[Gnuplot-info] Fitting

[Patrick D. <pd...@gm...>]

Hello,

I have data with error bars on x and y.
To fit them properly, i.e., by weighting the data, I need to convert
the x error bar in y error bar.
To do this I need to calculate the derivative of the fitting function.
To make it right I need to calculate this derivative at each iteration and 
then to calculate the new error bars.
It possible to do it with gnuplot?

Thank.

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 Patrick DUPRÉ                                 | | email: pd...@gm...
 Laboratoire de Physico-Chimie de l'Atmosphère | |
 Université du Littoral-Côte d'Opale           | |
 Tel.  (33)-(0)3 28 23 76 12                   | | Fax: 03 28 65 82 44
 189A, avenue Maurice Schumann                 | | 59140 Dunkerque, France
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