The Perfect Cauchy or Lorentzian Curve fitting in MS Excel | Curve Fittings | Mathematics | Excel

Download Complete Notes at: www.edmerls.com...
Curve fitting is the process of constructing a curve, or mathematical function, that has the best fit to a series of data points.
Fitted curves can be used as an aid for data visualization, to conclude values of a function where no data are available, and to summarize the relationships among two or more variables.
Equation for Cauchy Curve is, Y=\frac { I }{ \left[ 1+{ \left( \frac { x-a }{ \gamma }
ight) }^{ 2 }
ight] } Where I is intensity,
a is Position,
𝜸 is Scale parameter
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[@user-rg6cx4qw3i]

Thanks for this helpful notice. I did not know how to fit data with functions under Excel. That is quite powerful. However the fit does not work when data are un specific ranges (for instance 1E-15). Probably the convergence criterion has to be adapted. An other way is to scale the data.

[@chrisgreening9313]

been ripping my hair out the last three hours trying to fit a Lorentzian in Python and watching your video for

[@njsarn]

An excellent applied Lorentzian example. Thank you much.

[@bobkoshy7869]

Thank you for your help brother.

[@lincolngriffiths5419]

Thanks mate, this taught me heaps. Much apreciated!

[@901help2]

Very neat video! I didn't recognize the Cauchy formulation you used, but otherwise it accomplishes I very nice fitting! Did you derive this from the integral formulation?

[@intermerestingdocumentary5059]

Thank you so much for the video! I have a question, can we also find the uncertainties of the peak points with excel?

[@Ogrodnik95]

Thank you very much for this video

[@sang-dankim9562]

Thank you very much for your video.

[@Edmerls]

You are welcome