[Kst] Curve fit - extrapolation?

[Nicolas Brisset]

Hi Steve,

I'm not sure I understand your question, but I'll try answering it nonetheless... 

Normally the fit will cover the initial data range, regardless of what you've zoomed into.
In your picture, if you want to determine the y value of a visible point, maybe you could turn on the "Highlight Data Points" option in the toolbar.

If you don't have enough data in the original curve, you can also create a new X vector covering the interesting range using the "Create Vector" menu and then use the fit parameters to generate an equation over this whole range.

Best regards,

Nicolas
----- Mail original -----
> De: "Steve Maher" <Stephen.F.Maher at nasa.gov>
> À: kst at kde.org
> Envoyé: Mercredi 4 Février 2015 17:58:43
> Objet: [Kst] Curve fit - extrapolation?
> 
> 
> 
> 
> Hi all,
> 
> 
> I can nicely fit a curve, but I haven't found a way to adjust the X
> range of the fit. In my case I want to determine the X value when
> the fitted line crosses the X axis.
> 
> 
> Any tips are appreciated!
> 
> 
> Thanks,
> 
> 
> Steve
> 
> 
> 
> 
> Inline image 1
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> 
> 
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