Re: Fitting models

[Ben Abbott]

On Dec 14, 2010, at 6:42 AM, Sebastian Roller wrote:

> Hello,
> i'm Sebastian.
> I'm using octave in order to fit many values.
> The values come from an engine-model of my university (hcci-model).
> The person before me, used MATLAB, and my work is now, to do the same with 
> octave.
> In MATLAB is used the fitting function "smoothing spline". But this function 
> is not available
> in octave.
> So my question is, if anybody knows a simiular function in octave and how to 
> use it???
> 
> values:
> 
> x-axes: crank angle
> y-axes: temperature(K) / pressure(bar)
> 
> 
> Thanks Sebastian

If you are referring to the cubic smoothing spline (csaps) that is included in 
Matlab's curvefiting toolbox, Octave Forge has something similar (same?)

        http://octave.sourceforge.net/spline-gcvspl/overview.html

Ben