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| Interpolation http://forum.alglib.net/viewtopic.php?f=2&t=71 |
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| Author: | juanraulpj [ Mon Oct 04, 2010 9:52 am ] |
| Post subject: | Interpolation |
I need to do the approach of weighing a few points each. I'll do it in C # with the alglib library. Which function do you suggest? |
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| Author: | Sergey.Bochkanov [ Mon Oct 04, 2010 10:25 am ] |
| Post subject: | Re: Interpolation |
You can use several functions: polynomialfit to do polynomial fitting, spline1dfitcubic or spline1dfithermite to do spline fitting. Is it what you want? |
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| Author: | juanraulpj [ Mon Oct 04, 2010 1:33 pm ] |
| Post subject: | Re: Interpolation |
More or less...but I'd try with this functiones but I didn't get what I want. I need a function that will approximate entry points with weights. In matlab I was using function sp = spap2(knots,k,x,y,w) %SPAP2 Least squares spline approximation. But now I want to improve the approach and implement in C#. Any suggestions?? Thanks. |
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| Author: | Sergey.Bochkanov [ Mon Oct 04, 2010 5:13 pm ] |
| Post subject: | Re: Interpolation |
You can use spline1dfitcubicwc or spline1dfithermitewc for such tasks. WC means Weighted-Constrained, i.e. these functions can solve weighted problems with constraints on function value/derivative. And, of course, you can solve problem with weights but without constraints. |
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