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gaussfit question
- Subject: gaussfit question
- From: "mirko" <mirko.loehmann(at)student.uni-magdeburg.de>
- Date: Fri, 29 Oct 1999 16:08:38 +0200
- Newsgroups: comp.lang.idl-pvwave
- Organization: Otto-von-Guericke-Universitaet Magdeburg
- Xref: news.doit.wisc.edu comp.lang.idl-pvwave:16987
Hi!
I have a 2D dataset representing a surface (intensity plot of x-ray
scattering data)
and i like to fit these data with GAUSS2DFIT() function which does not work.
So I tried to fit one line of the dataset wit GAUSSFIT which does not
work either.
This it is confusing to me because other math computer programs
have no problem with this simple curve.
Is there something I have to consider?
Cheers
Mirko
IDL> y=[52.0,52.7,56.0,60.9,65.40,71.40, 75.20,
80.80,86.1,89.8,88.3,94.8,94.9,100.5,100.1,103.9,105.3,106.2,107.3,
108.2,106.1,105.7,107.8,102.2,
101.3,97.2,92.1,87.4,87.0,82.5,77.4,69.9,67.7, 62.1, 58.9, 53.4,53.8]
IDL> x=findgen(37)
IDL> yfit=gaussfit(x,y,a)
% Compiled module: GAUSSFIT.
% Compiled module: POLY_FIT.
% Compiled module: CURVEFIT.
% Program caused arithmetic error: Floating underflow