Gaussian Fit Assimetric

[Pepe_Puglisi]

I would like to know if somebody developed a VI to do a fit for an assimetric gaussian curve.

Thanks

[mahu]

you can find it in Signal Processing Palette.

Regards

[altenbach]

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@mahu wrote:

you can find it in Signal Processing Palette.

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Please be more helpful. That palette contains a lot of functions, and I am not aware of any that fits data to an asymmetric gaussian curve. Please give the exact name of the function, or even a link to the online help page.

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@Pepe Puglisi wrote:

I would like to know if somebody developed a VI to do a fit for an assimetric gaussian curve.

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 LabVIEW can fit for anything, asssuming you have a mathematical description of the model.

Do you have a specific model in mind, for example:

• fit piecewise, with the left and right parts having a different gaussian width?
• Skew normal distribution?
• log normal distribution?
• Version 2 generalized normal distribution?
• ...

Once you have decided on a mathematical model, use nonlinear curve fit an write an appropriate model VI using the template

What kid of data is this? Can you attach some sample data?

[jallen88]

There are many VI's that ship with LabVIEW that help with Gaussian fitting. Here are the ones I found by searching 'Gaussian' in the Functions Palette:

Fitting:

• Gaussian Peak Fit (Mathematics > Fitting)
• Gaussian Peak Fit Intervals (Mathematics > Fitting > Advanced Curve Fitting)
• Gaussian Peak Fit Coefficients (Mathematics > Fitting > Advanced Curve Fitting)

Signal Processing:

• Gaussian Window (Signal Processing > Windows)
• Gaussian Monopulse (Signal Processing > Signal Generation)
• Gaussian White Noise (Signal Processing > Signal Generation)
• Gaussian Modulated Sine Pattern (Signal Processing > Signal Generation)
• Gaussian White Noise PtByPt (Signal Processing > Point By Point > Signal Generation PtByPt)
• Gaussian White Noise Waveform (Signal Processing > Waveform Generation)

If these do not work for you, can you provide more information on your application?

[Pepe_Puglisi]

Thanks a lot I think I will try to do a log normal distribution and use the General Fit vi. Many thanks for your help

[altenbach]

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@jallen88 wrote:

There are many VI's that ship with LabVIEW that help with Gaussi...

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These all deal with symmetric gaussians and thus don't answer the question...