polynomial fit with boundary conditions
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DF
el 16 de Feb. de 2012
I would like to make a polynomial fit for a vector, but imposing some boundary conditions: second derivative at the edges is zero. How can this be done?
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John D'Errico
el 16 de Feb. de 2012
Don't!
You are describing what appears to be a spline, but will be a high order polynomial, subject to constraints. This will invariably produce crapola.
Use a spline to do the job of a spline. If you can't write that yourself, then use code from the file exchange that does it for you.
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Bjorn Gustavsson
el 17 de Feb. de 2012
Mathworks spline toolbox has tools for splines of arbitrary order. (I thought John's SLM-tool had too.)
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