Do you use a fit for purpose program or extensions for programs such as matlab?
The Matlab curve fitting toolbox is quite flexible, and I prefer it to using Origin. Fitting a full M(H,T) dataset is usually not a simple task. Choosing the right model is definitely more important than the software!
I used to use Mathcad, but the Origin for the experimenter, in my opinion, very good choice.
The Matlab curve fitting toolbox is quite flexible, and I prefer it to using Origin. Fitting a full M(H,T) dataset is usually not a simple task. Choosing the right model is definitely more important than the software!
We program the models we want to use. Most of them are not available afaik. Anyway, it's better to know and understand what your model really does. For doing this we use origin's Levenberg-Marquardt - Machine. The more involved models, we implement externally as DLL's, usually written in c (largely, because origin provides a template interface for external fitting routines)
Matlab is not appropriate to draw the curves for M(H, T). To my mind the best choices are Origin and Sigmaplot.
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