ingo Thies <ingo.thies@gmx.de> - 2011-05-16 11:34 +0200
      Re: Wrong fit direction / zrange / unreadable graph file Christoph Bersch <usenet@bersch.net> - 2011-05-16 11:52 +0200
        Re: Wrong fit direction / zrange / unreadable graph file Richard Owlett <rowlett@pcnetinc.com> - 2011-05-16 06:25 -0500
          Re: Wrong fit direction / zrange / unreadable graph file Christoph Bersch <usenet@bersch.net> - 2011-05-16 14:44 +0200
        Re: Wrong fit direction / zrange / unreadable graph file Ingo Thies <ingo.thies@gmx.de> - 2011-05-16 16:31 +0200
          Re: Wrong fit direction / zrange / unreadable graph file Katharina Miwege <k.miwege@googlemail.com> - 2011-05-16 09:01 -0700
            Re: Wrong fit direction / zrange / unreadable graph file Christoph Bersch <usenet@bersch.net> - 2011-05-17 08:46 +0200
              Re: Wrong fit direction / zrange / unreadable graph file Hans-Bernhard Bröker <HBBroeker@t-online.de> - 2011-05-19 01:34 +0200
          Re: Wrong fit direction / zrange / unreadable graph file Hans-Bernhard Bröker <HBBroeker@t-online.de> - 2011-05-19 01:49 +0200
            Re: Wrong fit direction / zrange / unreadable graph file Ingo Thies <ingo.thies@gmx.de> - 2011-05-19 11:07 +0200
              Re: Wrong fit direction / zrange / unreadable graph file Hans-Bernhard Bröker <HBBroeker@t-online.de> - 2011-05-19 14:02 +0200
      Re: Wrong fit direction / zrange / unreadable graph file Hans-Bernhard Bröker <HBBroeker@t-online.de> - 2011-05-19 01:39 +0200
        Re: Wrong fit direction / zrange / unreadable graph file Ingo Thies <ingo.thies@gmx.de> - 2011-05-19 10:58 +0200

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