The QtiPlot Handbook
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User defined fit models

Using the Fit Wizard it is possible to define your own fit model. This example shows the results of a non-linear fit using a custom modified Gauss function with the offset term y0 set to zero.

Figure 6-11. The results of a non-linear fit using a custom Gauss function: y(x) = A*exp(-(x-xc)^2/(2*w^2)).

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