llnl / llnl/Curvallis

Gamma Poly fitting function

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#5 0 comments 0 reactions 1 assignee View on GitHub

@paublo96 is already working on this.

Since Dec 19, 2016.

enhancement
Dominant language
Python
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7
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5
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Description

A gamma function is a different kind of function than we have fit with the curve fitter before. A gamma function generally looks a bit like a lopsided bell curve, where the centre of the bell is rho0. Because it's a new kind of curve, there's a couple of issues you'll have to figure out how to solve.

1. Just like other kind of polynomials, order will have to be defined somehow.
2. 2 different fits are used. LP to the left of rho0, HP to the right. So the user may have to pass in a value for rho0. (Or maybe you could just take the highest point as rho0?)
3. LP uses - exponenets, HP positive ones.

You may have to call and discuss this one with Christine.
[gfit.pdf](https://github.com/LLNL/Curvallis/files/661739/gfit.pdf)

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