CODEWITHSUNDEEP
c#mathmath.net
Mich
Mich

Reputation: 3594

Sigmoid Curve fit in MathNet Numerics

I have a 3rd degree polynomial fit in MathNet and tested that it works

However, the application here is for edge finding, and I need to do an S-curve fit, I cannot find the correct function for this.

Essentially this would be a rotated polynomial fit as shown below, where the start and finish are horizontally asymptotic, not vertically.

The example below shows the Polynomial curve fit I have right now

            double[] xdata = new double[] { 0, 1, 2,3,4,5,6,7,8,9 };
            double[] ydata = new double[] { 0,0,0,1,0,1,0,1,1,1};

            double[] p = Fit.Polynomial(xdata, ydata, 3);

Result looks like the curve below, as you can see the start and end are not horizontal

What curve fit do I need to use in MathNet to get an S shaped or sigmoid result?

enter image description here

Upvotes: 2

Views: 186

Answers (0)

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